Anthropic
Claude Sonnet 5.5
Claude Sonnet 5.5 scores 1768 on WebDev Arena — rank 3 of 29 models we track with a published score and costs $4 per 1M blended tokens on the API — it is the highest-scoring model you can buy for $4 or less.
API price
$4
per 1M blended tokens
WebDev Arena
1768
rank 3 of 29 tracked models
Benchmark scores
| Benchmark | Score | Rank | Source | Published |
|---|---|---|---|---|
| WebDev Arena | 1768xHigh | #3 of 29 | LMArena | 2026-10-19 |
| FrontierCode | 52.1%xhigh | #3 of 25 | Epoch AI Benchmarking Hub | 2026-09-28 |
| FrontierSWE | 61.9%max | #3 of 12 | Epoch AI Benchmarking Hub | 2026-09-28 |
| CursorBench | 55.5%max | #2 of 10 | Epoch AI Benchmarking Hub | 2026-09-28 |
The rank is among the 29 models we track with a published score for that benchmark — not the full leaderboard of the source, which lists many models we do not track. Where a source publishes several reasoning-effort settings, we show the model's best listed result.
API price
- Input
- $2 per 1M tokens
- Output
- $10 per 1M tokens
- Blended (3 input : 1 output)
- $4 per 1M tokens
Check Anthropic docs for the exact model ID.
Checked 2026-10-17 · source
Where it sits
WebDev Arena score against API price, with every model we can price and score on the same benchmark. Up and to the left is better.
- Value frontier
- On the frontier
- Cheaper models on the frontier
- GLM-5.3-Flash1607 · $0.24, DeepSeek V4.1 Flash1664 · $0.52, Qwen3.8-Max1674 · $3
Plans that include Claude Sonnet 5.5
- Claude Pro
Anthropic
- Claude Team (Standard seat)
Anthropic
- Claude Max 5x
Anthropic
- Claude Team (Premium seat)
Anthropic
- Claude Max 20x
Anthropic
Other Anthropic models
Common questions
- How much does Claude Sonnet 5.5 cost?
- $2 per 1M input tokens and $10 per 1M output tokens, which is $4 on a 3:1 input:output mix. The price was checked on 2026-10-17.
- Which subscription plans include Claude Sonnet 5.5?
- 5 of the plans we track list it by name: Claude Pro ($20/mo), Claude Team (Standard seat) ($25/mo), Claude Max 5x ($100/mo), Claude Team (Premium seat) ($125/mo) and 1 more.
- How does Claude Sonnet 5.5 rank on WebDev Arena?
- It ranks 3 of 29 models we track with a published WebDev Arena score, at 1768. The rank is among the models on this site, not the full LMArena leaderboard.
- Is Claude Sonnet 5.5 the best value for coding?
- Yes. On our chart it is the highest-scoring model you can buy for $4 or less on WebDev Arena.
- What is the cheapest way to use Claude Sonnet 5.5?
- Claude Pro is the cheapest subscription we track that lists it, at $20/month ($17/month billed annually). Per-token API pricing is listed separately above.