GPT-5.6-Terra Coding Benchmark
How GPT-5.6-Terra ranks on the LLM Coding Leaderboard, shown next to the three models directly above and below it.
- Medium effort — place #6, 16.45 points (max 20). Last evaluated on August 10, 2026, with Codex CLI.
| # | Model | Total points (max 20) |
Avg cost per prompt |
Avg time per prompt |
Video | Tested with | Points per project (max 5) | |||
|---|---|---|---|---|---|---|---|---|---|---|
| CSV Import (PHP) | Offline Sync (PHP) | Bank Feed (Dart/Flutter) | Shipping Quotes (Go) | |||||||
| 3 | GPT-5.6-Luna (Max) | 17.5 | $0.10 | 14:18 | Codex CLI | 5 | 4.5 | 3 | 5 | |
| 4 | Opus 5 (High) | 17.5 | $1.65 | 06:33 | Claude Code | 5 | 3.5 | 4 | 5 | |
| 5 | Tencent Hy3 (High) | 16.45 | $0.05 | 06:35 | OpenCode | 3.2 | 3.75 | 4.5 | 5 | |
| 6 | GPT-5.6-Terra (Medium) | 16.45 | $0.20 | 02:44 | Codex CLI | 4.2 | 3.75 | 4 | 4.5 | |
| 7 | GPT-5.6-Luna (Xhigh) | 15.75 | $0.06 | 09:07 | Codex CLI | 4 | 4.75 | 2 | 5 | |
| 8 | Opus 4.8 (Medium) | 15.45 | $1.08 | 04:13 | Claude Code | 4.5 | 3.75 | 4 | 3.2 | |
| 9 | Kimi K3 | 14.95 | $0.63 | 12:49 | OpenCode | 4.5 | 3.25 | 3.2 | 4 | |
Tutorials about GPT-5.6-Terra
Video
· Jul 11, 2026
I Tested GPT-5.6 Luna and Terra with Low/Medium Efforts
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.
