OpenAI: GPT-3.5 Turbo Instruct vs OpenAI: GPT-5.4 Pro

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

SpecOpenAI: GPT-3.5 Turbo InstructOpenAI: GPT-5.4 Pro
ProviderOpenAIOpenAI
Context Length4K1.1M
Max Output4K128K
Input Price/1M$1.50$30
Output Price/1M$2.00$180
Cache Read/1MFreeFree
Cache Write/1MFreeFree
Input ModalitiesTextText + Image + File
Output ModalitiesTextText
TokenizerGPTGPT
ModeratedYesYes