Opus 5.5 Coding Benchmark
How Opus 5.5 ranks on the LLM Coding Leaderboard, shown next to the three models directly above and below it, with the top three models included for reference. Opus 5.5 was tested at 3 effort levels, each ranked separately.
Last evaluated: 2 weeks ago (October 20, 2026), with Claude Code.
| # | Model | Total points (max 70) |
Avg cost per prompt |
Avg time per prompt |
Video | Tested with | Points per project | Consistency penalty | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Laravel Code Quality
(max 20) |
React-TS Code Quality
(max 20) |
Bug Finding Test
(max 10) |
Edge-case Testing (4 projects, max 20) |
||||||||
| 1 | Opus 5.5 (High) | 67.26 | $0.83 | 03:42 |
Claude Code |
18.68 | 19 | 9.58 | 20 | 0 | |
| 2 | GPT-6-Astra (High) | 66.35 | $0.96 | 04:34 |
Codex CLI |
18.6 | 18.17 | 9.58 | 20 | 0 | |
| 3 | GPT-6-Astra (Medium) | 66.03 | $0.69 | 03:08 |
Codex CLI |
18.2 | 17.83 | 10 | 20 | 0 | |
| 4 | GPT-6.1-Sol (High) | 66 | $0.23 | 04:19 |
Codex CLI |
18.5 | 18.83 | 9.17 | 19.5 | 0 | |
| 5 | Opus 5.5 (Medium) | 65.23 | $0.57 | 02:20 |
Claude Code |
18.95 | 18.5 | 8.33 | 19.5 | −0.05 | |
| 6 | GPT-6.1-Sol (Medium) | 65.05 | $0.15 | 02:24 |
Codex CLI |
18.17 | 18 | 9.38 | 19.5 | 0 | |
| 7 | Sonnet 5.5 (High) | 64.31 | $0.34 | 01:53 |
Claude Code |
18.68 | 18.5 | 8.13 | 19 | 0 | |
| 8 | Kimi K3.1 Pro (Max) | 63.8 | $0.74 | 13:39 |
OpenCode |
18.55 | 18.33 | 9.17 | 17.75 | 0 | |
| ⋯ 2 places not shown ⋯ | |||||||||||
| 11 | GPT-6.1-Sol (Low) | 60.7 | $0.10 | 01:21 |
Codex CLI |
17.53 | 16.67 | 8.75 | 18.5 | −0.75 | |
| 12 | Deepseek-V4.1-Flash-1017 (Max) | 60.47 | $0.07 | 07:09 |
OpenCode |
17.42 | 18.17 | 8.13 | 17.25 | −0.50 | |
| 13 | GPT-6.1-Terra (Max) | 60.41 | $0.27 | 07:55 |
Codex CLI |
17.82 | 18.17 | 7.92 | 16.5 | 0 | |
| 14 | Opus 5.5 (Low) | 60.1 | $0.37 | 01:21 |
Claude Code |
17.37 | 18.17 | 6.46 | 18.5 | −0.40 | |
| 15 | Sonnet 5.5 (Medium) | 60.04 | $0.20 | 00:58 |
Claude Code |
17.88 | 18.33 | 7.08 | 17.25 | −0.50 | |
| 16 | Grok 4.7 (High) | 59.59 | $1.85 | 23:27 |
Cursor |
17.7 | 18.33 | 7.81 | 16.25 | −0.50 | |
| 17 | Haiku 5.5 (High) | 59.03 | $0.05 | 03:37 |
Claude Code |
17.3 | 18 | 7.08 | 17.25 | −0.60 | |
Videos about Opus 5.5
Video
· Oct 20, 2026
I RE-Tested GPT-6.1-Sol vs Opus 5.5: A Month After Release
How to read this
- Each score measures a model-and-harness configuration, not the model in isolation.
- Prices are calculated with API costs. Models tested on a subscription plan show N/A.
- Full methodology and scoring formulas are explained in this article.
See every tested model side by side on the full LLM Coding Leaderboard.
