MiniMax M3.1 Flash now free to use on OpenRouter with 1M-token context

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MiniMax's M3.1 Flash model, previously available only through its own tools or a subscription, has been listed for free on OpenRouter, letting anyone with an API key try it. Released as a preview on September 27, 2026, it is a lighter sibling of the flagship M3 aimed at everyday coding tasks such as bug fixes and small features. The model accepts text, images and video as input, supports tool use, and offers a 1M-token context window. Unlike M3, its reasoning cannot be turned off, and users instead choose an effort level from low to max, with early users reporting decode speeds around 90 to 110 tokens per second that remain unverified. Free OpenRouter tiers are typically rate-limited, so the access is aimed at testing rather than production use.

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