OpenAI: GPT-3.5 Turbo Instruct
openai/gpt-3.5-turbo-instruct
Paid
Price Published
- Input
- $1.50 per million tokens
- Output
- $2.00 per million tokens
Optional features and fallback routes can cost extra. Confirm current terms with the provider.
Specifications Published
- Context window
- 4,095 tokens
- Max output
- 3,685 tokens
- Tool calling
- Not listed
- Vision input
- Not listed
- Reasoning
- Not listed
- Knowledge cutoff
- Sep 30, 2021
- Listed since
- Sep 28, 2023
Measured by the Club Signed cheapoS reports
Not yet observed No signed request reports for this exact route yet. Missing reports aren't a failure or a zero.
How we measure · Reports come from cheapoS members who share model details.
Try it
- Get an OpenRouter API key. Create one here. Other free tiers are compared on Providers.
- Add it to cheapoS. Open Models → Open OmniRoute, add OpenRouter with your key, then refresh models. Get cheapoS
- Pick this model. Use the ID
openai/gpt-3.5-turbo-instruct, and start with a small task you can check.
About this model OpenRouter description
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.
Similar-priced alternatives
- Mistral: Mistral Nemo
mistralai/mistral-nemo$0.02 / $0.03 per M · 131,072 context - inclusionAI: Ling 3.0 Flash VL
inclusionai/ling-3.0-flash-vl$0.02 / $0.06 per M · 262,144 context - inclusionAI: Ling 3.0 Flash
inclusionai/ling-3.0-flash$0.02 / $0.06 per M · 262,144 context - Sao10K: Llama 3 8B Lunaris
sao10k/l3-lunaris-8b$0.04 / $0.05 per M · 8,192 context - OpenAI: gpt-oss-20b
openai/gpt-oss-20b$0.02 / $0.09 per M · 131,072 context - Nex AGI: Nex-N2.5-Mini
nex-agi/nex-n2.5-mini$0.03 / $0.10 per M · 262,144 context
Catalog data from the OpenRouter model catalog, retrieved Sep 29, 2026, 12:37 PM UTC. A listing isn't a live availability check.