claude-sonnet-5 vercel-ai-gateway llm-inference agentic-ai pricing

Claude Sonnet 5 launches on Vercel AI Gateway

Sonnet 5 reaches Opus-level coding performance at Sonnet pricing; set `model` to `anthropic/claude-sonnet-5` in AI SDK to access it.

Summary

Reduces model selection friction for agentic workloads—you can now skip Opus for most tasks, cutting inference costs by 50–67% through August 31. Stronger document parsing and long-context handling directly improve RAG and multi-turn workflows.

Why it matters

Implementation verdict

Replaces Sonnet 4.6 for coding/agentic work. Requires updating model identifier in AI SDK; zero breaking changes. Launch pricing ($2/$10 per M tokens) expires end-August, then rises to $3/$15—migrate proofs-of-concept now while discounted. Ready immediately.

Sources

1.Sonnet 5 improves on Sonnet 4.6 across coding and agentic work, reaching outcomes on many tasks that previously needed an Opus model, at Sonnet pricing.
2.Launch pricing of $2 per million input tokens and $10 per million output tokens runs through August 31, 2026.
3.The model is more agentic and follows instructions more closely. Document parsing and long-context memory use are also stronger.
4.set `model` to `anthropic/claude-sonnet-5` in the AI SDK

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