Updated
GPT-6 Luna vs Grok 4.7
GPT-6 Luna had 81% fewer counted bugs per line than Grok 4.7 (0.31 vs 1.61).
| GPT-6 Luna | Grok 4.7 | |
|---|---|---|
| Bug rate | ||
| Relative bug rate | 0.31 | 1.61 |
| Rank | #1 of 7 | #7 of 7 |
| By language | ||
| TypeScript | 0.46 | 1.45 |
| Python | 0.26 | 1.37 |
| Details | ||
| Provider | OpenAI | xAI |
| Released | Sep 22, 2026 | Sep 21, 2026 |
| List price | $0.10 input / $0.50 output per 1M tokens | $2 input / $6 output per 1M tokens |
| Share of AI-written code, week of Nov 2 | 0.7% | 0.6% |
1.00 = average · lower is better
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Questions and answers
- Which has fewer bugs, GPT-6 Luna or Grok 4.7?
- GPT-6 Luna had 81% fewer counted bugs per line than Grok 4.7 (0.31 vs 1.61). GPT-6 Luna ranks #1 of 7 and Grok 4.7 #7.
- Which is cheaper, GPT-6 Luna or Grok 4.7?
- GPT-6 Luna lists at $0.10 input / $0.50 output per 1M tokens; Grok 4.7 lists at $2 input / $6 output per 1M tokens. GPT-6 Luna has the lower list price.
- Does it depend on the programming language?
- In TypeScript, GPT-6 Luna had the lower rate (0.46 vs 1.45); in Python, GPT-6 Luna had the lower rate (0.26 vs 1.37).
- Which is used more, GPT-6 Luna or Grok 4.7?
- GPT-6 Luna, with 0.7% of the AI-written code reviewed by cubic in the week of Nov 2, 2026, against 0.6% for Grok 4.7.