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fix(ai): support newer Anthropic system updates - #43180

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rekram1-node merged 2 commits into
v2from
anthropic-system-models
Aug 18, 2026
Merged

rekram1-node merged 2 commits into
v2from
anthropic-system-models

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@rekram1-node

@rekram1-node rekram1-node commented Aug 18, 2026 •

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Summary

  • recognize native mid-conversation system messages for Opus 4.8+
  • recognize Fable, Haiku, Mythos, Opus, and Sonnet 5+ without requiring exact model IDs
  • keep older, unknown, and non-Claude Anthropic Messages models on the wrapped-user fallback

Part of #41932.

Testing

  • bun test test/provider/anthropic-messages.test.ts
  • bun typecheck
  • bun run build
  • pre-push monorepo typecheck

@rekram1-node
rekram1-node merged commit eb3c4c8 into v2 Aug 18, 2026
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@rekram1-node
rekram1-node deleted the anthropic-system-models branch August 18, 2026 05:22
jinhuang712 pushed a commit to jinhuang712/opencode that referenced this pull request Sep 26, 2026
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