Claude Sonnet 5.5
Model ID
- Context
- 1M
- 128K max output
- Input price
- $2.00
- per 1M tokens · Claude API
- Output price
- $10.00
- per 1M tokens
- Epoch Capabilities Index
- 165.2
- #3 of 105 listed
- LMArena Text
- 1,471
- #33 of 149 listed
Where to run it
7 offerings · prices as listed| Meter | Tier | Price |
|---|---|---|
Claude API (opens in a new tab) claude-sonnet-5-5 | ||
| Input | Standard | $2.00 / 1M tokens |
| Batch | $1.00 / 1M tokens | |
| Output | Standard | $10.00 / 1M tokens |
| Batch | $5.00 / 1M tokens | |
| Cache read | Standard | $0.20 / 1M tokens |
| Cache write | 5-minute cache | $2.50 / 1M tokens |
| 1-hour cache | $4.00 / 1M tokens | |
Amazon Bedrock (opens in a new tab) Claude Sonnet 5.5 | ||
| Input | Standard | $2.00 / 1M tokens |
| Output | Standard | $10.00 / 1M tokens |
| Cache read | Standard | $0.20 / 1M tokens |
| Cache write | 5-minute cache | $2.50 / 1M tokens |
| 1-hour cache | $4.00 / 1M tokens | |
Amazon Bedrock (opens in a new tab) Claude Sonnet 5.5 | ||
| Input | Standard | $2.20 / 1M tokens |
| Output | Standard | $11.00 / 1M tokens |
| Cache read | Standard | $0.22 / 1M tokens |
| Cache write | 5-minute cache | $2.75 / 1M tokens |
| 1-hour cache | $4.40 / 1M tokens | |
Amazon Bedrock (opens in a new tab) Claude Sonnet 5.5 | ||
| Input | Standard | $2.20 / 1M tokens |
| Output | Standard | $11.00 / 1M tokens |
| Cache read | Standard | $0.22 / 1M tokens |
| Cache write | 5-minute cache | $2.75 / 1M tokens |
| 1-hour cache | $4.40 / 1M tokens | |
Google Cloud Vertex AI (opens in a new tab) Claude Sonnet 5.5 | ||
| Input | Standard | $2.00 / 1M tokens |
| Batch | $1.00 / 1M tokens | |
| Prompts over 200K tokens | $2.00 / 1M tokens | |
| Output | Standard | $10.00 / 1M tokens |
| Batch | $5.00 / 1M tokens | |
| Prompts over 200K tokens | $10.00 / 1M tokens | |
| Cache read | Standard | $0.20 / 1M tokens |
| Batch | $0.10 / 1M tokens | |
| Prompts over 200K tokens | $0.20 / 1M tokens | |
| Cache write | 5-minute cache | $2.50 / 1M tokens |
| 1-hour cache | $4.00 / 1M tokens | |
| 5-minute cacheBatch | $1.25 / 1M tokens | |
| 1-hour cacheBatch | $2.00 / 1M tokens | |
| Prompts over 200K tokens5-minute cache | $2.50 / 1M tokens | |
| Prompts over 200K tokens1-hour cache | $4.00 / 1M tokens | |
Google Cloud Vertex AI (opens in a new tab) Claude Sonnet 5.5 | ||
| Input | Standard | $2.20 / 1M tokens |
| Batch | $1.10 / 1M tokens | |
| Prompts over 200K tokens | $2.20 / 1M tokens | |
| Output | Standard | $11.00 / 1M tokens |
| Batch | $5.50 / 1M tokens | |
| Prompts over 200K tokens | $11.00 / 1M tokens | |
| Cache read | Standard | $0.22 / 1M tokens |
| Batch | $0.11 / 1M tokens | |
| Prompts over 200K tokensBatch | $0.11 / 1M tokens | |
| Cache write | 5-minute cache | $2.75 / 1M tokens |
| 1-hour cache | $4.40 / 1M tokens | |
| 5-minute cacheBatch | $1.38 / 1M tokens | |
| 1-hour cacheBatch | $2.20 / 1M tokens | |
Google Cloud Vertex AI (opens in a new tab) Claude Sonnet 5.5 | ||
| Input | Standard | $2.20 / 1M tokens |
| Batch | $1.10 / 1M tokens | |
| Prompts over 200K tokens | $2.20 / 1M tokens | |
| Output | Standard | $11.00 / 1M tokens |
| Batch | $5.50 / 1M tokens | |
| Prompts over 200K tokens | $11.00 / 1M tokens | |
| Cache read | Standard | $0.22 / 1M tokens |
| Batch | $0.11 / 1M tokens | |
| Prompts over 200K tokensBatch | $0.11 / 1M tokens | |
| Cache write | 5-minute cache | $2.75 / 1M tokens |
| 1-hour cache | $4.40 / 1M tokens | |
| 5-minute cacheBatch | $1.38 / 1M tokens | |
| 1-hour cacheBatch | $2.20 / 1M tokens | |
News
All news →- Sep 28, 2026 Anthropic releases Claude Sonnet 5.5 Anthropic launched Claude Sonnet 5.5 (claude-sonnet-5-5) on the Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry. Context window, output limits, and prices are on its model page.
Changes
All changes →- New language model
Cited scores
From third-party leaderboards, not measured by us- Epoch Capabilities Index 165.2
#3 of 105 listed models · CI 161.8–169.4
- LMArena Text 1,471
#33 of 149 listed models · xhigh effort · CI 1,461–1,481 · 3,145 votes
- Epoch AI · FrontierMath Tiers 1–3 88.8%
#7 of 74 listed models · max effort · ±1.87
- Epoch AI · GPQA Diamond 95.6%
#2 of 128 listed models · max effort · ±1.37
- LMArena Text · Chinese 1,533
#13 of 149 listed models · xhigh effort · CI 1,497–1,568 · 244 votes
- LMArena Text · Coding 1,536
#11 of 149 listed models · xhigh effort · CI 1,515–1,558 · 779 votes
- LMArena Vision 1,290
#19 of 87 listed models · xhigh effort · CI 1,275–1,305 · 1,608 votes
- Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · License · as of Oct 3, 2026
- LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · License · as of Oct 2, 2026
- changes we made