Claude 4.5 Sonnet (Reasoning) API Pricing
Anthropic · released 2025-09-29
Also searched as: Claude 4.5 Sonnet pricing · 4.5 Sonnet price
Claude 4.5 Sonnet (Reasoning) price
0.300¢ / 1K
1.50¢ / 1K
0.600¢ / 1K
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | 0.6¢ |
| RAG query | 4,000 in / 500 out | $0.0195 |
| Long document summary | 50,000 in / 1,000 out | $0.1650 |
| Code review of a 2k-line file | 30,000 in / 2,000 out | $0.1200 |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $180.00 |
Cost = (input tokens ÷ 1,000,000 × $3.00) + (output tokens ÷ 1,000,000 × $15.00).
Benchmarks
#134 of 547
#65 of 195
#32 of 249
Similar intelligence, lower price
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Hy3-preview (Reasoning) | 22.7 | $0.10 |
| Ling-3.0-flash-Fin | 22.6 | $0.111 |
| Ling 3.0 Flash | 20.1 | $0.111 |
| MiMo-V2-Flash (Reasoning) | 20.8 | $0.15 |
| MiMo-V2.5 | 21.8 | $0.175 |
Leaderboard neighbours
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Qwen3 Max Thinking | 21.3 | — |
| MiniMax-M2.1 | 20.9 | $0.525 |
| MiMo-V2-Flash (Reasoning) | 20.8 | $0.15 |
| Claude 4.5 Sonnet (Reasoning) | 20.7 | $6.00 |
| GPT-5.4 nano (Xhigh) | 20.7 | $0.463 |
| Claude 4 Opus (Reasoning) | 20.6 | $30.00 |
| GPT-5 mini (Medium) | 20.6 | $0.688 |
More from Anthropic
| 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 |
| 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 |
Count tokens & estimate cost for Claude 4.5 Sonnet (Reasoning) See Claude 4.5 Sonnet (Reasoning) on the leaderboard
Source: Artificial Analysis · last synced 2026-10-15
FAQ
Who develops Claude 4.5 Sonnet (Reasoning)?
Claude 4.5 Sonnet (Reasoning) is developed by Anthropic, released 2025-09-29.
How much does Claude 4.5 Sonnet (Reasoning) cost per million tokens?
Claude 4.5 Sonnet (Reasoning) costs $3.00 per 1M input tokens and $15.00 per 1M output tokens ($6.00 blended), per Artificial Analysis's official pricing data.
What is the Claude 4.5 Sonnet (Reasoning) API price?
The Claude 4.5 Sonnet (Reasoning) API price is $3.00 per 1M input tokens and $15.00 per 1M output tokens ($6.00 per 1M blended).
How much does Claude 4.5 Sonnet (Reasoning) cost for a typical request?
A short chat reply (500 in / 300 out tokens) costs about 0.6¢ on Claude 4.5 Sonnet (Reasoning), at $3.00/1M input and $15.00/1M output.
Is Claude 4.5 Sonnet (Reasoning) free?
Claude 4.5 Sonnet (Reasoning)'s official API list price is $3.00 per 1M input tokens and $15.00 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 4.5 Sonnet (Reasoning) rank on benchmarks?
Claude 4.5 Sonnet (Reasoning) scores 20.7 on the Artificial Analysis Intelligence Index, ranking #134 of 547 models we track.
Is there a cheaper model with similar intelligence to Claude 4.5 Sonnet (Reasoning)?
Yes — Hy3-preview (Reasoning) scores similar intelligence (22.7) at $0.10/1M blended, versus $6.00/1M for Claude 4.5 Sonnet (Reasoning).
Where does this data come from?
Pricing and benchmark data for Claude 4.5 Sonnet (Reasoning) comes from Artificial Analysis (artificialanalysis.ai), synced daily. Last synced 2026-10-15.