OpenAI: gpt-oss-120b (free) vs OpenAI: GPT-5.4 Mini

Side-by-side model comparison based on OpenRouter API data.

SpecOpenAI: gpt-oss-120b (free)OpenAI: GPT-5.4 Mini
ProviderOpenAIOpenAI
Context Length131K400K
Max Output131K128K
Input Price/1MFree$0.75
Output Price/1MFree$4.50
Cache Read/1MFree$0.07
Cache Write/1MFreeFree
Input ModalitiesTextFile + Image + Text
Output ModalitiesTextText
TokenizerGPTGPT
ModeratedYesYes
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OpenAI: gpt-oss-120b (free) vs OpenAI: GPT-5.4 Mini -- AI Model Comparison | AIToolRank