pemistahl/grex
A command-line tool and Rust library with Python bindings for generating regular expressions from user-provided test cases
Results by Model
| # | Model | Score Percentage of hidden behavioral tests passed. | Cost Total API cost in USD for this task instance. | Calls Number of LLM API calls for this task instance. | |
|---|---|---|---|---|---|
| 1 |  |
GPT 5.5 (xhigh) OpenAI | 97.2% | $9.20 | 71 |
| 2 | |
GPT 5.5 (high) OpenAI | 88.7% | $6.81 | 57 |
| 3 |  |
Claude Opus 4.7 (xhigh) Anthropic | 82.1% | $31.59 | 231 |
| 4 | |
Claude Opus 4.7 Anthropic | 73.9% | $7.62 | 153 |
| 5 | |
GPT 5.4 OpenAI | 66.5% | $0.32 | 7 |
| 6 | |
Claude Opus 4.6 Anthropic | 66.0% | $16.93 | 266 |
| 7 |  |
Gemini 3.1 Pro Google | 61.4% | $1.29 | 159 |
| 8 | |
GPT 5.5 OpenAI | 58.1% | $1.56 | 22 |
| 9 | |
Claude Sonnet 4.6 Anthropic | 56.3% | $48.82 | 743 |
| 10 | |
Gemini 3 Flash Google | 52.8% | $0.23 | 81 |
| 11 | |
GPT 5 mini OpenAI | 34.7% | $0.08 | 36 |
| 12 | |
GPT 5.4 mini OpenAI | 21.6% | $0.05 | 10 |
| 13 | |
Claude Haiku 4.5 Anthropic | 0.0% | $1.02 | 104 |
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