free-pi

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Pick up to 4. Every model here is free in free-pi.

Defense FlashSolar Pro 4Kimi K3.1 Pro
Maker—UpstageMoonshotAI
Usage in free-pi~20x usage~0.6x usage~41x usage
Intelligence index—28.2—
Coding index—52.7—
Context window—524,288 tokens1,048,576 tokens (best)
Max output—131,072 tokens943,718 tokens (best)
Inputs—TextText, image, video (best)
Tool calling—YesYes
Reasoning effort—YesYes
Structured output—YesYes
Released—Aug 10, 2026Oct 23, 2026
Model pageModel 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.