# FrontierCode 2.0 — AI model rankings

whether a model’s code changes to open-source repositories would be merged by their maintainers (version 2.0); separate from FrontierCode v1.1 scores

5 tracked models have a published FrontierCode 2.0 score. Higher is better. Scores come from published lab reports and benchmark sources; recorded sources appear beside the scores.

## Ranking

| Rank | Model | Developer | Score | Source | Released |
| --- | --- | --- | --- | --- | --- |
| 1 | Claude Fable 5.2 | Anthropic | 49.1% | Lab | Nov 9 2026 |
| 2 | Claude Opus 5.5 | Anthropic | 45.5% | Lab | Sep 22 2026 |
| 3 | GPT-6 Astra | OpenAI | 42.8% | Lab | Sep 3 2026 |
| 4 | Gemini 4 Carbon | Google | 41.1% | Lab | Oct 28 2026 |
| 5 | Claude Fable 5.1 | Anthropic | 32.4% | Lab | Sep 1 2026 |


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Canonical page: https://aireleasetracker.com/benchmark/frontiercode-2.0
Site index: https://aireleasetracker.com/llms.txt
Source: AI Release Tracker (https://aireleasetracker.com). Most benchmark scores come from lab launch material; gathered results identify the leaderboard that published them.