Field noteOct 19, 20262 min read1 source

MiniMax M3.1 Flash goes toe-to-toe with Opus and GPT on coding at ~25x lower cost.

In one minute

MiniMax M3.1 Flash is a newly announced model with stated availability through the MiniMax API, M Plan, and MiniMax Code.

The announcement reports 73.7% on DeepSWE v1.1 and 61.7 on OSWorld V2. It lists prices of $0.15 per million input tokens, $0.60 per million output tokens, and $0.015 per million cached input tokens, and says agent-task usage costs 70% less than its predecessor. These are company-published claims, not independently verified results.

Implication: Builders can compare the published rates and benchmark claims with the cost and completion quality of their own coding and computer-use tasks.

Thesis

A low-cost model release matters when teams can test the price-performance tradeoff in their own agent workflows.

Observed facts

  • MiniMax says M3.1 Flash is available through the MiniMax API, M Plan, and MiniMax Code.

    1
  • MiniMax reports 73.7% on DeepSWE v1.1 and 61.7 on OSWorld V2.

    1
  • The announcement lists $0.15 per million input tokens, $0.60 per million output tokens, and $0.015 per million cached input tokens.

    1

Mechanism

M3.1 Flash pairs reported benchmark performance with published per-token prices and access through three MiniMax channels, making an initial evaluation possible without waiting for the announced later release of model weights.

Why now

MiniMax says the model is available now through its API, M Plan, and MiniMax Code. That enables teams to test the stated economics directly, while the launch is current.

Implications

  1. Builders can compare the published rates and benchmark claims with the cost and completion quality of their own coding and computer-use tasks.

Evidence boundary

The supplied source is MiniMax’s announcement; it gives company-reported benchmark scores and pricing but no independent replication or detailed evaluation methodology in the supplied material.

Watch conditions

  1. Independent evaluations and real workflow tests should show whether the reported capability and cost translate into reliable completed tasks.

Evidence / sources

  1. 1minimax.io/blog/minimax-m31f
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