OpenAI: gpt-oss-20b (free) vs OpenAI: GPT-5.4

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

SpecOpenAI: gpt-oss-20b (free)OpenAI: GPT-5.4
ProviderOpenAIOpenAI
Context Length131K1.1M
Max Output131K128K
Input Price/1MFree$2.50
Output Price/1MFree$15
Cache Read/1MFree$0.25
Cache Write/1MFreeFree
Input ModalitiesTextText + Image + File
Output ModalitiesTextText
TokenizerGPTGPT
ModeratedYesYes
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