MiniMax M3 (Reasoning)
by MiniMax
MiniMax M3 (Reasoning) is a reasoning model from MiniMax, released on June 1, 2026. It has a 1M-token context window and can generate up to 524K output tokens. API pricing is $0.28 per 1M input tokens and $1.1 per 1M output tokens. It ranks #44 of 220 models by Intelligence Score with a score of 40.8.
MiniMax M3 is the first open-weight model to combine three frontier capabilities: top-tier coding and agentic performance, a 1M-token context window, and native multimodality. It is powered by MiniMax Sparse Attention (MSA), a new sparse attention architecture that partitions the KV cache into blocks to cut per-token compute at long context — roughly 1/20 the cost of the previous generation at 1M tokens, with more than 9x faster prefill and more than 15x faster decode while matching full attention on most capabilities. Trained with mixed-modality data from step zero across 100T+ tokens, M3 natively supports image and video input and can operate a desktop computer. On SWE-Bench Pro it scores 59.0%, surpassing GPT-5.5 and Gemini 3.1 Pro and approaching Opus 4.7, and on BrowseComp it scores 83.5%, surpassing Opus 4.7. M3 supports toggling thinking on or off at request time.
Key specs
| Provider | MiniMax |
|---|---|
| Release date | 2026-06-01 |
| License | open source |
| Context window | 1M tokens |
| Max output | 524K tokens |
| Input price | $0.28 / 1M tokens |
| Output price | $1.1 / 1M tokens |
| Intelligence Score | 40.8 |
| Coding index | 30.8 |
| Output speed | 150 tokens/s |
| Time to first token | 3.05 s |
Quick answers
What is the context window of MiniMax M3 (Reasoning)?
MiniMax M3 (Reasoning) has a context window of 1M tokens, with a maximum output of 524K tokens per response.
How much does MiniMax M3 (Reasoning) cost?
MiniMax M3 (Reasoning) costs $0.28 per 1M input tokens and $1.1 per 1M output tokens through the API.
Is MiniMax M3 (Reasoning) open source?
Yes. MiniMax M3 (Reasoning) is an open model released under the open source license.
When was MiniMax M3 (Reasoning) released?
MiniMax released MiniMax M3 (Reasoning) on June 1, 2026.
How does MiniMax M3 (Reasoning) compare to Claude Opus 5.5 (Reasoning)?
MiniMax M3 (Reasoning) scores 40.8 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $0.28 vs $4 per 1M tokens.