Claude Sonnet 4.5
- In Input modalities: TextImage Out Output modalities: Text
- Reasoning
- Tool use
- Structured output
Prices
9 offerings · prices as listed Claude API (opens in a new tab)
claude-sonnet-4-5| Conditions/ 1M tokens | Input | Cache read | Cache write | Output | |
|---|---|---|---|---|---|
| 5-minute cache | 1-hour cache | ||||
| Standard | $3.00 | $0.30 | $3.75 | $6.00 | $15.00 |
| Batch | $1.50 | — | — | — | $7.50 |
Prices from Claude API pricing (opens in a new tab) (checked Nov 8, 2026)
Standard: the price a request with no conditions pays (the headline price elsewhere on the site).
Details
- Knowledge cutoff
- Jan 2025
- Open weights
- —
- Family
- claude-sonnet
- Model ID
Not stated on Anthropic’s pages: max input, reasoning efforts, reasoning can be off, max thinking budget, built-in tools, aliases.
Cited scores
From third-party leaderboards, not measured by us- Epoch Capabilities Index 147.6
#68 of 118 listed models · CI 146.2–149
- EQ-Bench Creative Writing v3 1,677
#34 of 94 listed models
- EQ-Bench Longform Writing 71.4
#37 of 92 listed models
- Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · License · as of Nov 5, 2026
- EQ-Bench by Samuel J. Paech (eqbench.com; EQ-bench/EQ-bench-site on GitHub), MIT License. · License · as of Oct 28, 2026
- changes we made
Included in coding plans
- Kiro Free Free50 credits per month
- Kiro Pro $20.00 / month1,000 credits per month
- Kiro Pro+ $40.00 / month2,000 credits per month
- Kiro Pro Max $100.00 / month5,000 credits per month
- Kiro Power $200.00 / month10,000 credits per month
Changes
All changes →- Available → Deprecated on Amazon Bedrock, ap-northeast-1
- Available → Deprecated on Amazon Bedrock, eu-central-1
- Available → Deprecated on Amazon Bedrock, us-east-1
- Available → Deprecated on Amazon Bedrock
- 3 new prices on Claude API Cache write (1-hour cache) $6.00 · Input (Batch) $1.50 · Output (Batch) $7.50
Sources
- Claude API pricing (opens in a new tab) platform.claude.com · checked Nov 8, 2026
- Claude Sonnet 4.5 model overview (opens in a new tab) platform.claude.com · checked Nov 8, 2026
- Amazon Bedrock pricing (opens in a new tab) aws.amazon.com · checked Nov 8, 2026
- Vertex AI generative AI pricing (opens in a new tab) cloud.google.com · checked Oct 25, 2026
- Structured outputs (opens in a new tab) platform.claude.com · checked Nov 8, 2026
- Programmatic tool calling (opens in a new tab) platform.claude.com · checked Nov 8, 2026
- Amazon Bedrock: model lifecycle (legacy and end-of-life models) (opens in a new tab) docs.aws.amazon.com · checked Nov 7, 2026
Anthropic’s official policies: data use, privacy, terms →
Anthropic · United States · anthropic.com
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