overview changedrelease-notes/overview
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### September 24, 2026
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1212 For updates to Claude Code, see the [complete CHANGELOG.md](https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md) in the `claude-code` repository.
1313</Tip>
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15### September 24, 2026
16
17* We're resuming billing for refusals that arrive before any output when `stop_details.category` is `"bio"`, `"frontier_llm"`, or `"reasoning_extraction"`, the categories where we measure low volumes of false positives. Mid-stream refusals were already billed. Refusals billed under this change are charged like any other request, at the rates of the model that ran it. Refusals before any output in other categories are still not billed, and fallback credit is unchanged. This change applies on all platforms. See [How refusals are billed](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback#how-refusals-are-billed).
18* The [Compliance API](https://platform.claude.com/docs/en/manage-claude/compliance-api) local session endpoints are out of beta for Claude for Microsoft 365 sessions in Excel, PowerPoint, Word, and Outlook (`product_surface` values beginning with `office_agents`). See [Sessions on users' machines](https://platform.claude.com/docs/en/manage-claude/compliance-sessions#retrieve-local-sessions).
19* The [Compliance API](https://platform.claude.com/docs/en/manage-claude/compliance-api) [Activity Feed](https://platform.claude.com/docs/en/manage-claude/compliance-activity-feed) no longer returns file names, project document names, or artifact titles. The `filename` and `title` fields on file, project document, and artifact activities are now always empty or omitted, including on activities recorded before this change. To look up a name or title by the ID on the activity, use a Compliance Access Key with the `read:compliance_user_data` scope. See [Understand the Activity object](https://platform.claude.com/docs/en/manage-claude/compliance-activity-feed#understand-the-activity-object).
20
1521### September 23, 2026
1622
1723* [Cache diagnostics](https://platform.claude.com/docs/en/build-with-claude/cache-diagnostics) is out of beta on the Claude API and no longer requires the `cache-diagnosis-2026-04-07` beta header. Include the `diagnostics` object on a Messages request to opt in; requests that still send the header work as before. Responses from `POST /v1/messages` now always include the `diagnostics` field, which is `null` when the request did not include the `diagnostics` object.
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5864* `thinking.display` accepts a third value, `"updates"`, in beta (`thinking-display-updates-2026-08-18` header). Reasoning comes back with an empty `thinking` field, as under `"omitted"`, and the short progress updates that Claude Fable 5.1, Claude Mythos 5.1, and Claude Fable 5 write between tool calls come back as text, at most one `thinking` block before a tool call. See [Progress updates between tool calls](https://platform.claude.com/docs/en/build-with-claude/thinking#progress-updates).
5965* Text generated by Claude Fable 5.1 and Claude Mythos 5.1 carries Anthropic's text watermark, and supported image, video, and audio files that Claude produces through the [code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool) carry C2PA Content Credentials when you retrieve them through the [Files API](https://platform.claude.com/docs/en/build-with-claude/files) on the Claude API. Marking requires no changes to your requests or response handling.
6066* Like Claude Fable 5, both models require 30-day data retention and aren't available under zero data retention unless expressly authorized by Anthropic. See [Model-specific data retention requirements](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements).
61* The guides for the Claude Enterprise endpoints of the [Admin API](https://platform.claude.com/docs/en/api/admin) ([user management](https://platform.claude.com/docs/en/manage-claude/user-management) and [spend limits](https://platform.claude.com/docs/en/manage-claude/spend-limits-api)), the [Claude Enterprise Analytics API](https://platform.claude.com/docs/en/manage-claude/analytics-api), and the [Compliance API](https://platform.claude.com/docs/en/manage-claude/compliance-api) now show the `anthropic-version` header; send it on every request to these endpoints, as in the rest of the Claude API. See [API versions](https://platform.claude.com/docs/en/api/versioning).
