---
title: "MiniMax launches M3.1 Flash at $0.15 per million input tokens, with open weights planned"
url: https://anawords.com/story/minimax-m3-1-flash-price-benchmarks-open-weights
published: 2026-10-20T13:25:16+05:30
updated: 2026-10-20T13:25:16+05:30
section: Models & Launches
author: Mayank Sahu
checked: sources checked by AI, approved by editor
version: 1
---

# MiniMax launches M3.1 Flash at $0.15 per million input tokens, with open weights planned

The Chinese lab says the model is faster and 70% cheaper on agent tasks than its predecessor. Independent tests from Artificial Analysis show strong scores and a high hallucination rate on one test.

**In short:** MiniMax released M3.1 Flash on 19 October 2026, priced at $0.15 per million input tokens and $0.60 per million output tokens through its API. The company says agent tasks cost 70% less than on its previous model and that open weights will follow.

## The launch

MiniMax says M3.1 Flash is available now through the MiniMax API, its M Plan subscription and MiniMax Code.[^1] The model was tested in public under the codename “Space Bunny” before launch.[^2]

## Price

- **Input:** $0.15 per million tokens.[^1][^2]
- **Output:** $0.60 per million tokens.[^1][^2]
- **Cached input:** $0.015 per million tokens.[^1][^2]

MiniMax says agent tasks cost 70% less than on its predecessor and that output speed exceeds 200 tokens per second, with median speeds above 170.[^1]

## Benchmarks

MiniMax reports its own results, including 76.2 on BankerToolBench, 73.7% on DeepSWE v1.1 and 61.7 on OSWorld 2.0.[^1]

Independent tests by Artificial Analysis, reported by VentureBeat, give M3.1 Flash 42 on its Intelligence Index, up from 29 for M3, at about $0.22 per task.[^2] On Artificial Analysis’s knowledge test, AA-Omniscience, it answered 56% correctly, with a 93% hallucination rate. That rate measures how often its non-correct answers were confidently wrong rather than declined, not the share of all answers.[^2] For fact-heavy uses, that means checking outputs remains important.

## Open weights

MiniMax says weights will be released later.[^1] VentureBeat reports the planned date as 23 October; licence terms have not been announced.[^2] VentureBeat also gives a 1 million token context window.[^2] We will update when weights appear.

## Why it matters

Prices for capable, fast models keep falling. M3.1 Flash adds pressure at the low end, where many agent workloads run. See our [API price tracker](/tracker/prices) for comparisons.

## Fact ledger

- [Confirmed] M3.1 Flash costs $0.15 input, $0.60 output and $0.015 cached input per million tokens. (source 1)
- [Company claim] MiniMax says agent tasks cost 70% less than on its predecessor. (source 1)
- [Unconfirmed] Artificial Analysis gives it 42 on its Intelligence Index, up from 29 for M3. (source 2)
- [Unconfirmed] On AA-Omniscience it scored 56% correct with a 93% hallucination rate. (source 2)
- [Unconfirmed] Open weights will be released later; VentureBeat reports 23 October. (source 2)
- [Not known] Licence terms for the open weights.

## Sources

1. [MiniMax: M3.1 Flash announcement](https://www.minimax.io/blog/minimax-m31f) — official
2. [VentureBeat: MiniMax’s new M3.1 Flash beats DeepSeek and Opus 5 on a key business benchmark at lower cost](https://venturebeat.com/technology/minimaxs-new-m3-1-flash-beats-deepseek-and-opus-5-on-a-key-business-benchmark-at-lower-cost-but-with-a-high-hallucination-rate)