Compare models
Pick up to 4. Every model here is free in free-pi.
| Solar Pro 4 | Qwen3.5 35B (Darkbloom) | Defense Flash | Defense Flash 2 | |
|---|---|---|---|---|
| Maker | Upstage | — | — | — |
| Usage in free-pi | ~0.6x usage | ~1.4x usage | ~20x usage | ~20x usage |
| Intelligence index | 28.2 | — | — | — |
| Coding index | 52.7 | — | — | — |
| Context window | 524,288 tokens | — | — | — |
| Max output | 131,072 tokens | — | — | — |
| Inputs | Text | — | — | — |
| Tool calling | Yes | — | — | — |
| Reasoning effort | Yes | — | — | — |
| Structured output | Yes | — | — | — |
| Released | Aug 10, 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.