OpenAI: GPT-3.5 Turbo Instruct

openai/gpt-3.5-turbo-instruct

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.

Modalities

In / out price

$1.5 / $2 per 1M

Context

Released

Sep 28, 2023

Why use GPT-3.5 Turbo Instruct

Input	$1.5 / 1M tokens
Output	$2 / 1M tokens

List prices via OpenRouter, checked daily. Real cost depends on the provider and on reasoning tokens.

Pick a task, set how often you run it, and compare what it costs on each model.

TaskInput tokens≈ 602 wordsOutput tokens≈ 1,504 wordsRuns per month

Input served from cache: 0%Repeated prompts (same instructions or document) are billed at the cheaper cache-read price where the model supports it.

Model	Per run	Per month	Per 1,000 runs
OpenAI: GPT-3.5 Turbo Instruct	$0.0052	$5.20	$5.20

Estimates from list prices via OpenRouter; real bills vary by provider and reasoning tokens.

Each square is about one page (500 words). Colored squares are your content; grey squares are free space in the model's context window.

Your content

Total: about 120,000 tokens (≈ 90,226 words). Token counts are estimates.

Models

Zoom (square size): 6pxZoom out to see a whole million-token window at once.

4,095 tokens ≈ 7 pages

Does not fit: needs 29.3× the window. The oldest 97% would be cut off.

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