O

OpenAI

gpt-3-5-turbo-instruct

OpenRouter price

Model overview

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.

Context window: 4,095 tokens
Knowledge cutoff: —
Price last verified: 2026-09-06
First observed: 2026-08-11

Open pricing source ↗

Descriptions, capabilities, and tariffs come from the linked source. First-party prices take priority; OpenRouter fallbacks are labelled.

Capabilities and formats

text
frequency penalty
logit bias
logprobs
max tokens
presence penalty
response format
seed
stop
structured outputs
temperature
top logprobs
top p

Performance references

No comparable benchmark data is currently available.

PRICE EVOLUTION

Price history

Original observation and every later change, including any change of price source.

Original observed priceOfficial price unavailable2026-08-11
Input: —Cached input: —Cache write 5m: —Cache write 1h: —Output: —
Price changeOpenRouter price2026-08-20
Input: $1.5Cached input: —Cache write 5m: —Cache write 1h: —Output: $2