OpenAI model
o3 API cost calculator
o3 costs $2 per 1M input tokens and $8 per 1M output tokens on the OpenAI API, with a 200K-token context window. A typical request (2K input, 500 output tokens) costs $0.0080 — about $240/month at 1,000 requests per day. Use the calculator below to model your exact workload.
Find me a cheaper modelWhat real workloads cost on o3
| Workload | Tokens (in / out) | Per request | Per 1K requests |
|---|---|---|---|
| Chatbot message | 500 / 300 | $0.0034 | $3.40 |
| RAG query with context | 4,000 / 500 | $0.01 | $12.00 |
| Document summarization | 20,000 / 1,000 | $0.05 | $48.00 |
| Agent coding session | 100,000 / 5,000 | $0.24 | $240 |
o3 vs other OpenAI models
| Model | Input /1M | Output /1M | Context |
|---|---|---|---|
| o3 | $2 | $8 | 200K |
| GPT-5.6 Luna Pro | $0.20 | $1.20 | 1.1M |
| GPT-5.6 Luna | $0.20 | $1.20 | 1.1M |
| GPT-5.6 Terra Pro | $2 | $12 | 1.1M |
| GPT-5.6 Terra | $2 | $12 | 1.1M |
Frequently asked questions
How much does o3 cost per 1M tokens?
According to current pricing data, o3 costs $2 per 1M input tokens and $8 per 1M output tokens. Processing 1M tokens each way costs $10.00.
What does a typical API request to o3 cost?
A typical request with 2,000 input tokens and 500 output tokens costs $0.0080. At 1,000 requests per day that is $8.00 daily, or about $240 per month.
What is o3's context window?
o3 supports a 200K-token context window (200,000 tokens).
Does o3 support prompt caching?
Yes. Cached input tokens cost $0.50 per 1M — a 75% discount versus the standard input rate, which matters for agents and chat apps that resend the same system prompt.
What is a cheaper alternative to o3?
Ling-2.6-flash from Inclusionai is currently the cheapest comparable option at $0.01 per 1M input tokens versus $2 for o3 — roughly 200x cheaper on input.
Prices may differ from OpenAI's official pricing page for batch, tiered, or fine-tuned usage. Compare all current prices on the live model pricing dashboard, see o3 vs Ling-2.6-flash pricing, or run o3 head-to-head against other models in the side-by-side comparison playground.
Pricing data via the OpenRouter models API.