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GPT-5.4 vs MiMo V2

GPT-5.4 leads in 4 of 8 categories

Arena ELO

GPT-5.4

Cheaper

GPT-5.4

Faster

MiMo V2

Detailed Comparison

CategoryGPT-5.4MiMo V2
ProviderOpenAI Xiaomi
Context Window1M WIN256K
Input Price ($/1M)$3 WINN/A
Output Price ($/1M)$15 WINN/A
Arena ELO1560 WINN/A
Codingunknown unknown
Reasoningunknown unknown
Speed (tokens/sec)~50 t/s ~70 t/s WIN
Open SourceNo Yes

Frequently Asked Questions

Which is better for coding, GPT-5.4 or MiMo V2?

GPT-5.4 scores unknown on coding benchmarks, while MiMo V2 scores unknown.

Which has a larger context window?

GPT-5.4 supports 1M context, while MiMo V2 supports 256K.

Is GPT-5.4 or MiMo V2 open source?

GPT-5.4 is proprietary. MiMo V2 is open source.