Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
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OpenAIEfficientRETIRED

GPT-3.5 Turbo Instruct

Legacy

Completion-style GPT-3.5 ("instruct"). Retired — use chat completions on a current model.

GPT-3.5 Turbo Instruct is a efficient AI model from OpenAI. It costs $1.500 per million input tokens and $2.000 per million output tokens (blended $1.650/M), with a 4K-token context window.

Official model page ↗Provider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$1.500/M
per million input tokens
OUTPUT
$2.000/M
per million output tokens
BLENDED 70/30
$1.650/M
default reference rate · how it's calculated →
CONTEXT
4K
4,000 tokens
Benchmarks
No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.
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Frequently asked questions

How much does GPT-3.5 Turbo Instruct cost?

GPT-3.5 Turbo Instruct costs $1.500 per million input tokens and $2.000 per million output tokens, for a blended reference rate of $1.650 per million tokens.

What is GPT-3.5 Turbo Instruct's context window?

GPT-3.5 Turbo Instruct supports up to 4K tokens of context (4,000 tokens).

What is GPT-3.5 Turbo Instruct best for?

Completion-style GPT-3.5 ("instruct"). Retired — use chat completions on a current model.

Who makes GPT-3.5 Turbo Instruct?

GPT-3.5 Turbo Instruct is developed and served by OpenAI.