67* The guides for the Claude Enterprise endpoints of the [Admin API](https://platform.claude.com/docs/en/api/beta/organization) ([user management](https://platform.claude.com/docs/en/manage-claude/user-management) and [spend limits](https://platform.claude.com/docs/en/manage-claude/spend-limits-api)), the [Claude Enterprise Analytics API](https://platform.claude.com/docs/en/manage-claude/analytics-api), and the [Compliance API](https://platform.claude.com/docs/en/manage-claude/compliance-api) now show the `anthropic-version` header; send it on every request to these endpoints, as in the rest of the Claude API. See [API versions](https://platform.claude.com/docs/en/api/versioning).
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6369### August 27, 2026
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8591* Both toolsets are available for Claude Fable 5, Claude Mythos 5, Claude Opus 5, Claude Sonnet 5, and Claude Opus 4.8 on the Claude API.
8692* The [Files API](https://platform.claude.com/docs/en/build-with-claude/files) is out of beta on the Claude API. Requests to the `/v1/files` endpoints, and Messages API requests that reference an uploaded file, no longer require the `files-api-2025-04-14` beta header. Requests sent without the header use the current response format: [file expiration](https://platform.claude.com/docs/en/build-with-claude/files#file-expiration) (set `expires_in_seconds` when you upload a file; file objects report `expires_at`), and `page` and `next_page` [pagination](https://platform.claude.com/docs/en/api/overview#pagination) plus an `ids[]` filter when you [list files](https://platform.claude.com/docs/en/build-with-claude/files#list-files). `/v1/files` requests that still send the beta header keep working and return the previous response format. To move an existing integration off the header, see [Migrate from `files-api-2025-04-14`](https://platform.claude.com/docs/en/build-with-claude/files#migrate-from-files-api-2025-04-14).
8793* [Agent Skills](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview) and the Skills API (`/v1/skills`) are out of beta on the Claude API. Requests no longer require the `skills-2025-10-02` beta header, including Messages API requests that load Skills through the `container` parameter. Requests that still send the header continue to work unchanged. See [Using Agent Skills with the API](https://platform.claude.com/docs/en/build-with-claude/skills-guide). To move an existing integration off the header, see [Migrate from `skills-2025-10-02`](https://platform.claude.com/docs/en/build-with-claude/skills-guide#migrate-from-skills-2025-10-02).
88* The [Admin API](https://platform.claude.com/docs/en/api/admin) user-management endpoints for **Claude Enterprise** (claude.ai) organizations (members, invites, groups, and custom roles) are out of beta. The `anthropic-beta: ce-user-management-2026-07-13` header is no longer required on group and custom-role requests; requests that still send it are accepted unchanged. See [User management](https://platform.claude.com/docs/en/manage-claude/user-management).
94* The [Admin API](https://platform.claude.com/docs/en/api/beta/organization) user-management endpoints for **Claude Enterprise** (claude.ai) organizations (members, invites, groups, and custom roles) are out of beta. The `anthropic-beta: ce-user-management-2026-07-13` header is no longer required on group and custom-role requests; requests that still send it are accepted unchanged. See [User management](https://platform.claude.com/docs/en/manage-claude/user-management).
8995* You can now restrict which sites a Claude Managed Agents agent's `web_search` and `web_fetch` tools can reach. Set `allowed_domains` or `blocked_domains` on the tool's entry in the `agent_toolset_20260401` `configs` array; `web_fetch` also accepts `max_content_tokens` and `web_search` accepts `user_location`. Each `configs` entry is identified by its `name` and typed by an optional `type`, and requests that pass only `name`, `enabled`, and `permission_policy` continue to work; in the typed SDKs, `configs` entries become per-tool types. See [Restrict web search and web fetch domains](https://platform.claude.com/docs/en/managed-agents/tools#restrict-web-search-and-web-fetch-domains).
9096* Claude Managed Agents sessions that run in a [self-hosted sandbox](https://platform.claude.com/docs/en/managed-agents/self-hosted-sandboxes) can now attach [memory stores](https://platform.claude.com/docs/en/managed-agents/memory). The Python, TypeScript, and Go SDK workers download each attached store into the sandbox at its `mount_path` and sync the agent's changes back to the store. See [Use memory stores](https://platform.claude.com/docs/en/managed-agents/self-hosted-sandboxes#use-memory-stores).
