Model Tracker
GPT-3.5 Turbo Instruct
GPT-3.5 Turbo Instruct is an AI model made by OpenAI. OpenAI retired it on 28 September 2026. It takes text and returns text.
GPT-3.5 Turbo Instruct is an AI model made by OpenAI. OpenAI retired it on 28 September 2026. It takes text and returns text. Its context window is 4,096 tokens. Its longest answer is 4,096 tokens. Through the API it costs $1.50 per 1M tokens for input and $2.00 per 1M tokens for output. Its knowledge cutoff is 1 September 2021.
- Released
- Not confirmed: The maker's announcement says the model would be available in the coming weeks for early testing, but the pages consulted do not state the actual first-availability date.
- Status
- Not confirmed: two readings disagree: retired and deprecated
- Takes
- Text — developers.openai.com, read 16 October 2026
- Returns
- Text — developers.openai.com, read 16 October 2026
- Open weights
- Not confirmed: The consulted maker pages do not state whether this model's weights are open or downloadable.
- Licence
- Not confirmed: The consulted maker pages do not name a licence for this model.
- Context window
- 4,096 tokens — developers.openai.com, read 16 October 2026
- Longest answer
- 4,096 tokens — developers.openai.com, read 16 October 2026
- Knowledge cutoff
- 1 September 2021 — developers.openai.com, read 16 October 2026
- API price, input
- $1.50 per 1M tokens — developers.openai.com, read 16 October 2026
- API price, output
- $2.00 per 1M tokens — developers.openai.com, read 16 October 2026
- Where
- API — developers.openai.com, read 16 October 2026
- Parameters
- Not confirmed: The consulted maker pages do not publish the model's parameter count.
- Model card
- https://developers.openai.com/api/docs/models/gpt-3.5-turbo-instruct — developers.openai.com, read 16 October 2026
Questions
What is the context window of GPT-3.5 Turbo Instruct?
The context window of GPT-3.5 Turbo Instruct is 4,096 tokens, as OpenAI prints it.
How much does the GPT-3.5 Turbo Instruct API cost?
On the standard tier, GPT-3.5 Turbo Instruct costs $1.50 per 1M tokens for input and $2.00 per 1M tokens for output, as OpenAI lists it.
What does GPT-3.5 Turbo Instruct take and return?
GPT-3.5 Turbo Instruct takes text and returns text.
What is the knowledge cutoff of GPT-3.5 Turbo Instruct?
The knowledge cutoff of GPT-3.5 Turbo Instruct is 1 September 2021.
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Sources
- gpt-3.5-turbo-instruct Model | OpenAI API (read 16 October 2026)
- Deprecations | OpenAI API (read 16 October 2026)
- GPT-4 API general availability and deprecation of older models in the Completions API (read 16 October 2026)