MiniMax has opened M3.1 Flash through its API, M Plan and MiniMax Code with global token pricing; weights remain unreleased.
MiniMax opens M3.1 Flash weights after its low-cost API launch
2026-10-19Verified announcementTRIAL
MiniMax M3.1 Flash is available through the API, M Plan and MiniMax Code at $0.15 per million input tokens and $0.60 per million output tokens. MiniMax has now also published a 252 GB, 48-shard checkpoint on Hugging Face under a custom license. Vendor speed and benchmark claims remain unverified independently.
Availability: MiniMax API, M Plan and MiniMax Code; public 252 GB checkpoint in 48 safetensor shards
What this means for you
For teams with high-volume coding or agent workloads, M3.1 Flash can now be tested both through the low-cost API and on controlled infrastructure. Self-hosting decisions must review the custom license and memory requirements, while quality claims still need workload-specific reproduction.
Evidence & related material
MiniMax published a 252 GB, 48-shard M3.1 Flash checkpoint on Hugging Face under a custom license.
Subsequent changes
Follow-up verification confirms public M3.1 Flash weights, correcting the earlier unavailable status
Model weights were promised later and were recorded as unavailable at the cutoff. → A 252 GB, 48-shard checkpoint is public on Hugging Face under a custom license.
Technical details & scores
| Availability | MiniMax API, M Plan and MiniMax Code; public 252 GB checkpoint in 48 safetensor shards |
|---|---|
| Weights Published At | HF initial commit 2026-10-23T03:37:20Z; evaluation metadata updated 2026-10-30T08:44:16Z |
| License | custom MiniMax model license; review before production or redistribution |
| Pricing Usd Per Million Tokens | input 0.15 output 0.6 cached_input 0.015 |
| Vendor Speed Claim | 200+ TPS peak; 170+ TPS median |
| Vendor Benchmarks | DeepSWE v1.1 73.7%; OSWorld V2 61.7; CyberGym 82%; evaluation details are vendor-reported |
| Time Basis | The visible official page gives 2026-10-19 without a time; midnight metadata is not treated as a verified publication time. |
Technical impact 4
Engineering value 4
Adoption signal 2
Maturity 4
Verification cost 2
Risk 3