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GPT-3.5 Turbo Instruct

OpenAI · released 28 Sept 2023

Input$1.5per 1M tokens

Output$2per 1M tokens

Context4Ktokens

WeightsClosed

context on a 1K–2M scale

About

This model is a variant of GPT-3.5 Turbo tuned for instructional prompts and omitting chat-related optimizations. Training data: up to Sep 2021.

Details

Lab: OpenAIopenrouter.ai · 3 Oct 2026
Context: 4Kopenrouter.ai · 3 Oct 2026
Input price: $1.5 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $2 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 3,685 tokensopenrouter.ai · 3 Oct 2026
Inputs: textopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/openai/gpt-3.5-turbo-instruct· checked 3 Oct 2026