gpt-3.5-turbo-instruct

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

Reasoning
Speed
Context
4K
Max output
4K
Input price
—
Output price
—
Capabilities
vision
tool call
structured output
reasoning
json mode
streaming
fine tuning
batch
Details
Provider OpenAI
Creator OpenAI
Familygpt-3.5
Statusactive
Input modalitiestext
Output modalitiestext
Knowledge cutoff—
Release date—
Deprecation date—
Sourceofficial
Last updated2026-03-20
Max input—
gpt-3.5 family
ModelContextMax outInputOutput
gpt-3.5-0301
16K4K——
gpt-3.5-turbo-0125
16K4K——
gpt-3.5-turbo-0613T
16K4K——
gpt-3.5-turbo-16k-0613
16K4K——
gpt-3.5-turbo-instruct
4K4K——
API
GET/v1/models/openai/gpt-3.5-turbo-instruct