GPT-3.5 Turbo Instruct
OpenAI · openai/gpt-3.5-turbo-instruct
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.
GPT-3.5 Turbo Instruct ranks #246 of 348 models in the default AI Benchmark Hub order (quality first, then cost). At $1.75 blended per million tokens, it is cheaper than 37% of models with published API pricing. Its 4,095-token context window is 64.0× smaller than the catalog median (262,144 tokens).
texttext->text
Context
Max context: 4095
Max output: 3685
Max output: 3685
Pricing
Input / 1M: 1.50
Output / 1M: 2.00
Blend / 1M: 1.75
Output / 1M: 2.00
Blend / 1M: 1.75
Quality
Quality index: —
Provider
Provider: OpenAI
Moderated: yes
Moderated: yes
Monthly cost at this blended rate
Estimated API spend if every token is billed at $1.75per million (the blend of this model's input and output prices). Real bills depend on the input/output mix.
| Tokens / month | Est. cost (USD) |
|---|---|
| 1,000,000 | $1.75 |
| 10,000,000 | $17.50 |
| 100,000,000 | $175.00 |
Related models
Same lab, similar price, or similar quality — useful next comparisons.
More from OpenAI
- GPT-5.5$17.50 / 1M · Q 81.8
- GPT-5.4$8.75 / 1M · Q 80.6
- GPT-5.2 Chat$7.88 / 1M · Q 76.4
- GPT-5.2$7.88 / 1M · Q 76.4
- GPT-5.1$5.63 / 1M · Q 76.1
Closest API price
- Gemini 3 Flash Preview$1.75 / 1M · Q 78.5
- Seed-2.0-Code$1.75 / 1M
- Nano Banana 2 (Gemini 3.1 Flash Image)$1.75 / 1M
- Nano Banana 2 (Gemini 3.1 Flash Image Preview)$1.75 / 1M
- Qwen3.8 27B$1.71 / 1M · Q 89.0