OpenAI: GPT-3.5 Turbo Instruct vs OpenAI: GPT-5.3 Chat

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

SpecOpenAI: GPT-3.5 Turbo InstructOpenAI: GPT-5.3 Chat
ProviderOpenAIOpenAI
Context Length4K128K
Max Output4K16K
Input Price/1M$1.50$1.75
Output Price/1M$2.00$14
Cache Read/1MFree$0.17
Cache Write/1MFreeFree
Input ModalitiesTextText + Image + File
Output ModalitiesTextText
TokenizerGPTGPT
ModeratedYesYes
Browse all models to add more comparisons