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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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prompting-claude-opus-4-8 Claude Developer Platform · title build-with-claude/prompt-engineering/prompting-claude-opus-4-8 claude-opus-4-8 Claude Developer Platform · title release-notes/system-prompts/claude-opus-4-8 model-deprecations Claude Developer Platform · in the page about-claude/model-deprecations …e | N/A | Not sooner than July 24, 2027 | | claude-opus-4-8 | Active | N/A | Not sooner than May 28, 2027 | | claude-opus-4-7… Or, for the model with the same capabilities and no access approval requirement: Claude Developer Platform · in the page about-claude/models/migration-guide …only), and pricing. #### Update your model name ```python model = "claude-opus-4-8" # Before model = "claude-fable-5" # After # Or, for the Project Glasswing model with the same capabilities: mo… model-ids-and-versions Claude Developer Platform · in the page about-claude/models/model-ids-and-versions …onnet-4-6`, `claude-sonnet-5`, `claude-opus-4-6`, `claude-opus-4-7`, `claude-opus-4-8`, and `claude-opus-5` On Amazon Bedrock, the corresponding format is: ```text wrap anthropic.claude-{name}-{majo… claude-api-skill Claude Developer Platform · in the page agents-and-tools/agent-skills/claude-api-skill …tform.claude.com/docs/en/models/opus-5/migration-guide#migrating-from-claude-opus-4-8-to-claude-opus-5)) * **Current model information:** Model IDs, context window sizes, and pricing * **Common pitfal… advisor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/advisor-tool …ent does not). To see the advice text directly in your response, use `claude-opus-4-8` as the advisor model instead, which returns the plaintext `advisor_result` variant. See [Result variants](https:/… browser-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/browser-use-tool …ude-fable-5`, `claude-mythos-5`, `claude-opus-5`, `claude-sonnet-5`, `claude-opus-4-8` - Platforms: Claude API, Google Cloud; not available on Claude Platform on AWS, Amazon Bedrock, Microsoft Foundry… code-execution-tool Claude Developer Platform · in the page agents-and-tools/tool-use/code-execution-tool …e_execution_20260120`, `code_execution_20260521` | | Claude Opus 4.8 (claude-opus-4-8) | `code_execution_20250825`, `code_execution_20260120`, `code_execution_20260521` | | Claude Opus 4.… computer-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/computer-use-tool …ude-fable-5`, `claude-mythos-5`, `claude-opus-5`, `claude-sonnet-5`, `claude-opus-4-8` - Platforms: Claude API, Claude Platform on AWS (beta), Amazon Bedrock (beta), Google Cloud, Microsoft Foundry (b… Process results programmatically Claude Developer Platform · in the page agents-and-tools/tool-use/programmatic-tool-calling …| Claude Opus 5 (claude-opus-5) | | Claude Opus 4.8 (claude-opus-4-8) | | Claude Opus 4.7 (claude-opus-4-7) | | Claude Opus 4.6 (claude-opus-4-6)… server-tools Claude Developer Platform · in the page agents-and-tools/tool-use/server-tools …\ -H "content-type: application/json" \ -d '{ "model": "claude-opus-4-8", "max_tokens": 1024, "messages": [ { "role": "user", "content": "Summariz… tool-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/tool-search-tool …egex_20251119`, `tool_search_tool_bm25_20251119` | | Claude Opus 4.8 (claude-opus-4-8) | `tool_search_tool_regex_20251119`, `tool_search_tool_bm25_20251119` | | Claude Opus 4.7 (claude-op… web-fetch-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-fetch-tool …\ -H "content-type: application/json" \ -d '{ "model": "claude-opus-4-8", "max_tokens": 4096, "messages": [ { "role": "user", "content": "Fetch th… Beta Claude Developer Platform · in the page api/beta …ul intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Agents Claude Developer Platform · in the page api/beta/agents …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Powerful… Archive Agent Claude Developer Platform · in the page api/beta/agents/archive …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Po… Create Agent Claude Developer Platform · in the page api/beta/agents/create …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Powerful… List Agents Claude Developer Platform · in the page api/beta/agents/list …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Po… Get Agent Claude Developer Platform · in the page api/beta/agents/retrieve …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Po… Update Agent Claude Developer Platform · in the page api/beta/agents/update …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Powerful… Versions Claude Developer Platform · in the page api/beta/agents/versions …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Po… List Agent Versions Claude Developer Platform · in the page api/beta/agents/versions/list …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Po… Messages Claude Developer Platform · in the page api/beta/messages …ul intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Batches Claude Developer Platform · in the page api/beta/messages/batches …ntelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus… Create a Message Batch Claude Developer Platform · in the page api/beta/messages/batches/create …ntelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus… Retrieve Message Batch results Claude Developer Platform · in the page api/beta/messages/batches/results …ntelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus… Count tokens in a Message Claude Developer Platform · in the page api/beta/messages/count_tokens …ul intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Create a Message Claude Developer Platform · in the page api/beta/messages/create …ul intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Sessions Claude Developer Platform · in the page api/beta/sessions …werful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Archive Session Claude Developer Platform · in the page api/beta/sessions/archive …werful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Create Session Claude Developer Platform · in the page api/beta/sessions/create …werful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Events Claude Developer Platform · in the page api/beta/sessions/events …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… List Events Claude Developer Platform · in the page api/beta/sessions/events/list …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Stream Events Claude Developer Platform · in the page api/beta/sessions/events/stream …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… List Sessions Claude Developer Platform · in the page api/beta/sessions/list …werful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Get Session Claude Developer Platform · in the page api/beta/sessions/retrieve …werful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Threads Claude Developer Platform · in the page api/beta/sessions/threads …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Archive Session Thread Claude Developer Platform · in the page api/beta/sessions/threads/archive …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Events Claude Developer Platform · in the page api/beta/sessions/threads/events …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… List Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/list …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Stream Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/stream …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… List Session Threads Claude Developer Platform · in the page api/beta/sessions/threads/list …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Get Session Thread Claude Developer Platform · in the page api/beta/sessions/threads/retrieve …rful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Update Session Claude Developer Platform · in the page api/beta/sessions/update …werful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"`… Completions Claude Developer Platform · in the page api/completions …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Powerful intel… Create a Text Completion Claude Developer Platform · in the page api/completions/create …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Powerful intel… errors Claude Developer Platform · in the page api/errors …response = client.messages.with_raw_response.create( model="claude-opus-4-8", max_tokens=1024, messages=[{"role": "user", "content": "Hello, Claude"}], ) print(f"AWS request… Messages Claude Developer Platform · in the page api/messages …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Powerful intel… Batches Claude Developer Platform · in the page api/messages/batches …Powerful intelligence for long-running agents and coding - `"claude-opus-4-8"` Powerful intelligence for long-running agents and coding - `"claude-opus-4-7"` Po…