Anthropic · Workhorse
Claude Sonnet 5.5
The speed and intelligence balance point of Anthropic's current line, at $2 / $10. The natural default for production applications that do not need Opus-level depth.
Model ID: claude-sonnet-5-5
What that means
A worked example
Per-token pricing is hard to feel. Take a moderately chatty production workload: 100 calls a day, roughly 10,000 tokens in and 2,000 out each time. On Claude Sonnet 5.5 that comes to about:
$120 / month
Before caching, batching or volume discounts, all of which move this number a long way. Illustrative only.
Strong at
- -Coding
- -Agentic tasks
- -Cost efficiency at scale
Typical use
- -Production applications
- -Code generation
- -High-volume pipelines
Watch out for
- -Forced tool use (tool_choice any and tool) returns a 400 error
- -Thinking blocks only work in the account that produced them
Same tier
What else to look at
| Model | Developer | Context | In / 1M | Out / 1M |
|---|---|---|---|---|
| Claude Sonnet 5 | Anthropic | 1M | $2 | $10 |
| Claude Sonnet 4.6 | Anthropic | 1M | $3 | $15 |
| GPT-6.1 Sol | OpenAI | 1.05M | $2 | $10 |
| GPT-5.6 Terra | OpenAI | 1.05M | $2 | $12 |
| GPT-5.4 | OpenAI | 1.05M | $2.50 | $15 |
Verified 2026-10-11.