9197* The session viewer in the Claude Console has been redesigned with a timeline minimap, a transcript grouped by model request, and an Inspector panel for session details and cost, raw events, per-tool statistics, mounted resources, and per-thread activity. See [Console observability](https://platform.claude.com/docs/en/managed-agents/events-and-streaming#console-observability).
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151157
152158### July 14, 2026
153159
154* You can now manage the people in your **Claude Enterprise** (claude.ai) organization with the [Admin API](https://platform.claude.com/docs/en/api/admin), in beta for all Claude Enterprise organizations: list members and look them up by email address, change a member's role, remove members, send and withdraw invites, manage groups and their membership, and read custom roles. Group and custom-role requests require the `anthropic-beta: ce-user-management-2026-07-13` beta header; member and invite requests take no beta header. An Admin API key with the `read:org_audit` scope can also call every user-management `GET` endpoint. See [User management](https://platform.claude.com/docs/en/manage-claude/user-management).
160* You can now manage the people in your **Claude Enterprise** (claude.ai) organization with the [Admin API](https://platform.claude.com/docs/en/api/beta/organization), in beta for all Claude Enterprise organizations: list members and look them up by email address, change a member's role, remove members, send and withdraw invites, manage groups and their membership, and read custom roles. Group and custom-role requests require the `anthropic-beta: ce-user-management-2026-07-13` beta header; member and invite requests take no beta header. An Admin API key with the `read:org_audit` scope can also call every user-management `GET` endpoint. See [User management](https://platform.claude.com/docs/en/manage-claude/user-management).
155161
156162### July 10, 2026
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161167### July 8, 2026
162168
163* You can now set an expiration when you create an API key or an Admin API key in the [Claude Console](https://platform.claude.com/settings/keys). Choose a preset, a custom duration, or **Never**. For keys with a lifetime of at least 7 days, Anthropic emails the creator before expiration. Existing keys are unaffected. The Admin API reports each key's expiration in the [`expires_at`](https://platform.claude.com/docs/en/api/admin/api_keys/list) field. See [Authentication](https://platform.claude.com/docs/en/manage-claude/authentication#key-expiration).
169* You can now set an expiration when you create an API key or an Admin API key in the [Claude Console](https://platform.claude.com/settings/keys). Choose a preset, a custom duration, or **Never**. For keys with a lifetime of at least 7 days, Anthropic emails the creator before expiration. Existing keys are unaffected. The Admin API reports each key's expiration in the [`expires_at`](https://platform.claude.com/docs/en/api/beta/organization/api_keys/list) field. See [Authentication](https://platform.claude.com/docs/en/manage-claude/authentication#key-expiration).
164170
165171### July 2, 2026
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215221
216222### June 9, 2026
217223
218* We've launched **Claude Fable 5** (`claude-fable-5`), our most capable widely released model, alongside **Claude Mythos 5** (`claude-mythos-5`) for Project Glasswing participants. Both models support a [1M token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) by default, 128k max output tokens, and always-on [adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/thinking). See [Introducing Claude Fable 5 and Claude Mythos 5](https://platform.claude.com/docs/en/models/fable-5/introducing-claude-fable-5-and-claude-mythos-5) for capabilities, API changes, and availability.
224* We've launched **Claude Fable 5** (`claude-fable-5`), our most capable model open to all customers, alongside **Claude Mythos 5** (`claude-mythos-5`) for Project Glasswing participants. Both models support a [1M token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) by default, 128k max output tokens, and always-on [adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/thinking). See [Introducing Claude Fable 5 and Claude Mythos 5](https://platform.claude.com/docs/en/models/fable-5/introducing-claude-fable-5-and-claude-mythos-5) for capabilities, API changes, and availability.
219225* Claude Fable 5 and Claude Mythos 5 use the tokenizer introduced with Claude Opus 4.7. Compared to models before Claude Opus 4.7, the same text produces roughly 30% more tokens. The exact increase depends on the content and workload shape. Use the [token counting API](https://platform.claude.com/docs/en/build-with-claude/token-counting#token-counts-on-claude-fable-5) with `model: "claude-fable-5"` to measure your prompts under the new tokenizer.
