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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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50 pages for opus.

Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it. Cut at 50, so a narrower query shows the rest.

prompting-claude-opus-4-8 Claude Developer Platform · title build-with-claude/prompt-engineering/prompting-claude-opus-4-8 prompting-claude-opus-5 Claude Developer Platform · title build-with-claude/prompt-engineering/prompting-claude-opus-5 Opus migration Claude Developer Platform · title models/opus-5/migration-guide whats-new-opus-5 Claude Developer Platform · title models/opus-5/whats-new-opus-5 claude-opus-3 Claude Developer Platform · title release-notes/system-prompts/claude-opus-3 claude-opus-4 Claude Developer Platform · title release-notes/system-prompts/claude-opus-4 claude-opus-4-1 Claude Developer Platform · title release-notes/system-prompts/claude-opus-4-1 claude-opus-4-5 Claude Developer Platform · title release-notes/system-prompts/claude-opus-4-5 claude-opus-4-6 Claude Developer Platform · title release-notes/system-prompts/claude-opus-4-6 claude-opus-4-7 Claude Developer Platform · title release-notes/system-prompts/claude-opus-4-7 claude-opus-4-8 Claude Developer Platform · title release-notes/system-prompts/claude-opus-4-8 claude-opus-5 Claude Developer Platform · title release-notes/system-prompts/claude-opus-5 overview Claude Developer Platform · path models/opus-4-5/overview overview Claude Developer Platform · path models/opus-4-6/overview overview Claude Developer Platform · path models/opus-4-7/overview overview Claude Developer Platform · path models/opus-4-8/overview overview Claude Developer Platform · path models/opus-5/overview model-deprecations Claude Developer Platform · in the page about-claude/model-deprecations …h-claude/claude-in-amazon-bedrock#supported-models), [Amazon Bedrock (Opus 4.6 and earlier)](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy#api-model-ids), and [… choosing-a-model Claude Developer Platform · in the page about-claude/models/choosing-a-model …ow quickly does the model need to respond in your application? Claude Opus 5 and Claude Opus 4.8 support [fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode) (research preview)… Or, for the model with the same capabilities and no access approval requirement: Claude Developer Platform · in the page about-claude/models/migration-guide …is page: ```text wrap /claude-api migrate this project to claude-opus-5 ``` The skill applies the model ID swap and, as needed, breaking parameter changes, prefill replacement, and effort ca… model-ids-and-versions Claude Developer Platform · in the page about-claude/models/model-ids-and-versions …inor}] ``` Major-version releases such as Claude Sonnet 5 and Claude Opus 5 omit the minor segment. For example: `claude-sonnet-4-6`, `claude-sonnet-5`, `claude-opus-4-6`, `claude-opus-4-7`, `claude… optimizing-for-cost-and-intelligence Claude Developer Platform · in the page about-claude/models/optimizing-for-cost-and-intelligence …ess than the 1-hour setting on Claude Sonnet 5 and 11% less on Claude Opus 5. * Gaps over an hour are common: stay on the default. A gap over an hour expires both durations, and the 1-hour setting the… pricing Claude Developer Platform · in the page about-claude/pricing …| $20 / MTok | $1 / MTok | $50 / MTok | | Claude Opus 5 | $… content-moderation Claude Developer Platform · in the page about-claude/use-case-guides/content-moderation …,500 USD * Monthly cost: $28,600 + $7,500 = $36,100 USD * **Claude Opus 5 estimated cost** * Input token cost: 28,600 MTok \* $5.00/MTok = $143,000 USD * Output token cost: 1,500 MTok \* $25.0… customer-support-chat Claude Developer Platform · in the page about-claude/use-case-guides/customer-support-chat …cost, accuracy, and response time. For customer support chat, Claude Opus 5 is well suited to balance intelligence, latency, and cost, including the most complex support scenarios that require deep r… Create the full URL from the GitHub repository Claude Developer Platform · in the page about-claude/use-case-guides/legal-summarization …uracy is extremely important when summarizing legal documents. Claude Opus 5 is an excellent choice for use cases such as this where high accuracy is required. If the size and quantity of your documen… PDF Processing Claude Developer Platform · in the page agents-and-tools/agent-skills/best-practices …ude Sonnet** (balanced): Is the Skill clear and efficient? * **Claude Opus** (powerful reasoning): Does the Skill avoid over-explaining? What works perfectly for Opus might need more detail for Haiku… claude-api-skill Claude Developer Platform · in the page agents-and-tools/agent-skills/claude-api-skill …models (including the breaking changes and behavior shifts on [Claude Opus 5](https://platform.claude.com/docs/en/models/opus-5/migration-guide#migrating-from-claude-opus-4-8-to-claude-opus-5)) * **Cu… enterprise Claude Developer Platform · in the page agents-and-tools/agent-skills/enterprise …uire testing across the models your organization uses (Haiku, Sonnet, Opus), because Skill effectiveness varies by model. For detailed guidance on building evaluations, see [evaluation and iteration]… quickstart Claude Developer Platform · in the page agents-and-tools/agent-skills/quickstart …c-version: 2023-06-01" \ -d @- <<'EOF' { "model": "claude-opus-5", "max_tokens": 16000, "container": { "skills": [{"type": "anthropic", "skill_id": "pptx", "version": "latest… mcp-connector Claude Developer Platform · in the page agents-and-tools/mcp-connector …ropic-beta: mcp-client-2025-11-20" \ -d '{ "model": "claude-opus-5", "max_tokens": 1000, "messages": [{"role": "user", "content": "What tools do you have available?"