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MiniMax has made the weights for M3.1 Flash publicly available, partnering with Together AI to offer serverless day-zero cloud inference.
MiniMax has officially released the open weights for its M3.1 Flash model, delivering on the rollout schedule planned for late October. Alongside the weight release, the company announced Together AI as an official day-zero launch partner, giving developers immediate access to production-grade serverless inference without needing to manage dedicated GPU infrastructure.
The model utilizes a Mixture-of-Experts (MoE) architecture comprising roughly 428 billion total parameters, with approximately 23 billion active parameters per token, paired with a context window of up to 1 million tokens. Designed primarily for automated agentic tasks, long coding operations, and enterprise workflow orchestration, M3.1 Flash emphasizes low latency, high token output throughput, and reduced execution costs.
By releasing the model weights alongside hosted cloud availability on Together AI, MiniMax offers teams flexibility between private self-hosting and managed enterprise deployment, addressing the growing demand for cost-efficient open-weight agent models.
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The launch post makes the focus clear: multi-step business workflows across SaaS tools, long coding sessions, operating a computer and security tasks like code auditing. A larger Pro model is promised "later". The weights are not yet released (vendor-stated), even though one API docs page already describes the model as open-weight, so treat self-hosting as a future option rather than a current one. For the previous generation, see our MiniMax M3 overview. [...] What is MiniMax M3.1 Flash? It is MiniMax's newest Flash model, built for agent tasks, coding, computer use and security work. MiniMax rolled it out on October 19, 2026 through its API, the M Plan and MiniMax Code, and says the weights will be released later (vendor-stated, read October 20, 2026). What is MiniMax M3.1 Flash pricing? MiniMax lists flat rates of $0.15 per million input tokens, $0.60 per million output tokens and $0.015 per million cached input tokens (vendor-stated, October 20, 2026). How much can it take in at
The model supports text and image inputs, text outputs and a context window of one million tokens, according to Artificial Analysis. MiniMax also claims that the model cangenerate more than 200 tokens per second, with median output speeds consistently exceeding 170 tokens per second. The company attributes the performance improvements partly to increased sparsity, an architectural approach intended to reduce the amount of computation required to generate responses. The weights remain proprietary at launch, but MiniMax says it plans to release them on October 23. It has not yet provided the licensing terms for that release, making it premature to determine how broadly enterprises will be able to modify or self-host the model. [...] | Muse Spark 1.1 / 1.2 / 1.3 | $1.25 | $4.25 | $5.50 | Meta | | Muse Spark Open — Together AI serverless | $1.25 | $4.25 | $5.50 | Together AI | | GLM-5.3 | $1.40 | $4.40 | $5.80 | Z.AI | | Grok 4.7 — ≤200K prompt tokens | $2.00 | $6.00 | $8.00 | xAI | | Q
Point Claude Code, OpenCode or Cline at the same base URL and model ID and you have a coding agent. Stream long replies, and keep the system prompt stable across turns so the $0.015 cached-input rate covers most of each request. ## Try it M3.1 Flash is the first model in this price band that holds its own on agent benchmarks, and the shrine demo shows what four hours and $4.50 buys. Run your own agent against MiniMaxAI/MiniMax-M3.1-Flash on GMI Cloud and compare the bill to what you pay today. Open weights land October 23, and the Pro variant follows. Roan Weigert Roan Weigert DevReal Lead @ GMI Cloud ## Build AI Without Limits GMI Cloud helps you architect, deploy, optimize, and scale your AI strategies ## Ready to build? [...] ## Model facts | Spec | MiniMax M3.1 Flash | --- | | Architecture | Mixture of experts, 428B total, about 23B active | | Context window | 1,048,576 tokens, flat pricing across the full window | | Input | Text and images (tested); PDF input was dropped
FinallyImage 55 r/micro1_ai•1mo ago ### Finally Image 56: r/micro1_ai - Finally 83 upvotes ·128 comments FINALLY !!!Image 57 r/micro1_ai•1mo ago ### FINALLY !!! Image 58: r/micro1_ai - FINALLY !!! 55 upvotes ·71 comments IT HAPPENED!Image 59 r/micro1_ai•1mo ago ### IT HAPPENED! Image 60: r/micro1_ai - IT HAPPENED! 392 upvotes ·240 comments One month of Mini :)Image 61 r/MINI•1mo ago ### One month of Mini :) Image 62: r/MINI - One month of Mini :) 293 upvotes ·31 comments Whew!Image 63 r/micro1_ai•1mo ago ### Whew! Image 64: r/micro1_ai - Whew! 26 upvotes ·25 comments [...] Time litterally wastedImage 86 r/micro1_ai•3mo ago ### Time litterally wasted Image 87: r/micro1_ai - Time litterally wasted 31 upvotes ·33 comments As permanent underclass member, i am once again asking for 3.7 flash lite miniImage 88 r/GeminiAI•2mo ago ### As permanent underclass member, i am once again asking for 3.7
## Where to Get It M3.1 Flash is available through the MiniMax API, the M Plan subscription and the MiniMax Code desktop app. MiniMax has said open weights will follow, with its official account naming October 23 as the date. A more capable Pro model is also on the way. Cheap, fast models have become the main battleground for Chinese labs since DeepSeek started a price war across the sector, and DeepSeek’s own V4.1-Flash-1017 update landed just days earlier. Independent reviewers put M3.1 Flash among the cheapest frontier-class models available, while flagging a high hallucination rate, a weakness that matters for businesses letting agents act without supervision. [...] + Technologies - Software - Gadgets - Fintech - Medical devices - Chemistry & materials - Nanotechnology - Transport - Energy & fuel Featured + Videos + Images + Posts About Write For Us [...] Home Articles + Latest news + Spotlight news + Developments + Ideas + Comp
on X: "M3.1 Flash weights are now open 🔓 Thanks to @togethercompute for being a day-0 launch partner and bringing M3.1 Flash to production on the AI Native Cloud. Open weights, no GPUs to manage. Great building together! 🐰" Image 1: Avatar MiniMax (official) @MiniMax_AI M3.1 Flash weights are now open 🔓 Thanks to @togethercompute for being a day-0 launch partner and bringing M3.1 Flash to production on the AI Native Cloud. Open weights, no GPUs to manage. Great building together! 🐰 @MiniMax_AIFollow Code: @MiniMaxAgent MiniMax Design: @Hailuo_AI API: platform.minimax.io M Plan: minimax.io/m-plan Image 8: Avatar Together AI@togethercomputeFollow Accelerate inference, model shaping, and pre-training on a research-optimized platform. ## Trending now