Affordable AI API gateway for frontier models at up to 89% below official pricing
Pick your AI model based on evaluation results, not intuition
Stage
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Founded
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Based in
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US
Pricing model
Paid
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Pricing
Pay per million tokens in USD with no subscription or minimum spend. Prices vary by model and provider. Example flagship models: Claude (from $5.9/$29.5 input/output per million tokens), GPT-6-Astra (from $0.175/$0.875), Claude Opus (from $0.0125/$0.0625). Prompt caching at 10% of input rate where s
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Key features
OpenAI-compatible endpoint
Access to 171 frontier models
Automatic failover across upstream providers
Per-token billing from upstream usage reports
Full SSE streaming passthrough
Per-key rate limits and model allowlists
Complete usage logs with cost breakdown
Anthropic Messages API support
Prompt caching at 10% of input rate
Health tracking per provider family
Automatic model routing based on evaluation results
GitHub repository integration for eval workflows
Stores evidence of evaluation results
Automatic re-evaluation when new models are released
Dashboard for monitoring routes
MCP server integration with ChatGPT, Claude, and Cursor
Configurable evaluation checks and criteria
What makes it different
Single API key for 171 models across 19 families with no per-provider signups
Up to 89% savings below official pricing on frontier models
Automatic failover ensures requests route around capacity outages
Pay only for tokens consumed with no monthly subscription or minimum spend
Exact billing metered from upstream usage, never estimated from characters
Test your own LLM applications against real models automatically
Routes requests to the best-performing model in real time
Automatically updates routing when new models are released
Keeps your eval results and configurations under your control
AtmoRouter
BenchRouter