Claude Sonnet
Anthropic's balanced cost/capability line.
Current versionConfirmed
Claude Sonnet 5 claude-sonnet-5
Context 1M · max output 128K · text, image, pdf · tool use yes · structured output yes Vendor-documented
| Platform | Input / 1M | Output / 1M | Cached input / 1M | Batch discount | Effective |
|---|---|---|---|---|---|
| Direct API | $2 | $10 | $0.2 | 50% | 2026-06-10 Vendor-documented |
| AWS Bedrock | $2 | $10 | $0.2 | 50% | 2026-06-10 Community-reported |
Availability
| Platform | Region | Claude Sonnet 5 | Claude Sonnet 4.6 |
|---|---|---|---|
| Direct API | global | GA 10 Jun 2026 | GA 17 Feb 2026 |
| AWS Bedrock | ap-south-1 | GA 30 Jun 2026 | GA 10 Mar 2026 |
| AWS Bedrock | us-east-1 | GA 10 Jun 2026 | — |
| Google Vertex AI | global | GA 10 Jun 2026 | — |
All versions
- Claude Sonnet 5Confirmed
claude-sonnet-5· released 10 Jun 2026 - Claude Sonnet 4.6ConfirmedSuperseded
claude-sonnet-4-6· released 17 Feb 2026
Proofs across versions
| Suite | Version | Endpoint | Results | Run cost | Date |
|---|---|---|---|---|---|
| RAG over documents Measured by us | Claude Sonnet 5 | Direct API · global | Answer accuracy: 89.8% Citation faithfulness: 93.5% Hallucination rate: 2.9% | $9.30 | 23 Sept 2026 |