Default Claude threads to Opus 5 and probe SDK model capabilities#358
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- Update Claude SDK and client version metadata - Derive model efforts and fast-mode support from SDK capabilities
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Summary
@anthropic-ai/claude-agent-sdkand the tracked Claude Code client version to 2.1.219Capability verification
Claude Code 2.1.219 reports Opus 5 as the default model. Live billed requests against both
claude-opus-5andclaude-opus-5[1m]reported a 1,000,000-token context window and a 64,000-token maximum output.Validation
pnpm run testpnpm run typecheckpnpm run lintpnpm run fmt:checkpnpm run build