}], "mc… overview Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/overview …ropic-beta: mcp-client-2025-11-20" \ -d '{ "model": "claude-opus-5", "max_tokens": 1000, "messages": [{"role": "user", "content": "Use the hello tool to greet tunnel."}], "… advisor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/advisor-tool …u currently use Sonnet on complex tasks:** Add a higher-tier advisor. Opus keeps total cost similar or lower; Claude Fable 5 maximizes the quality lift. * **You currently use Haiku and want a step up… bash-tool Claude Developer Platform · in the page agents-and-tools/tool-use/bash-tool …-H "anthropic-version: 2023-06-01" \ -d '{ "model": "claude-opus-5", "max_tokens": 1024, "tools": [ { "type": "bash_20250124", "name": "bash"… browser-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/browser-use-tool …ts)) - Supported models: `claude-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, Amaz… build-a-tool-using-agent Claude Developer Platform · in the page agents-and-tools/tool-use/build-a-tool-using-agent …OOLS" \ --arg msg "$USER_MSG" \ '{ model: "claude-opus-5", max_tokens: 1024, tools: $tools, tool_choice: {type: "auto", disable_parallel_tool_use: true},… code-execution-tool Claude Developer Platform · in the page agents-and-tools/tool-use/code-execution-tool …---------------------------------------------------------- | | Claude Opus 5 (claude-opus-5) | `code_execution_20250825`, `code_execution_20260120`, `code_execution_20260521` | | Clau… computer-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/computer-use-tool …ts)) - Supported models: `claude-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), Googl… define-tools Claude Developer Platform · in the page agents-and-tools/tool-use/define-tools …working SDK or cURL setup ## Choosing a model Use the latest Claude Opus model, Claude Opus 5, for complex tools and ambiguous queries; it handles multiple tools better and seeks clarification when… fine-grained-tool-streaming Claude Developer Platform · in the page agents-and-tools/tool-use/fine-grained-tool-streaming …-H "anthropic-version: 2023-06-01" \ -d '{ "model": "claude-opus-5", "max_tokens": 65536, "tools": [ { "name": "make_file", "description": "Write text… handle-tool-calls Claude Developer Platform · in the page agents-and-tools/tool-use/handle-tool-calls …`json JSON { "id": "msg_01Aq9w938a90dw8q", "model": "claude-opus-5", "stop_reason": "tool_use", "role": "assistant", "content": [ { "type": "text", "text":… memory-tool Claude Developer Platform · in the page agents-and-tools/tool-use/memory-tool …H "content-type: application/json" \ -d '{ "model": "claude-opus-5", "max_tokens": 2048, "messages": [ { "role": "user", "content": "Help me respond t… overview Claude Developer Platform · in the page agents-and-tools/tool-use/overview …H "content-type: application/json" \ -d '{ "model": "claude-opus-5", "max_tokens": 1024, "tools": [{"type": "web_search_20260209", "name": "web_search"}], "messages": [{"ro… parallel-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/parallel-tool-use …l calls...") response = client.messages.create( model="claude-opus-5", max_tokens=1024, messages=messages, tools=tools ) # Check for parallel tool calls tool_uses = [block for block in… Process results programmatically Claude Developer Platform · in the page agents-and-tools/tool-use/programmatic-tool-calling …| | Claude Mythos 5 (claude-mythos-5) | | Claude Opus 5 (claude-opus-5) | | Claude Opus 4.8 (claude-opus-4-8) | | Claude Opus 4.7 (claude-opus-4-7)… server-tools Claude Developer Platform · in the page agents-and-tools/tool-use/server-tools …H "content-type: application/json" \ -d '{ "model": "claude-opus-5", "max_tokens": 1024, "messages": [ { "role": "user", "content": "Search for compre… strict-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/strict-tool-use …-H "anthropic-version: 2023-06-01" \ -d '{ "model": "claude-opus-5", "max_tokens": 1024, "messages": [ {"role": "user", "content": "What is the weather in San Francisco?"… text-editor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/text-editor-tool …-H "anthropic-version: 2023-06-01" \ -d '{ "model": "claude-opus-5", "max_tokens": 1024, "tools": [ { "type": "text_editor_20250728", "name": "str_rep… Log at info level Claude Developer Platform · in the page agents-and-tools/tool-use/tool-runner …runner = client.beta.messages.tool_runner( model="claude-opus-5", max_tokens=1024, tools=[get_weather, calculate_sum], messages=[ { "ro… tool-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/tool-search-tool …rch_tool_regex_20251119`, `tool_search_tool_bm25_20251119` | | Claude Opus 5 (claude-opus-5) | `tool_search_tool_regex_20251119`, `tool_search_tool_bm25_20251119` | | Claude Opus 4.8…