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Best AI model for debugging
For debugging, GPT-6 Astra scores highest on the current data (72.9), weighting coding 50%, reasoning 30%, agentic & tool use 20%. The cheapest model in the top 10 is Gemini 3.8 Flash at $0.75 / $3.75 per million tokens.
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Weights: Coding 50%, Reasoning 30%, Agentic & Tool Use 20%. Debugging rewards reading unfamiliar code and reasoning about cause and effect.
| # | Model | Provider | Fit | Coding | Reasoning | Agentic & Tool Use | Input $/M | Output $/M |
|---|---|---|---|---|---|---|---|---|
| 1 | GPT-6 Astra | OpenAI | 72.9 | 73.7 | 85.1 | 52.9 | $10 | $50 |
| 2 | Claude Fable 5.1 | Anthropic | 70.5 | 74.7 | 76.7 | 50.7 | $10 | $50 |
| 3 | Claude Fable 5 | Anthropic | 69.2 | 70.6 | 76.8 | 54.0 | $10 | $50 |
| 4 | Claude Opus 5.5 | Anthropic | 69.1 | 71.9 | 80.2 | 45.3 | $4 | $20 |
| 5 | Claude Opus 5 | Anthropic | 68.0 | 67.5 | 77.2 | 55.6 | $5 | $25 |
| 6 | GPT-5.6 Sol | OpenAI | 65.0 | 65.1 | 74.8 | 50.3 | $4 | $20 |
| 7 | GPT-6.1 Sol | OpenAI | 64.1 | 63.2 | 81.9 | 39.6 | $2 | $10 |
| 8 | GPT-5.5 | OpenAI | 61.1 | 58.2 | 72.8 | 50.7 | $5 | $30 |
| 9 | Gemini 3.8 Flash | 61.0 | 59.2 | 76.9 | 41.8 | $0.75 | $3.75 | |
| 10 | GPT-6 Sol | OpenAI | 59.7 | 60.1 | 74.0 | 37.2 | $2 | $10 |
| 11 | Claude Opus 4.8 | Anthropic | 58.9 | 59.9 | 64.7 | 47.6 | $5 | $25 |
| 12 | Claude Sonnet 5.5 | Anthropic | 58.8 | 67.3 | 54.0 | 45.0 | $2 | $10 |
| 13 | Kimi K3 (open weights) | Moonshot AI | 57.8 | 61.0 | 63.0 | 41.8 | $3 | $15 |
| 14 | Gemini 3.7 Flash | 57.5 | 56.2 | 70.0 | 42.1 | $0.75 | $3.75 | |
| 15 | Claude Opus 4.6 | Anthropic | 56.2 | 57.2 | 57.8 | 51.1 | $5 | $25 |
| 16 | Grok 4.6 | xAI | 55.5 | 58.5 | 61.4 | 39.4 | $2 | $6 |
| 17 | Claude Opus 4.7 | Anthropic | 55.5 | 59.6 | 53.8 | 47.9 | $5 | $25 |
| 18 | GPT-5.6 Terra | OpenAI | 55.1 | 57.7 | 60.7 | 40.1 | $2 | $12 |
| 19 | GPT-5.4 | OpenAI | 54.2 | 52.6 | 61.8 | 46.5 | $2.50 | $15 |
| 20 | Gemini 4 Argon | 54.1 | 62.0 | 44.2 | 49.2 | — | — | |
| 21 | Muse Spark 1.3 | Meta | 52.3 | 56.6 | 54.0 | 38.6 | $1.25 | $4.25 |
| 22 | Qwen3.8 Max | Alibaba (Qwen) | 52.1 | 53.5 | 54.4 | 45.4 | $2 | $6 |
| 23 | Grok 4.5 | xAI | 51.8 | 52.2 | 56.1 | 44.4 | $2 | $6 |
| 24 | Grok 4.7 | xAI | 51.0 | 58.0 | 49.1 | 36.7 | $2 | $6 |
| 25 | Claude Sonnet 5 | Anthropic | 51.0 | 55.5 | 49.1 | 42.8 | $2 | $10 |
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Top two head to head: GPT-6 Astra vs Claude Fable 5.1
Frequently asked questions
What is the best ai model for debugging?
For debugging, GPT-6 Astra scores highest on the current data (72.9), weighting coding 50%, reasoning 30%, agentic & tool use 20%. The cheapest model in the top 10 is Gemini 3.8 Flash at $0.75 / $3.75 per million tokens.
How is this shortlist built?
Debugging rewards reading unfamiliar code and reasoning about cause and effect. Each model's category scores are blended with those weights; only ranked models with results in every needed category are listed.
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