AI Model Atlas / OpenAI
GPT-3.5 Turbo (older v0613)
One million input tokens cost $1.00 and one million output tokens $2.00. Context window: 4k tokens, about 7 A4 pages.
What it costs in practice
Pricing per million tokens doesn't mean anything to anyone, so I convert it to three tasks that people actually give to models. The usage assumptions are listed for each row so you can verify them.
| Task | Input | Output | Cost |
|---|---|---|---|
| 1500-word articlebrief plus finished text in English | 1,500 tokens | 2,200 tokens | $0.0059 |
| 100 chat queries700 tokens per question and 400 per answer | 70,000 tokens | 40,000 tokens | $0.15 |
| Hour of work with an agentagent reads repository and writes fixes | 250,000 tokens | 30,000 tokens | $0.31 |
Technical details
| Provider | OpenAI |
| Modalities | text → text |
| Context window | 4k tokens (~7 A4 pages) |
| Maximum response | 4k tokens |
| Step-by-step reasoning | no |
| Tool calling | yes |
| Forced JSON format | yes |
| Knowledge cutoff | 2021-09-30 |
| Cache read | no data |
| Content moderation | no extra filter |
How it compares to the rest
The database contains 469 models. In terms of input pricing GPT-3.5 Turbo (older v0613) is more expensive than 63 percent of paid models. A longer context window is available in 468 models.
Input price history
2026-09-08 · $1.002026-11-11 · $1.00
The chart shows the price of a million input tokens on consecutive measurement days. History starts on the day I launched the atlas and grows with each day. I don't backfill data.
Alternatives at a similar price
Models from other providers whose cost for the same article comes out closest.
| Model | Input / M | Output / M | 1500-word article | Context |
|---|---|---|---|---|
| Grok Build 0.1xAI | $1.00 | $2.00 | $0.0059 | 256k |
| Grok 4.3 (batch)xAI | $1.00 | $2.00 | $0.0059 | 1M |
| Kimi K2 0711Moonshot AI | $0.57 | $2.30 | $0.0059 | 131k |
| Moondream 3 PreviewMoondream | $0.30 | $2.50 | $0.0060 | 32k |
Compare GPT-3.5 Turbo (older v0613) with another model or go back to the full database 469 models.