GPT-6 Sol vs GPT-6 Luna
GPT-6 Sol is from OpenAI, released September 22, 2026. GPT-6 Luna is from OpenAI, released September 22, 2026.
- LMArena Elo1456 vs 1444. GPT-6 Sol is 0.8% ahead on LMArena Elo.
- Input per 1M$2 vs $0.10. GPT-6 Luna costs 95% less per million input tokens.
- Output per 1M$10 vs $0.50. GPT-6 Luna costs 95% less per million output tokens.
- Context window1,050,000 vs 1,050,000. Both hold 1,050,000 tokens of context.
Prices are the vendors’ published API rates; Elo is LMArena’s text board. Each figure is dated on its model page.
Interactive Comparison
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$2 / $10 per 1M tokens | $0.10 / $0.50 per 1M tokens | |
|---|---|---|
| Identity | ||
| Developer | OpenAI | OpenAI |
| Released | Sep 2026 | Sep 2026 |
| Status | GA | GA |
| Licence | Proprietary | Proprietary |
| Self-hostable | No | No |
| Cost | ||
| Blended $/1M tokensinput × 0.75 + output × 0.25 | $4.000 / 1M tokens | $0.200 / 1M tokens |
| Input price | $2.000 / 1M tokens | $0.100 / 1M tokens |
| Output price | $10.000 / 1M tokens | $0.500 / 1M tokens |
| Cached input | $0.20 per 1M tokens | $0.01 per 1M tokens |
| Batch discount | 50% (Batch and Flex) | 50% (Batch and Flex) |
| Capacity | ||
| Context window | 1,050,000 tokens | 1,050,000 tokens |
| Max output | 128k tokens | 128k tokens |
| Long-context surcharge | Prompts over 272K input tokens: 2x input and cache rates, 1.5x output | Prompts over 272K input tokens: 2x input and cache rates, 1.5x output |
| Capability | ||
| Vision in | Yes | Yes |
| Audio in | No | No |
| Function calling | Yes | Yes |
| Structured output | Yes | Yes |
| Extended reasoning | Yes | Yes |
| Web search | Yes | Yes |
| Code execution | Yes | Yes |
| Access | ||
| API | Yes | Yes |
| Chat app | Yes | Yes |
| Fine-tuning | No | No |
| Measured quality | ||
| LMArena Elo | 1456 (checked Oct 2026) | 1444 (checked Oct 2026) |
| LMArena rank | Rank 66 | Rank 85 |
| Elo per dollarLMArena Elo ÷ blended $/1M tokens | 364 | 7220 |
