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Pick up to 4. Every model here is free in free-pi.
Defense Flash Solar Pro 4 Defense Flash 2
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| Defense Flash | Solar Pro 4 | Defense Flash 2 | |
|---|---|---|---|
| Maker | — | Upstage | — |
| Usage in free-pi | ~20x usage | ~0.6x 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 |
Stats from OpenRouter; refreshed automatically. Usage rate from free-pi. Green marks the best value in each row. “—” means no figure is available.