Claude Opus 4
anthropic-claude-opus-4
Flagship Claude model for deep reasoning, coding, and long-horizon agents
Specification
most-agreed values
Context
200K
Max output
32K
Released
2025-05-22
Knowledge cutoff
2025-03-31
Retires
—
Open weights
no
Input
text, image, pdf
Output
text
Price
US dollars per million tokens · most-agreed
Input
$15.00
Output
$75.00
Cache read
$1.50
Cache write
$18.75
Quality
7 benchmarks · 2 sources
Composite
70th
percentile of 334 scored models
Rank
101 / 334
±0.05 sd
Evidence
7 × 2
3 or more benchmarks, from 2 or more sources
Effort range
4.6
points between effort settings
coding78th2/3 bench
reasoning74th1/4 bench
math54th4/7 bench
By reasoning effort
every setting placed on the same scale as the leaderboard
| Setting | Composite | Benchmarks behind it |
|---|---|---|
| 32k | 93rd | 1 |
| 16k | 73rd | 2 |
| 27k | 44th | 3 |
Every score
one row per source and configuration — nothing averaged away
| Benchmark | Score | Configuration | Source | Run |
|---|---|---|---|---|
| Aider polyglot | 72.0 | 32k · aider diff | Aider | 2025-05-25 |
| MATH level 5 | 85.0 ±1.0 | default | Epoch AI | 2025-05-22 |
| SWE-Bench verified | 70.7 ±2.1 | default | Epoch AI | 2026-02-06 |
| GPQA diamond | 76.3 ±3.0 | 16k | Epoch AI | 2025-05-22 |
| ↳ | 69.2 ±3.3 | default | Epoch AI | 2025-05-22 |
| Settings differ by 7.1 points on this benchmark. | ||||
| OTIS Mock AIME 2024-2025 | 64.4 ±7.2 | 27k | Epoch AI | 2025-05-28 |
| ↳ | 60.0 ±7.4 | 16k | Epoch AI | 2025-05-22 |
| ↳ | 42.2 ±7.4 | default | Epoch AI | 2025-05-22 |
| Settings differ by 22.2 points on this benchmark. | ||||
| FrontierMath-Tier-4-2025-07-01 | 2.1 ±0.0 | 27k · 2 runs | Epoch AI | 2025-07-01 |
| ↳ | 0.0 ±0.0 | default · 2 runs | Epoch AI | 2025-07-01 |
| Settings differ by 2.1 points on this benchmark. | ||||
| FrontierMath-v1 | 4.1 ±1.2 | 27k | Epoch AI | 2025-08-05 |
| ↳ | 2.2 ±1.2 | default · 2 runs | Epoch AI | 2025-07-04 |
| Settings differ by 1.9 points on this benchmark. | ||||
The leading figure for a benchmark is the median across its configurations, so one heroic high-effort run cannot set the number.
Available from 1 host
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| digitalocean | $15.00 | $75.00 | $1.50 | $18.75 | 200K | 32K | — |