free-pi

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

Gemini 4 Argon FlexDefense FlashGPT-OSS 120B
MakerGoogle—OpenAI
Usage in free-pislower, half price · ~20x usage~20x usage~0.6x usage
Intelligence index52.6 (best)—11.6
Coding index——30.4
Context window1,048,576 tokens (best)—131,072 tokens
Max output943,718 tokens (best)—65,536 tokens
InputsText, image, file, audio, video (best)—Text
Tool callingYes—Yes
Reasoning effortYes—Yes
Structured outputYes—Yes
ReleasedOct 13, 2026—Aug 5, 2025
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.