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anthropics_skills/skills/claude-api/shared/platform-availability.md
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Lance Martin b29e7cf65e Update claude-api skill: Claude Opus 5 (#1476)
* Update claude-api skill: Claude Opus 5

- Add Claude Opus 5 (`claude-opus-5`) as the default model across all
  SDK examples, model tables, pricing, and migration guidance.
- Add an Opus 5 migration section covering the API changes that come
  with it, and move Opus 4.8 into the previous-generation slot.
- Drop the Opus 4.7 fast-mode guidance, which no longer applies.
- Scope the server-side fallbacks beta header to the current version.

* Update claude-api skill: Opus 5 fast-follow corrections

- Server-side refusal fallbacks are available on Claude Platform on AWS,
  not just the Claude API. Correct the availability statements in
  SKILL.md, the migration guide, and the platform-availability table.
- Simplify the effort guidance: start at `high` (the API default) and
  sweep down, rather than starting at `xhigh` for coding work.
- Add a time-to-first-token section with the prompt instruction that
  reduces pre-answer thinking on latency-sensitive routes.
- Replace the two separate thinking-disabled mitigations with the single
  combined instruction that covers both failure modes.
2026-07-24 16:12:34 -04:00

5.8 KiB

Platform Availability

Which features work on which provider platform. This table is the single source of truth in this skill — per-feature sections elsewhere point here instead of restating availability. When writing code for a third-party platform (Bedrock, Vertex, Foundry) or Claude Platform on AWS, check this table first; a feature not supported there means use the first-party Claude API surface or a different approach.

Columns: 1P = first-party Claude API, P-AWS = Claude Platform on AWS (Anthropic-operated, same-day parity), Bedrock = Amazon Bedrock, Vertex = Google Cloud Vertex AI, Foundry = Microsoft Foundry. = GA, β = beta, = not supported.

Feature 1P P-AWS Bedrock Vertex Foundry Notes
Messages, streaming, tool use Core API
PDF input β
Structured outputs / strict tool use β
Adaptive thinking / effort β
Extended thinking β
Prompt caching (5m, 1h) β
Automatic prompt caching β
Token counting β
Citations β
Search results content blocks β
Fine-grained tool streaming
Compaction β β β β β
Context editing β β β β β
Context windows (1M) β
inference_geo (data residency)
Server-side tools
  Web search β Vertex: basic web_search_20250305 only (no _20260209 dynamic filtering)
  Web fetch β
  Code execution β
  Tool search β Bedrock: InvokeModel API only, not Converse
  Advisor tool β β
Client-implemented tools
  Bash, text editor, memory β
  Computer use β β β β β
Agentic / orchestration
  Agent Skills (Messages API) β β β
  Programmatic tool calling β
  MCP connector β β β
  Managed Agents β β Foundry inferred (not in Foundry docs either way)
  Self-hosted sandboxes β β P-AWS: GET /v1/environments/{id}/work list endpoint not supported; other work endpoints OK
API endpoints
  Message Batches
  Files API β β β
  Models API
Other
  Mid-conversation system messages Claude Opus 5, Claude Opus 4.8, Claude Fable 5, Claude Mythos 5; not Claude Sonnet 5
  Server-side fallbacks β β "default" → beta server-side-fallback-2026-07-01; array form → beta server-side-fallback-2026-06-01
  Fast mode β Research preview, beta fast-mode-2026-02-01, first-party API only
  Cache diagnostics β First-party API only
  Task budgets β β Beta header task-budgets-2026-03-13; 3P availability not documented — assume unsupported