claude-sonnet-5.5 vercel-ai-gateway coding-tasks api-availability zero-data-retention

Claude Sonnet 5.5 lands on Vercel AI Gateway

Sonnet 5.5 now available via unified API with multi-step reasoning for coding tasks; swap it in with `anthropic/claude-sonnet-5.5` across AI SDK, OpenAI-compatible, or Anthropic Messages endpoints.

Summary

Single model string replaces version management across multiple client libraries. Multi-step task handling reduces iteration cycles for feature implementation and bug fixes. Zero Data Retention support enables production use in regulated environments.

Why it matters

Implementation verdict

Direct replacement for Sonnet 5 in existing AI Gateway integrations—no code changes required beyond model ID. Zero friction for SDK users (AI SDK, OpenAI-compatible clients); CLI setup exists for coding agents (Claude Code, fx). Worth testing now if you're already on AI Gateway; marginal migration effort otherwise.

Sources

1.Claude Sonnet 5.5 improves on Claude Sonnet 5 for well-scoped everyday work, from building features and fixing bugs to creating documents, slides, and spreadsheets.
2.On coding tasks, Sonnet 5.5 carries changes through multiple steps and checks its work before reporting completion.
3.Sonnet 5.5 supports Zero Data Retention on AI Gateway.
4.available on AI Gateway as `anthropic/claude-sonnet-5.5`

Dev Signal

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