Anthropic · Fast / lightweight
Claude Sonnet 5.5 Updated
Anthropic says it is about 30% faster than Sonnet 5 and up to 30% cheaper for most work
- Provider
- Anthropic
- Family
- Claude
- Model type
- Fast / lightweight
- Official release date
- Sep 28, 2026
- Release type
- New version
- Status
- Generally available
- Previous version
- Claude Sonnet 5
- Input
- text, image
- Output
- text
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- API model id
claude-sonnet-5-5- API price (input)
- $2 per 1M tokens
- API price (output)
- $10 per 1M tokens
- Price notes
- Cache hits $0.10/1M; Batch 50% off.
- Consumer apps
- —
- Developer API
- Claude API, Amazon Bedrock, Google Cloud, Microsoft Foundry, Claude Platform on AWS
- Free access
- None documented
- Paid access
- —
- Availability
- —
- Licence
- proprietary
Best use cases
- Coding
- Agents
- General assistant tasks
Benchmarks
No benchmark results recorded. We only list scores with a source, benchmark version and date.
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