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GPT-3.5 Turbo Instruct

OpenAItext → textOpenRouter

The cheapest provider for GPT-3.5 Turbo Instruct is OpenAI at $1.625 per 1M tokens (blended), charging $1.50 per 1M input and $2.00 per 1M output tokens. It is served by a single provider. Context window: 4K tokens. Prices tracked since Oct 3, 2026.

Best price
$1.625
at OpenAI
Input / output
$1.50 / $2.00
per 1M tokens
Providers
1
no spread
7 days
—
best price
30 days
—
best price
Context
4K
tokens

Providers

Active offers ranked by blended price. Bars are relative to the most expensive.

  • OpenAICheapest
    $1.625
    $1.50 in · $2.00 out
    best
    4K ctx
Blended = (3 × input + output) / 4.

Price history

Hover to compare providers at any point in time. Click a legend item to hide it.

USD per 1M tokens · each step is a price change
Not enough history yet
Tracking since Oct 3, 2026. The chart fills in as new crawls arrive every 6 hours.

Change log

Every recorded change for this model since Oct 3, 2026.

No changes yet
Tracking since Oct 3, 2026. Price changes, new providers and delistings will show up here.

About this model

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.
Released
Sep 28, 2023
First tracked
Oct 3, 2026
Canonical slug
openai/gpt-3.5-turbo-instruct