Signup & key guides
From landing page to working API key in under 10 minutes — with the real limits and the gotchas the marketing pages skip. Facts marked “unconfirmed” are exactly that.
Cerebras Inference
Cerebras Inference — free tier setup
“Official rate-limits page (Free Trial tier, per model, fetched 2026-07-17): gpt-oss-120b / zai-glm-4.7 / gemma”
Cloudflare Workers AI
Cloudflare Workers AI — free tier setup
“"Our free allocation allows anyone to use a total of 10,000 Neurons per day at no charge." "Neurons are our wa”
Cohere
Cohere — free tier setup
“Official rate-limits docs: 'Trial keys (and prod keys on newer Chat model variants) are limited to 1,000 API c”
GitHub Models
GitHub Models — free tier setup
“Low models (Copilot Free/Pro): 15 requests/minute, 150 requests/day, 8000 in / 4000 out tokens per request, 5 ”
Google AI Studio (Gemini API)
Google AI Studio (Gemini API) — free tier setup
“Gemini 2.5 Flash: 250,000 tokens/minute, 20 requests/day, 5 requests/minute; Gemini 3.1 Flash-Lite: 250,000 to”
Groq
Groq — free tier setup
“llama-3.3-70b-versatile: 30 RPM, 1K RPD, 12K TPM, 100K TPD; llama-3.1-8b-instant: 30 RPM, 14.4K RPD, 6K TPM, 5”
Hugging Face Inference Providers
Hugging Face Inference Providers — free tier setup
“Free Users: $0.10 monthly credits, "subject to change"; PRO Users: $2.00; Team or Enterprise Organizations: $2”
Mistral La Plateforme
Mistral La Plateforme — free tier setup
“Limits (per-model): 1 request/second, 500,000 tokens/minute, 1,000,000,000 tokens/month (cheahjs README). mnfs”
NVIDIA NIM (build.nvidia.com)
NVIDIA NIM (build.nvidia.com) — free tier setup
“40 requests/minute (cheahjs); "Rate-limited (no daily token cap)" (mnfst); "~40 RPM" per model”
OpenRouter (free models)
OpenRouter (free models) — free tier setup
“20 requests/minute; 50 requests/day; up to 1000 requests/day with $10 lifetime topup. Models share a common qu”
OVHcloud AI Endpoints
OVHcloud AI Endpoints — free tier setup
“OVHcloud AI Endpoints offers a permanent free anonymous tier (2 requests per minute per IP, per model) with no”
Z.ai (Zhipu AI)
Z.ai (Zhipu AI) — free tier setup
“Permanent free models, no credit card required. Rate limit: 1 concurrent request (mnfst data.json). Z.ai prici”