Coding benchmark
FrontierCode 1.1 Main leaderboard
Every model the catalog carries a published FrontierCode 1.1 Main value for, ranked by that value.
Cognition's 100-task software-engineering benchmark for whether coding agents produce mergeable, production-quality pull requests, scored for correctness, tests, scope, style, and maintainability through maintainer-authored rubrics.
FrontierCode 1.1 Main ranking
13 models with a published FrontierCode 1.1 Main value, ordered by that value, highest first. Models the source has not scored on this benchmark are not listed — they are unmeasured, not last.
| Rank | Model | Provider | Repository task completion with maintainer rubrics |
|---|---|---|---|
| 1 |  Claude Fable 5 | Anthropic | 53.5 |
| 2 | Claude Opus 5 | Anthropic | 53.4 |
| 3 |  GPT-6 Astra | OpenAI | 53.3 |
| 4 |  SWE-2 | Cognition | 50.0 |
| 5 | Claude Opus 4.8 | Anthropic | 46.5 |
| 6 |  Gemini 3.7 Flash | 43.6 | |
| 7 | GPT-5.5 | OpenAI | 43.0 |
| 8 | Claude Sonnet 5 | Anthropic | 42.7 |
| 9 | SWE-1.7 | Cognition | 42.3 |
| 10 | Claude Opus 4.7 | Anthropic | 38.5 |
| 11 | GPT-5.4 mini | OpenAI | 27.0 |
| 12 | Claude Opus 4.6 | Anthropic | 26.9 |
| 13 | Claude Sonnet 4.6 | Anthropic | 24.3 |
Evidence key: Observed
Rows are ordered by the value FrontierCode leaderboard published, highest first. The source does not state whether a higher value is the better result, so this page does not either: for a benchmark that measures a rate of failure, read the table from the bottom.