What the evidence says
- Developer
- OpenAI
- Released
- June 13, 2023
- Domains
- Language
- Tasks
- Language modeling/generation · Question answering · Chat
- Access
- API access
- Weights
- Closed weights
Platform facts
OpenRouter's platform listing, retrieved July 22, 2026. Routed platform prices, not first-party provider prices.
- Input price
- $0.50 per 1M tokens
- Output price
- $1.50 per 1M tokens
- Context length
- 16,385 tokens
- Listed on OpenRouter
- May 28, 2023
Common questions
What is GPT-3.5 Turbo?
GPT-3.5 Turbo is a OpenAI model released June 13, 2023, according to Epoch AI's reviewed catalog record. The record classifies it under language.
How does GPT-3.5 Turbo rank on LMArena?
No board Model Gauntlet mirrors currently lists this exact model revision under a reviewed identity, so no rating is reported here.
What does GPT-3.5 Turbo cost?
OpenRouter lists it at $0.50 per million input tokens and $1.50 per million output tokens, retrieved July 22, 2026. Those are the platform's routed prices, not first-party provider prices.