OpenAI gpt-4o
gpt-4o: OpenAI GPT 4o chat completions, paid per call in USDC. Per 1M tokens in/out: Standard (default) 2.5/10.0, Fast 4.25/17.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 75 ms
- Price
- $0.001 per call
- Paying buyers, last 30 days
- 2 (directory's own records)
- Paid calls, last 30 days
- 3
- Category
- AI model answers
- Address
- https://openai.mm.family/x402/v1/models/gpt-4o/chat/completions
Accuracy: paid answers checked against an independent record
Not yet in our paid checks. A seller we have not checked has neither passed nor failed.
Does it pass an agent's tools to the model?
We send one tool the question cannot be answered without. 0 of 0 checked calls reached the model; 0 came back with the model saying it was given no tools; 1 returned no answer.
| Day | Result | Model | What came back | Note |
|---|---|---|---|---|
| 2026-10-12 | no answer | HTTP 401 |
For agents
This page as JSON: /sellers/26f9069b75b0.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).