220226* Claude Fable 5 runs safety classifiers on requests and during response generation. When a classifier declines a request, the Messages API returns `stop_reason: "refusal"`. You are not billed for a request refused before any output is generated. An opt-in `fallbacks` parameter (in beta on the Claude API and Claude Platform on AWS; not supported on the Message Batches API) re-runs refused requests on another model, billed at the fallback model's rates. See [Handling stop reasons](https://platform.claude.com/docs/en/build-with-claude/handling-stop-reasons).
221227* The [`stop_details.category`](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback#refusal-response) field on refusal responses now includes `"reasoning_extraction"` on Claude Fable 5, returned when a request is blocked under Anthropic's Terms of Service restrictions on reverse engineering or duplicating model outputs. The existing `"cyber"` and `"bio"` categories are unchanged. No beta header is required.
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243249
244250### May 28, 2026
245251
246* We've launched **Claude Opus 4.8** (claude-opus-4-8), our most capable widely released model. Claude Opus 4.8 supports a [1M token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) by default on the Claude API, Amazon Bedrock, Google Cloud, and Microsoft Foundry, 128k max output tokens, and the same set of tools and platform features as Claude Opus 4.7. See the [migration guide](https://platform.claude.com/docs/en/about-claude/models/migration-guide) for baseline settings, features, and migration guidance.
252* We've launched **Claude Opus 4.8** (claude-opus-4-8), our most capable model. Claude Opus 4.8 supports a [1M token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) by default on the Claude API, Amazon Bedrock, Google Cloud, and Microsoft Foundry, 128k max output tokens, and the same set of tools and platform features as Claude Opus 4.7. See the [migration guide](https://platform.claude.com/docs/en/about-claude/models/migration-guide) for baseline settings, features, and migration guidance.
247253* We've launched [mid-conversation system messages](https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages). On Claude Opus 4.8, you can send `role: "system"` messages after a user turn (subject to [placement rules](https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages#limitations)) in the `messages` array, preserving prompt cache hits when instructions change during a long-running session. No beta header is required.
248254* The [`stop_details`](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback#refusal-response) field on refusal responses is now publicly documented; it returns a `category` (`cyber`, `bio`, or `null`) and a human-readable `explanation`, so your application can route different classes of refusal to the right next step. No beta header is required.
249255* On Claude Opus 4.8, the [effort parameter](https://platform.claude.com/docs/en/build-with-claude/effort) defaults to `high` across all surfaces, including Claude Code and the Messages API.
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323329### April 16, 2026
324330
325* We've launched [Claude Opus 4.7](https://www.anthropic.com/news/claude-opus-4-7), our most capable widely released model for complex reasoning and agentic coding, at the same $5 / $25 per MTok pricing as Opus 4.6. See [What's new in Claude Opus 4.7](https://platform.claude.com/docs/en/about-claude/models/whats-new-claude-4-7) for capability improvements, new features, and the updated tokenizer. Opus 4.7 includes API breaking changes versus Opus 4.6; see the [migration guide](https://platform.claude.com/docs/en/about-claude/models/migration-guide) before upgrading.
331* We've launched [Claude Opus 4.7](https://www.anthropic.com/news/claude-opus-4-7), our most capable model for complex reasoning and agentic coding, at the same $5 / $25 per MTok pricing as Opus 4.6. See [What's new in Claude Opus 4.7](https://platform.claude.com/docs/en/about-claude/models/whats-new-claude-4-7) for capability improvements, new features, and the updated tokenizer. Opus 4.7 includes API breaking changes versus Opus 4.6; see the [migration guide](https://platform.claude.com/docs/en/about-claude/models/migration-guide) before upgrading.
326332* [Claude in Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock) is now open to all Amazon Bedrock customers. Claude Opus 4.7 and Claude Haiku 4.5 are available self-serve from the Bedrock console through the Messages API endpoint at `/anthropic/v1/messages`, in 27 AWS regions with global and regional endpoints.
