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GPT-5.5 vs MiniMax M3

MiniMax M3 leads in 1 of 8 categories

Arena ELO

Tie

Cheaper

Tie

Faster

Tie

Detailed Comparison

CategoryGPT-5.5MiniMax M3
ProviderOpenAI MiniMax
Context Window128K 1M WIN
Input Price ($/1M)N/A N/A
Output Price ($/1M)N/A N/A
Arena ELON/A N/A
CodingN/A N/A
ReasoningN/A N/A
Speed (tokens/sec)N/A N/A
Open SourceNo Yes

Frequently Asked Questions

Which has a larger context window?

GPT-5.5 supports 128K context, while MiniMax M3 supports 1M.

Is GPT-5.5 or MiniMax M3 open source?

GPT-5.5 is proprietary. MiniMax M3 is open source.