OpenAI-compatible ยท Hosted ยท Free-tier first

One API. 5 providers.
0 keys. 57 models. Pay $0.

AI Fusion aggregates free-tier API access across Groq, Cerebras, OpenRouter, Gemini, and more โ€” behind a single OpenAI-compatible endpoint. Drop-in replacement, automatic failover, live progress streaming.

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5 providers
0 rotating keys
57 models
$0 baseline cost

Drop-in compatible

Point any OpenAI-style client at https://ai.viktorarsov.com/v1. That's the entire migration.

# Stream a chat completion across the spiral
curl https://ai.viktorarsov.com/v1/chat/completions \
  -H "Authorization: Bearer afp_live_โ€ฆ" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gateway:fast-free",
    "messages": [{"role": "user", "content": "Hello, fusion."}]
  }'

Built for production free-tier routing

Three things every serious gateway needs. We ship all three.

Spiral routing

Automatic failover across providers and keys. Atomic Redis allocation, daily cooldowns, midnight resets โ€” never see a 429 again.

Live progress streaming

SSE updates as the gateway hops keys and retries. Watch attempts, latencies, and which key answered โ€” in real time.

BYOK + savings tracking

Bring your own keys per tenant. We meter every request against retail prices and report your savings versus going direct.

Pricing

Records-only billing today. Free tier never expires.

Free

Perfect for personal projects and getting started.

$0 / mo

  • 10000 requests / month
  • 5000000 tokens / month
  • 60 requests / minute
  • Access to all 5 free providers
  • 10K requests/month
  • 5M tokens/month

Pro

For production workloads requiring scale.

$50 / mo

  • 1000000 requests / month
  • 500000000 tokens / month
  • 1500 requests / minute
  • 100x higher quotas
  • Hedged routing
  • SLA support
  • Custom guardrails
  • Webhooks