GPT-3.5 Turbo Instruct

OpenAI

This model is a variant of GPT-3.5 Turbo tuned for instructional prompts and omitting chat-related optimizations.

Technical Specifications

Context Window

4,095 tokens

Max Output

4,096 tokens

Pricing

Token Costs (per 1M tokens)

Cache Miss Input

$1.50

Non-Reasoning Output

$2

Legacy

Made legacy on March 6, 2026

Reason

Completions-only model; 4K context; no tool support

Recommended Replacement