Claude Opus 5.5 (Max, Default Fallback) API PricingNEW
Anthropic · released 2026-09-22 · merges 5 reasoning-effort tiers
Also searched as: Claude Opus 5.5 pricing · Opus 5.5 price
Benchmarks shown for the highest-scoring reasoning tier. Merged tiers: Claude Opus 5.5 (Max, Default Fallback), Claude Opus 5.5 (Xhigh, Default Fallback), Claude Opus 5.5 (High, Default Fallback), Claude Opus 5.5 (Medium, Default Fallback), Claude Opus 5.5 (Low, Default Fallback).
Claude Opus 5.5 price
0.400¢ / 1K
2.00¢ / 1K
0.800¢ / 1K
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | 0.8¢ |
| RAG query | 4,000 in / 500 out | $0.0260 |
| Long document summary | 50,000 in / 1,000 out | $0.2200 |
| Code review of a 2k-line file | 30,000 in / 2,000 out | $0.1600 |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $240.00 |
Cost = (input tokens ÷ 1,000,000 × $4.00) + (output tokens ÷ 1,000,000 × $20.00).
Benchmarks
#1 of 547
Similar intelligence, lower price
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Claude Sonnet 5.5 (Max, Default Fallback) | 56.0 | $4.00 |
Leaderboard neighbours
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Claude Opus 5.5 (Max, Default Fallback) | 57.6 | $8.00 |
| Claude Sonnet 5.5 (Max, Default Fallback) | 56.0 | $4.00 |
| Muse Wonder Full (Max) | 55.8 | — |
| Claude Fable 5.1 (Max, Default Fallback) | 53.4 | $20.00 |
More from Anthropic
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Claude Sonnet 5.5 (Max, Default Fallback) | 56.0 | $4.00 |
| Claude Fable 5.1 (Max, Default Fallback) | 53.4 | $20.00 |
| Claude Opus 5 (Max) | 50.8 | $10.00 |
| Claude Fable 5 (Max, Opus 4.8 Fallback) | 49.6 | $20.00 |
| Claude Haiku 5.5 (Max) | 43.4 | $0.20 |
| Claude Opus 4.8 (Max) | 41.8 | $10.00 |
| Claude Opus 4.7 (Max) | 40.7 | $10.00 |
| Claude Sonnet 5 (Max) | 38.2 | $4.00 |
Count tokens & estimate cost for Claude Opus 5.5 (Max, Default Fallback) See Claude Opus 5.5 (Max, Default Fallback) on the leaderboard
Source: Artificial Analysis · last synced 2026-10-15
FAQ
Who develops Claude Opus 5.5 (Max, Default Fallback)?
Claude Opus 5.5 (Max, Default Fallback) is developed by Anthropic, released 2026-09-22.
How much does Claude Opus 5.5 (Max, Default Fallback) cost per million tokens?
Claude Opus 5.5 (Max, Default Fallback) costs $4.00 per 1M input tokens and $20.00 per 1M output tokens ($8.00 blended), per Artificial Analysis's official pricing data.
What is the Claude Opus 5.5 API price?
The Claude Opus 5.5 API price is $4.00 per 1M input tokens and $20.00 per 1M output tokens ($8.00 per 1M blended).
How much does Claude Opus 5.5 cost for a typical request?
A short chat reply (500 in / 300 out tokens) costs about 0.8¢ on Claude Opus 5.5, at $4.00/1M input and $20.00/1M output.
Is Claude Opus 5.5 free?
Claude Opus 5.5's official API list price is $4.00 per 1M input tokens and $20.00 per 1M output tokens. This site tracks list prices only, not free tiers or trial credits — check Anthropic's site for those.
How does Claude Opus 5.5 (Max, Default Fallback) rank on benchmarks?
Claude Opus 5.5 (Max, Default Fallback) scores 57.6 on the Artificial Analysis Intelligence Index, ranking #1 of 547 models we track.
Is there a cheaper model with similar intelligence to Claude Opus 5.5 (Max, Default Fallback)?
Yes — Claude Sonnet 5.5 (Max, Default Fallback) scores similar intelligence (56.0) at $4.00/1M blended, versus $8.00/1M for Claude Opus 5.5 (Max, Default Fallback).
Where does this data come from?
Pricing and benchmark data for Claude Opus 5.5 (Max, Default Fallback) comes from Artificial Analysis (artificialanalysis.ai), synced daily. Last synced 2026-10-15.