M3.1 Flash MiniMax M3.1 Flash is an AI model built for agentic AI, coding, and visual reasoning. It reaches frontier scores on Automation-Bench (62%), DeepSWE (74%), and BabyVision (91%) while running at one-third the cost and three times the speed of MiniMax M3. Pricing is $0.15 input / $0.60 output per million tokens. The model was previously the stealth Space Bunny that processed 200T+ tokens and topped usage leaderboards. Open weights ship October 23.
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View on XCosigns Received
“I have been using @MiniMax_AI M3.1-Flash-Preview. It is a decent model. The results are amazing, given its size.”
“"Truth is stranger than fiction" - "MiniMax-M3.1-Flash" is a hard working and an intelligent model. The kind of bug it found is from the Codex repo that has too much of Rust and .mjs files. Massive codebase.”
“really happy to see chinese models back in action 🙌 i tried Space Bunny on OpenCode when it was still a stealth model and genuinely liked it. turns out it was MiniMax M3.1 Flash, and i somehow missed that it was the flash variant lol i remember testing it against Opus 5 and GPT-5.6 Sol on a few benchmarks and seeing some surprisingly close results $0.15/M input tokens, $0.60/M output tokens, and 170+ tokens/sec median speed pretty interesting to see models at this price point getting competitive at the kind of coding and agent tasks that usually get expensive fast”
“MiniMax M3.1 Flash just created Among Us game version just bought myself 5,000 credits and a new Minimax model created this game in 40 minutes and the cool thing is, I saved more than half of the credits a great model”
“MiniMax M3.1 Flash goes toe-to-toe with Opus and GPT on coding at ~25x lower cost. This was the model behind Space Bunny, the stealth model that’s been topping usage leaderboards recently. Free in Cline now!”
“Nice work! 🎉 We really liked our one-shot test earlier with Space Bunny: https://precisit.github.io/precisit-brain-prototype-test/pagoda-space-bunny.html”
“This model is insane at design. And 88x cheaper than Claude Opus 5.5 on my test! I asked M3.1 Flash (left) and Opus 5.5 (right) to build me a landing page for a hardware device launch. MiniMax cost just $0.014 vs $1.22 for Opus, while being 4x faster and more token efficient.”
“One thing I’m really excited about with M3.1-Flash is how we’re finding that sweet spot between intelligence, speed, and cost🤗 And M3-Pro is up next! Can’t wait to share what we’ve been working on, sooooon”