workhorseAnthropic·Released 2026-09
Claude Sonnet 5.5
Anthropic's current Sonnet model, offering the best combination of speed and intelligence.
Pricing verified October 20, 2026 · source
Key specifications
| Vendor | Anthropic |
| Tier | workhorse |
| Context window | 1M tokens |
| Pricing | $2 / $10 per 1M tokens (input/output) |
| Released | 2026-09 |
| Categories | Text GenerationAdvanced ReasoningCode GenerationMultimodalEnterprise |
Note: Verified 2026-10-20: model page shows Status "Active (latest)", released September 28, 2026, $2 / $10 per MTok, 1M context, 128K max output, retirement not sooner than September 28, 2027.
Key features
- •Current Sonnet model
- •Adaptive thinking
- •1M-token context window with 128K max output
- •Cache reads at $0.10 per 1M tokens
- •Available on the Claude API, Bedrock, Google Cloud, Microsoft Foundry and Claude Platform on AWS
Other models from Anthropic
Compare with similar models
Model lineups change often. AI Flash Report tracks new model releases and maintains a deprecation calendar for models being retired.
← Back to all AI models