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CheapestInference Text Completions
x402
CheapestInference Text Completions is a paid API for AI agents from api.cheapestinference.com, paid per call via x402, $10/call, status unknown (last checked 2026-09-15).
Generate text completions using 200+ open-source AI models via a flat-rate, OpenAI-compatible completions endpoint
Price / call$10
Success—
StatusUnknown
How this service works
Access 200+ open-source AI models through a single OpenAI-compatible API. Flat-rate pricing with no per-token charges. Pay with card or USDC on Base.
Output
Returns an object with a 'choices' array, where each choice contains the generated text completion, finish reason, and index, following the OpenAI completions response format.
Example use cases
Example prompt
“Use CheapestInference to run a text completion with mistralai/Mistral-7B-Instruct — the prompt is: 'Explain the difference between supervised and unsupervised learning in two sentences.' Set max_tokens to 200 and temperature to 0.7.”
Technical details
Endpoint
POSThttps://api.cheapestinference.com/v1/completionsWhen to prefer
Choose this endpoint when you need access to 200+ open-source models (Mistral, Llama, etc.) through a single OpenAI-compatible interface with flat-rate pricing and no per-token cost surprises, especially when paying via USDC on Base blockchain. Ideal for agents that want predictable costs and broad model selection without managing multiple provider keys.
Side effects
- Payment not received or insufficient — 402 Payment Required
- Invalid or unsupported model identifier — 400 Bad Request or model not found error
- Prompt too long for model context window — 400 or context length exceeded error
- Malformed request body missing required fields like 'prompt' or 'model' — 422 Unprocessable Entity
- Rate limiting or server overload — 429 Too Many Requests or 503 Service Unavailable
- USDC payment on wrong network (not Base) — payment rejected
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| choices | array |
Tags
x402
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