GPT-5.5 vs MiniMax H3

GPT-5.5 leads in 3 of 8 categories

Arena ELO

Tie

Cheaper

GPT-5.5

Faster

Tie

Detailed Comparison

Category	GPT-5.5	MiniMax H3
Provider	OpenAI	MiniMax
Context Window	128K WIN	uncertain
Input Price ($/1M)	$5 WIN	N/A
Output Price ($/1M)	$30 WIN	N/A
Arena ELO	N/A	N/A
Coding	N/A	N/A
Reasoning	N/A	N/A
Speed (tokens/sec)	N/A	N/A
Open Source	No	No

Frequently Asked Questions

Which has a larger context window?

GPT-5.5 supports 128K context, while MiniMax H3 supports uncertain.

Is GPT-5.5 or MiniMax H3 open source?

GPT-5.5 is proprietary. MiniMax H3 is proprietary.

Related Articles

oMLX 0.4.5.dev1 speeds up GLM-5.2 and MiniMax M3

GLM-5.2 beats GPT-5.5 on coding tests

MiniMax’s lockup expiry is a stress test, not a red flag

Deploy MiniMax M3 with vLLM OpenAI API

Run MiniMax M3 locally in Unsloth Studio

Self-host MiniMax M3 on GPU cloud

More Comparisons

GPT-5.5 vs Claude Opus 4.5 GPT-5.5 vs Llama 4 Scout GPT-5.5 vs Claude Haiku 4.5 GPT-5.5 vs Qwen 3.6 GPT-5.5 vs Kimi K2.7 Code GPT-5.5 vs Llama 4 Maverick GPT-5.5 vs GPT-5.3-Codex GPT-5.5 vs Gemma 4 MiniMax H3 vs Claude Opus 4.5 MiniMax H3 vs Llama 4 Scout MiniMax H3 vs Claude Haiku 4.5 MiniMax H3 vs Qwen 3.6 MiniMax H3 vs Kimi K2.7 Code MiniMax H3 vs Llama 4 Maverick MiniMax H3 vs GPT-5.3-Codex MiniMax H3 vs Gemma 4