Compare models
Pick up to 4. Every model here is free in free-pi.
| Defense Flash | Kimi K3.1 Pro | Muse Spark Open (Meta) | GLM 5.3 Flash | |
|---|---|---|---|---|
| Maker | — | MoonshotAI | Meta | Z.ai |
| Usage in free-pi | ~20x usage | ~41x usage | premium, uses allowance fast · ~25x usage | ~1.5x usage |
| Intelligence index | — | — | — | 41.8 |
| Coding index | — | — | — | 71.5 |
| Context window | — | 1,048,576 tokens (best) | 1,048,576 tokens (best) | 1,048,576 tokens (best) |
| Max output | — | 943,718 tokens (best) | 943,718 tokens (best) | 943,717 tokens |
| Inputs | — | Text, image, video | Text, image, file, audio, video (best) | Text, image, video |
| Tool calling | — | Yes | Yes | Yes |
| Reasoning effort | — | Yes | Yes | Yes |
| Structured output | — | Yes | Yes | Yes |
| Released | — | Oct 23, 2026 | Oct 15, 2026 | Aug 26, 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.