Compare models
Pick up to 4. Every model here is free in free-pi.
| DeepSeek V4.1 Flash | DeepSeek V4 Pro | GPT-6.1 Sol | Defense Flash | |
|---|---|---|---|---|
| Maker | DeepSeek | DeepSeek | OpenAI | — |
| Usage in free-pi | ~3.0x usage | ~8.6x usage | premium, uses allowance fast · ~41x usage | ~20x usage |
| Intelligence index | 39.5 | 30.4 | 51.8 (best) | — |
| Coding index | — | 59.4 | — | — |
| Context window | 1,048,576 tokens | 1,048,576 tokens | 1,050,000 tokens (best) | — |
| Max output | 393,216 tokens (best) | 384,000 tokens | 128,000 tokens | — |
| Inputs | Text, image | Text | Text, image, file (best) | — |
| Tool calling | Yes | Yes | Yes | — |
| Reasoning effort | Yes | Yes | Yes | — |
| Structured output | Yes | Yes | Yes | — |
| Released | Oct 17, 2026 | Apr 24, 2026 | Sep 29, 2026 | — |
| Model page | Model page | Model page | Model page | Model page |
Stats from OpenRouter; refreshed automatically. Usage rate from free-pi. Green marks the best value in each row. “—” means no figure is available.