327333* We've launched [task budgets](https://platform.claude.com/docs/en/build-with-claude/task-budgets) in beta on Claude Opus 4.7. Give Claude an advisory token budget for a full agentic loop (thinking, tool calls, tool results, and output) and the model sees a running countdown, using it to prioritize work and finish gracefully as the budget is consumed. Include the `task-budgets-2026-03-13` beta header in your requests.
328334* Claude Opus 4.7 supports [high-resolution image input](https://platform.claude.com/docs/en/build-with-claude/vision#high-resolution-image-support-on-claude-opus-4-7), raising the maximum image resolution from 1568 to 2576 pixels on the long edge for improved performance on computer use, screenshot understanding, and document analysis. High-resolution support is automatic and requires no beta header; images may use up to approximately 3x more image tokens than on prior models.
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373379
374380### February 17, 2026
375381
376* We've launched [Claude Sonnet 4.6](https://www.anthropic.com/news/claude-sonnet-4-6), our latest balanced model combining speed and intelligence for everyday tasks. Sonnet 4.6 delivers improved agentic search performance while consuming fewer tokens. Sonnet 4.6 supports [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking) and a [1M token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) (beta). See [Models & Pricing](https://platform.claude.com/docs/en/about-claude/models) for details.
382* We've launched [Claude Sonnet 4.6](https://www.anthropic.com/news/claude-sonnet-4-6), our latest balanced model combining speed and intelligence for everyday tasks. Sonnet 4.6 delivers improved agentic search performance while consuming fewer tokens. Sonnet 4.6 supports [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking) and a [1M token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) (beta). See [Models & Pricing](https://platform.claude.com/docs/en/models/overview) for details.
377383* API [code execution](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool) is now **free when used with web search or web fetch**. Sandboxed code execution improves model capability and token efficiency. See the [pricing details](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool#usage-and-pricing) for standalone usage.
378384* The [web search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool) and [programmatic tool calling](https://platform.claude.com/docs/en/agents-and-tools/tool-use/programmatic-tool-calling) are available with no beta header required. Web search and web fetch now support [dynamic filtering](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool#dynamic-filtering), which uses code execution to filter results before they reach the context window for better performance and reduced token cost.
379385* The [code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool), [web fetch tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-fetch-tool), [tool search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-search-tool), [tool use examples](https://platform.claude.com/docs/en/agents-and-tools/tool-use/define-tools#providing-tool-use-examples), and [memory tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/memory-tool) no longer require a beta header.
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413419
414420### November 24, 2025
415421
416* We've launched [Claude Opus 4.5](https://www.anthropic.com/news/claude-opus-4-5), our most intelligent model combining maximum capability with practical performance. Ideal for complex specialized tasks, professional software engineering, and advanced agents. Features step-change improvements in vision, coding, and computer use at a more accessible price point than previous Opus models. Learn more in [Models overview](https://platform.claude.com/docs/en/about-claude/models).
422* We've launched [Claude Opus 4.5](https://www.anthropic.com/news/claude-opus-4-5), our most intelligent model combining maximum capability with practical performance. Ideal for complex specialized tasks, professional software engineering, and advanced agents. Features step-change improvements in vision, coding, and computer use at a more accessible price point than previous Opus models. Learn more in [Models overview](https://platform.claude.com/docs/en/models/overview).
417423* We've launched [programmatic tool calling](https://platform.claude.com/docs/en/agents-and-tools/tool-use/programmatic-tool-calling) in public beta, allowing Claude to call tools from within code execution to reduce latency and token usage in multi-tool workflows.
418424* We've launched the [tool search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-search-tool) in public beta, enabling Claude to dynamically discover and load tools on-demand from large tool catalogs.
419425* We've launched the [effort parameter](https://platform.claude.com/docs/en/build-with-claude/effort) in public beta for Claude Opus 4.5, allowing you to control token usage by trading off between response thoroughness and efficiency.
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452458
453459### October 15, 2025
454460
455* We've launched [Claude Haiku 4.5](https://www.anthropic.com/news/claude-haiku-4-5), our fastest and most intelligent Haiku model with near-frontier performance. Ideal for real-time applications, high-volume processing, and cost-sensitive deployments requiring strong reasoning. Learn more in [Models overview](https://platform.claude.com/docs/en/about-claude/models).
