411 pages for tasks.

List Events Claude Developer Platform · in the page api/beta/sessions/events/list …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Stream Events Claude Developer Platform · in the page api/beta/sessions/events/stream …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… List Sessions Claude Developer Platform · in the page api/beta/sessions/list …laude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Get Session Claude Developer Platform · in the page api/beta/sessions/retrieve …laude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Threads Claude Developer Platform · in the page api/beta/sessions/threads …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Archive Session Thread Claude Developer Platform · in the page api/beta/sessions/threads/archive …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Events Claude Developer Platform · in the page api/beta/sessions/threads/events …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… List Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/list …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Stream Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/stream …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… List Session Threads Claude Developer Platform · in the page api/beta/sessions/threads/list …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Get Session Thread Claude Developer Platform · in the page api/beta/sessions/threads/retrieve …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Update Session Claude Developer Platform · in the page api/beta/sessions/update …laude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"`… Messages Claude Developer Platform · in the page api/messages …- `"claude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-fable-5-1"` Frontier intelligence f… Batches Claude Developer Platform · in the page api/messages/batches …"claude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-fable-5-1"` Frontie… Create a Message Batch Claude Developer Platform · in the page api/messages/batches/create …"claude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-fable-5-1"` Frontie… Retrieve Message Batch results Claude Developer Platform · in the page api/messages/batches/results …ude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-fable-5-1"`… Count tokens in a Message Claude Developer Platform · in the page api/messages/count_tokens …- `"claude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-fable-5-1"` Frontier intelligence f… Create a Message Claude Developer Platform · in the page api/messages/create …- `"claude-haiku-5-5"` Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-fable-5-1"` Frontier intelligence f… Message Batches API Claude Developer Platform · in the page build-with-claude/batch-processing …ocs/en/api/messages/create) requests. This approach is well-suited to tasks that do not require immediate responses, with most batches finishing in less than 1 hour while reducing costs by 50 percent… sent_count = len(messages sent in the compaction request) Claude Developer Platform · in the page build-with-claude/compaction …tends the effective context length for long-running conversations and tasks by automatically summarizing older context when approaching the context window limit. It also keeps the active context small… compaction-threshold Claude Developer Platform · in the page build-with-claude/compaction-threshold …tends the effective context length for long-running conversations and tasks by automatically summarizing older context when approaching the context window limit. It also keeps the active context small… context-editing Claude Developer Platform · in the page build-with-claude/context-editing …that summary. This allows Claude to continue working on long-running tasks that would otherwise exceed the [context window](https://platform.claude.com/docs/en/build-with-claude/context-windows). ##… context-windows Claude Developer Platform · in the page build-with-claude/context-windows …”) throughout a conversation. This lets the model manage long-running tasks against the space that remains rather than guess how many tokens are left. Context awareness is automatic: there is nothing… effort Claude Developer Platform · in the page build-with-claude/effort …nnet 5.5, Claude Sonnet 5, Claude Sonnet 4.6, and Claude Haiku 5.5. | Tasks requiring the deepest possible reasoning and most thorough analysis | | `xhigh` | Extended capability for… This will automatically use the environment variable VOYAGE_API_KEY. Claude Developer Platform · in the page build-with-claude/embeddings …s embeddings, their applications, and how to use embedding models for tasks such as search, recommendations, and anomaly detection. --- ## Before implementing embeddings When selecting an embeddings… extended-thinking Claude Developer Platform · in the page build-with-claude/extended-thinking …tune the budget: * Match the starting point to the task. For simple tasks, start near the 1,024-token minimum and increase incrementally to find the optimal range for your use case. For complex task… files Claude Developer Platform · in the page build-with-claude/files …mage/gif`, `image/webp` | `image` | Image analysis, visual tasks | | Datasets, others (see [Upload and analyze your own files](https://platform.claude.com/docs/en/agents-and-tools/too… mid-conversation-effort-example Claude Developer Platform · in the page build-with-claude/mid-conversation-effort-example …same time (the PHP port is sequential and ignores it); `MAX_TOTAL_SUBTASKS` caps how many the model may queue in a single Workflow call. Splitting the two lets the model plan a large backlog without… multilingual-support Claude Developer Platform · in the page build-with-claude/multilingual-support …/build-with-claude/multilingual-support description: Claude excels at tasks across multiple languages, maintaining strong cross-lingual performance relative to English. featureMetadata: status: stab… pdf-support Claude Developer Platform · in the page build-with-claude/pdf-support …ude.com/docs/en/build-with-claude/vision#limitations) as other vision tasks. ### Supported platforms and models All [active models](https://platform.claude.com/docs/en/models/overview) support PDF p… preserved-thinking Claude Developer Platform · in the page build-with-claude/preserved-thinking …blocks are dropped on every turn, and output quality might change on tasks where later turns build on earlier reasoning. Use `"drop_block"` as a stopgap while you fix the edit, not as a long-term set… Request 2 caches its request content (not the response) Claude Developer Platform · in the page build-with-claude/prompt-caching …. This significantly reduces processing time and costs for repetitive tasks or prompts with consistent elements. There are two ways to enable prompt caching: * **[Automatic caching](https://platform… claude-prompting-best-practices Claude Developer Platform · in the page build-with-claude/prompt-engineering/claude-prompting-best-practices …1) | Differences from Claude Fable 5: effort levels, finishing long tasks, user-facing progress updates, passing thinking blocks back unchanged, tool-call batching in agent loops, search triggering… prompting-claude-fable-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5 …s capability range. It also performs reliably on more straightforward tasks. Claude Fable 5 has several behavioral differences from Claude Opus 4.8 that might require prompt or scaffolding updates. C… Delivering work Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5-1 …o emit. ## Finish the whole task Claude Fable 5.1 can run very long tasks without much guidance on methodology, especially when the goal is clear. On complex asynchronous workloads, though, nudge it… prompting-claude-haiku-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-haiku-5-5 …`low` is the cheapest and fastest level. Use it for chat, short tool tasks, and simple, high-volume requests. In long agent prompts, the model is more likely to skip a search, stop early, or skip a c… prompting-claude-opus-4-8 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-4-8 …gths in long-horizon agentic work, knowledge work, vision, and memory tasks. It performs well out of the box on existing Claude Opus 4.7 prompts. The following patterns cover the behaviors that most o… prompting-claude-opus-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5 …nd enterprise work, with particular strengths in long-horizon agentic tasks. It performs well out of the box on existing Claude Opus 4.8 prompts. The following patterns cover the behaviors that most o… prompting-claude-opus-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5-5 …PI integrations and chat, progress updates, unattended and multiagent tasks, safeguard refusals, frontend design, complex visual inputs, multiapp workflows, and pasted text in user messages." --- Thi… prompting-claude-sonnet-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5 …ces). Claude Sonnet 5 has particular strengths in coding and agentic tasks. It performs well out of the box on existing Claude Sonnet 4.6 prompts. The patterns in this guide cover the behaviors that… prompting-claude-sonnet-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5-5 …laude-sonnet-5-5#running-without-up-front-thinking) * JSON answers to tasks that need a few steps of working out are wrong or don’t parse: [Reasoning tasks with JSON output](https://platform.claude.co… skills-guide Claude Developer Platform · in the page build-with-claude/skills-guide …Best practices ### When to use multiple Skills Combine Skills when tasks involve multiple document types or domains: **Good use cases:** * Data analysis (Excel) + presentation creation (PowerPoin… task-budgets Claude Developer Platform · in the page build-with-claude/task-budgets …the full agentic loop to help the model self-regulate on long agentic tasks. featureMetadata: status: beta betaHeader: task-budgets-2026-03-13 supportedModels: - claude-fable-5-1 - claud… thinking Claude Developer Platform · in the page build-with-claude/thinking …he final answer. This is why thinking improves performance on complex tasks such as math, coding, analysis, and long-running agentic work, where the quality of the answer depends on intermediate work… thinking-steering-and-cost Claude Developer Platform · in the page build-with-claude/thinking-steering-and-cost …ost requests that benefit from it. Provides deep reasoning on complex tasks. | | `medium` (default on Claude Opus 5.5 and Claude Haiku 5.5) | Claude uses moderate thinking. Might skip thinking for s… token-counting Claude Developer Platform · in the page build-with-claude/token-counting …onse); ``` ```csharp C# using System; using System.Threading.Tasks; using Anthropic; using Anthropic.Models.Messages; AnthropicClient client = new(); var parameters = new MessageCou… vision Claude Developer Platform · in the page build-with-claude/vision …etations, especially for high-stakes use cases. Do not use Claude for tasks requiring perfect precision or sensitive image analysis without human oversight. *** ## FAQ <AccordionGroup> <Accordion… working-with-messages Claude Developer Platform · in the page build-with-claude/working-with-messages …for** | Custom agent loops and fine-grained control | Long-running tasks and asynchronous work | This guide covers common patterns for working with the Messages AP… API usage primer for Claude Claude Developer Platform · in the page claude_api_primer …de-opus-5-5 Step up for the hardest long-running agentic and research tasks, at 2.5x Claude Opus 5.5 pricing: Claude Fable 5.1: claude-fable-5-1 Previous Opus model: Claude Opus 5: claude-opus-5 Smart… apple-foundation-models Claude Developer Platform · in the page cli-sdks-libraries/libraries/apple-foundation-models …fast, private, and available offline, but it is sized for lightweight tasks. Escalate to Claude when you need larger context, frontier reasoning, or server-side tools such as web search and code execu…