GPT OSS 20B vs MiniMax M3.1 Flash
MiniMax M3.1 Flash leads the LLM Stats Score 48.5 to 17.7. GPT OSS 20B is 4.6x cheaper per token.
OpenAI · MiniMax · Updated for 2026
Which is better?
MiniMax M3.1 Flash leads the overall LLM Stats Score 48.5 to 17.7, ranking #29 overall.
On price, GPT OSS 20B is roughly 4.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
MiniMax M3.1 Flash also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT OSS 20B
- cost matters — it's about 4.6x cheaper per token
- you need open weights you can self-host or fine-tune
Choose MiniMax M3.1 Flash
- overall performance matters — it scores 48.5 and ranks #29 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Oct 2026
At a glance
The differences that matter most.
Individual benchmarks
7 reported for GPT OSS 20B · 14 for MiniMax M3.1 Flash
GPT OSS 20B and MiniMax M3.1 Flashdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT OSS 20B ($0.03/1M tokens) is 5.0x cheaper than MiniMax M3.1 Flash ($0.15/1M tokens).
For output processing, GPT OSS 20B ($0.14/1M tokens) is 4.3x cheaper than MiniMax M3.1 Flash ($0.60/1M tokens).
In conclusion, MiniMax M3.1 Flash is more expensive than GPT OSS 20B.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
MiniMax M3.1 Flash accepts 1,000,000 input tokens compared to GPT OSS 20B's 131,072 tokens. MiniMax M3.1 Flash can generate longer responses up to 524,288 tokens, while GPT OSS 20B is limited to 131,072 tokens.
Input capabilities
Documented input modalities across available providers
MiniMax M3.1 Flash supports multimodal inputs, whereas GPT OSS 20B does not.
MiniMax M3.1 Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT OSS 20B
MiniMax M3.1 Flash
License
Usage and distribution terms
GPT OSS 20B is licensed under Apache 2.0, while MiniMax M3.1 Flash uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Apache 2.0
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
GPT OSS 20B was released on 2025-08-05, while MiniMax M3.1 Flash was released on 2026-10-19.
MiniMax M3.1 Flash is 15 months newer than GPT OSS 20B.
Aug 5, 2025
1.2 years ago
Oct 19, 2026
-2 days ago
1.2yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GPT OSS 20B is available from DeepInfra, Novita, Fireworks, Groq, OpenAI. MiniMax M3.1 Flash is available from MiniMax.
GPT OSS 20B
MiniMax M3.1 Flash
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT OSS 20B and MiniMax M3.1 Flash side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT OSS 20B vs MiniMax M3.1 Flash.