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Free launch period ends Thursday, Oct 22, 2026 at 12:00 UTC (72h after launch). After that, minimax/minimax-m3.1-flash is served at MiniMax list price ($0.15/M input, $0.60/M output, $0.015/M cached input) and the :free variant is retired; switch to the base slug to avoid interruption.

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MiniMax: MiniMax M3.1 Flash (free)

minimax/minimax-m3.1-flash:free

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MiniMax-M3.1-Flash is a multimodal model from MiniMax. Compared with M3, it delivers significant improvements across multiple benchmarks, particularly in complex agentic tasks, coding, and cybersecurity. It is built for complex, multi-step co-work automation, understanding real codebases, fixing bugs, and building features, and visual understanding and creation, including frontend and presentation creation. Open weights are planned.

Modalities
Price
Free
Context
1.0M
Released
Oct 19, 2026
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ProvidersPerformanceUptimeBenchmarksAppsActivityFAQExplore

Providers

This model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for MiniMax: MiniMax M3.1 Flash (free) (Artificial Analysis)
SourceBenchmarkScore
Artificial AnalysisMiniMax-M3.1-Flash Intelligence Index42.7
Artificial AnalysisMiniMax-M3.1-Flash HLE48.0%
Artificial AnalysisMiniMax-M3.1-Flash AA-LCR79.7%
Artificial AnalysisMiniMax-M3.1-Flash GDPval-AA47.9%
Artificial AnalysisMiniMax-M3.1-Flash CritPt22.3%
Artificial AnalysisMiniMax-M3.1-Flash SciCode53.4%
Artificial AnalysisMiniMax-M3.1-Flash Terminal-Bench 4.025.8%
Artificial AnalysisMiniMax-M3.1-Flash AA-Omniscience Accuracy56.2%
Artificial AnalysisMiniMax-M3.1-Flash AA-Omniscience Non-Hallucination Rate7.2%

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

API

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

Not currently available through EU in-region routing. In-region routing docs

Explore more models

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Frequently asked questions

MiniMax-M3.1-Flash is a multimodal model from MiniMax. Compared with M3, it delivers significant improvements across multiple benchmarks, particularly in complex agentic tasks, coding, and cybersecurity.

Yes. The pricing shown on this page for MiniMax M3.1 Flash (free) is zero, so you are not charged for prompt or completion tokens. Free endpoints are rate limited — see the rate limit docs.

MiniMax M3.1 Flash (free) has a 1,000,000 token context window. It supports up to 524,288 completion tokens.

Yes. MiniMax M3.1 Flash (free) accepts tools and tool_choice for function calling. It supports response_format for JSON output, without JSON-schema enforcement.

MiniMax M3.1 Flash (free) accepts text, images, and video as input and returns text.

MiniMax M3, MiniMax M2.7, MiniMax M2.5 and 5 more are other text models from MiniMax.

MiniMax M3.1 Flash (free) was released on October 19, 2026.