461* We've launched [Claude Haiku 4.5](https://www.anthropic.com/news/claude-haiku-4-5), our fastest and most intelligent Haiku model with near-frontier performance. Ideal for real-time applications, high-volume processing, and cost-sensitive deployments requiring strong reasoning. Learn more in [Models overview](https://platform.claude.com/docs/en/models/overview).
456462
457463### September 29, 2025
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512518### August 18, 2025
513519
514520* We've released the [Usage & Cost API](https://platform.claude.com/docs/en/manage-claude/usage-cost-api), allowing administrators to programmatically monitor their organization's usage and cost data.
515* We've added a new endpoint to the Admin API for retrieving organization information. For details, see the [Organization Info Admin API reference](https://platform.claude.com/docs/en/api/admin-api/organization/get-me).
521* We've added a new endpoint to the Admin API for retrieving organization information. For details, see the [Organization Info Admin API reference](https://platform.claude.com/docs/en/api/beta/organization/retrieve).
516522
517523### August 13, 2025
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533539
534540### August 5, 2025
535541
536* We've launched [Claude Opus 4.1](https://www.anthropic.com/news/claude-opus-4-1), an incremental update to Claude Opus 4 with enhanced capabilities and performance improvements.\* Learn more in [Models overview](https://platform.claude.com/docs/en/about-claude/models).
542* We've launched [Claude Opus 4.1](https://www.anthropic.com/news/claude-opus-4-1), an incremental update to Claude Opus 4 with enhanced capabilities and performance improvements.\* Learn more in [Models overview](https://platform.claude.com/docs/en/models/overview).
537543
538544*\*Opus 4.1 does not allow both `temperature` and `top_p` parameters to be specified. Please use only one.*
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571577
572578### May 22, 2025
573579
574* We've launched [Claude Opus 4 and Claude Sonnet 4](https://www.anthropic.com/news/claude-4), our latest models with extended thinking capabilities. Learn more in [Models overview](https://platform.claude.com/docs/en/about-claude/models).
580* We've launched [Claude Opus 4 and Claude Sonnet 4](https://www.anthropic.com/news/claude-4), our latest models with extended thinking capabilities. Learn more in [Models overview](https://platform.claude.com/docs/en/models/overview).
575581* The default behavior of [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking) in Claude 4 models returns a summary of Claude's full thinking process, with the full thinking encrypted and returned in the `signature` field of `thinking` block output.
576582* We've launched [interleaved thinking](https://platform.claude.com/docs/en/build-with-claude/thinking#interleaved-thinking) in public beta, a feature that enables Claude to think in between tool calls. To enable interleaved thinking, use the [beta header](https://platform.claude.com/docs/en/api/beta-headers) `interleaved-thinking-2025-05-14`.
577583* We've launched the [Files API](https://platform.claude.com/docs/en/build-with-claude/files) in public beta, enabling you to upload files and reference them in the Messages API and code execution tool.
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611617### February 24th, 2025
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613* We've launched [Claude Sonnet 3.7](https://www.anthropic.com/news/claude-3-7-sonnet), our most intelligent model yet. Claude Sonnet 3.7 can produce near-instant responses or show its extended thinking step-by-step. One model, two ways to think. Learn more about all Claude models in [Models overview](https://platform.claude.com/docs/en/about-claude/models).
619* We've launched [Claude Sonnet 3.7](https://www.anthropic.com/news/claude-3-7-sonnet), our most intelligent model yet. Claude Sonnet 3.7 can produce near-instant responses or show its extended thinking step-by-step. One model, two ways to think. Learn more about all Claude models in [Models overview](https://platform.claude.com/docs/en/models/overview).
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615621* We've added vision support to Claude Haiku 3.5, enabling the model to analyze and understand images.
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652658
653659### December 19th, 2024
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655* We've added support for a [delete endpoint](https://platform.claude.com/docs/en/api/deleting-message-batches) in the Message Batches API.
661* We've added support for a [delete endpoint](https://platform.claude.com/docs/en/api/messages/batches/delete) in the Message Batches API.
656662
657663### December 17th, 2024
658664
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