96
/ 100 APIVault Score
// At a glance
Free Tier
50 req/min · 20 req/day free models · no card
Category
LLM
Credit Card
Not required
Last Verified
3m ago
// Free tier details
Available Models
100+ modelsseveral free
Monthly Requests
20 free requests/day (per model)
Rate Limit
50 requests/minute
No credit card needed
No phone verification
// Quick start
"text">-purple-400">curl https://openrouter.ai/api/v1/chat/completions \
"text-amber-400">-H "Authorization: Bearer YOUR_OPENROUTER_KEY" \
"text-amber-400">-H "Content">-Type: application/json" \
"text-amber-400">-d '{
"model": "meta-llama/llama-3.3-70b-instruct:free",
"messages": [{"role": "user", "content": "Hello."}]
}'// Overview
OpenRouter routes requests to every major LLM provider through a single OpenAI-compatible endpoint. The free tier rotates models and includes popular options like Llama 3.3 70B and several experimental models.
// Pros
- 100+ models through one API
- Many free model options
- No markup on pricing
// Cons
- Free model selection rotates
- No embeddings endpoint
// Score breakdown
Reliability (35%) (from 3m ago health check)100/100
Free Tier Generosity (30%) (computed from quota, no-CC, no-phone fields)100/100
Documentation (20%) (human rating)80/100
Popularity (15%) (GitHub stars (log-normalised), or manual baseline)98/100
Methodology: apivault.dev/methodology
// Best for
Model comparisonMulti-model appsFallback routing
// Recent changes
Jun 1, 2026Added Claude 4 Sonnetadded
May 10, 2026Free model pool updatedfree tier changed