Free Tier
Try the gateway without credits. Free tier restricts to cheap, fast models with daily request limits.
Limits
| Tier | Daily limit | Rate limit |
|---|---|---|
| Anonymous (no auth) | 5 req/day | 10 req/min |
| Authenticated (zero credits) | 20 req/day | 30 req/min |
| Paid (any credits) | Unlimited | 60 req/min |
Allowed models
Free tier requests can use:
| Model | Provider |
|---|---|
gpt-4o-mini | OpenAI |
claude-3-5-haiku-20241022 | Anthropic |
llama-3.1-8b-instant | Groq |
llama-3.2-1b-preview | Groq |
llama-3.2-3b-preview | Groq |
gemini-2.0-flash-lite | |
cerebras/llama-3.1-8b | Cerebras |
deepseek-chat | DeepSeek |
Blocked models
These models require credits:
- OpenAI reasoning: o1, o3, o4 (all variants)
- OpenAI flagship: gpt-4o, gpt-4, gpt-5 (gpt-4o-mini is allowed)
- Anthropic flagship: claude-opus, claude-sonnet (haiku is allowed)
- Google flagship: gemini-2.5-pro, gemini-2.5-ultra
- xAI flagship: grok-2, grok-3
Requesting a blocked model without credits returns 402:
{
"error": {
"message": "Model \"gpt-4o\" requires credits. Free tier models: gpt-4o-mini, llama-3.1-8b-instant, gemini-2.0-flash-lite, deepseek-chat. Add credits or use a free tier model.",
"type": "insufficient_funds",
"code": "free_tier_limit"
}
}Response headers
Free tier responses include remaining quota:
X-Free-Tier-Remaining: 3
X-Free-Tier-Limit: 5