OpenAI: GPT-3.5 Turbo (older v0613) API Pricing
OpenAI: GPT-3.5 Turbo (older v0613) costs $1.00 per 1M input tokens and $2.00 per 1M output tokens. Context window: 4K. Prices verified 2026-10-21 · source
Alternatives to consider
Cheapest openai model — 97% less per month
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What would OpenAI: GPT-3.5 Turbo (older v0613) cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $16.00 |
| Coding agent | 5,000 | 8,000 / 2,000 | $60.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $150.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $44.00 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About OpenAI: GPT-3.5 Turbo (older v0613)
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks. Training data up to Sep 2021.
Compare OpenAI: GPT-3.5 Turbo (older v0613) with
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Popular head-to-heads — see all on the comparisons index.
Frequently asked questions
How much does OpenAI: GPT-3.5 Turbo (older v0613) cost?
OpenAI: GPT-3.5 Turbo (older v0613) costs $1.00 per 1M input tokens and $2.00 per 1M output tokens. Verified 2026-10-21 — provider source.
What is the context window?
4K tokens, with up to 4K output tokens per response. That's roughly 5 pages of text in a single request.
Does it support prompt caching?
Prompt-caching pricing is not published for this model via OpenRouter.
What's a cheaper alternative?
ScaleDown: Summarize saves about 98% on a typical workload with comparable quality.
Official resources
- OpenAI: GPT-3.5 Turbo (older v0613) on OpenRouter — live endpoint, pricing source of record.
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