Model
Claude Sonnet 5 API pricing
Compare the published Claude Sonnet 5 (claude-sonnet-5) list rate with corouter's outlet rate, and estimate a monthly token bill. Claude Sonnet 5 lists below Sonnet 4.6 on both input and output and keeps the 1M window plus the Code tag. Send claude-sonnet-5 for that newer Sonnet ID.
Where this model fits
- Coding agents that should use the Sonnet 5 ID
- Long-context work at a list rate below Sonnet 4.6
- Vision plus code without stepping up to an Opus 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
- 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
- How to reduce your LLM API costsMost advice about cutting inference spend is vague. This is the concrete version: where the money goes, which five levers move it, and how much each one is worth on a real monthly volume.Read the post

