models: add Claude 5 family to Bedrock matrix - #384
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August 1, 2026 13:16
…t 5) Add three GA Claude models to the Bedrock picker: - anthropic.claude-fable-5 (1M context, launched 2026-06-09) - anthropic.claude-opus-5 (1M context, launched 2026-07-24) - anthropic.claude-sonnet-5 (1M context, launched 2026-06-30) All support Messages API, Converse, streaming, vision, and tool use. Update recommended Bedrock model from Sonnet 4.6 to Sonnet 5. Refs andrewyng#383
… format Bedrock API no longer accepts the old versioned IDs: - anthropic.claude-sonnet-4-6-v1:0 → anthropic.claude-sonnet-4-6 - anthropic.claude-haiku-4-5-v1:0 → anthropic.claude-haiku-4-5-20251001-v1:0 Verified via `aws bedrock list-foundation-models` (us-east-1).
Bedrock no longer supports on-demand invocation with bare model IDs for these models — requires the cross-region inference profile prefix (us.).
Consistent with Sonnet 4.6 and Haiku 4.5 — Bedrock requires inference profile IDs for on-demand invocation.
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Update: discovered during testing that Bedrock now requires inference profile IDs (e.g. Fixed in the latest commits — all Bedrock Claude entries now use the |
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Summary
Add three GA Claude 5 models to the Bedrock picker in
coworker/providers/matrix.py:anthropic.claude-fable-5anthropic.claude-opus-5anthropic.claude-sonnet-5All support Messages API, Converse, streaming, vision, and tool use — same capabilities as the existing Sonnet 4.6 entry.
Also updates the recommended Bedrock model from Sonnet 4.6 to Sonnet 5.
What was tested
aws bedrock list-foundation-models(us-east-1)pytest tests/test_bedrock_provider.py tests/test_providers.py tests/test_model_errors.py— 54 passed)Changes
coworker/providers/matrix.py— 3 new Bedrock Claude entriescoworker/providers/registry.py— updated recommended modeltests/test_bedrock_provider.py— addedtest_bedrock_claude_5_family_in_matrixCloses #383