Model
Claude Sonnet 4.6 API pricing
Compare the published Claude Sonnet 4.6 (claude-sonnet-4-6) list rate with corouter's outlet rate, and estimate a monthly token bill. Claude Sonnet 4.6 keeps the previous Sonnet list rate, above Sonnet 5, with a 1M window and the Code tag. Send claude-sonnet-4-6 when a runbook still names it.
Where this model fits
- Coding agents still pinned to claude-sonnet-4-6
- Long-context answers at the previous Sonnet rate
- Vision workflows qualified on this ID
Estimates only. Actual billing depends on your real token counts, cache hit rate, and the prices in effect at request time.
From the blog
- GPT-5.5 vs Claude Sonnet 4.6, priced honestlyTwo frontier models from two vendors, compared on the only dimension we can verify: what they cost to run at published rates on identical workloads.Read the post
- OpenAI vs Anthropic API pricingBoth vendors publish per-million-token rates, but they price context, output, and caching differently enough that the cheaper choice depends entirely on your workload shape.Read the post

