OpenAI-compatible AI gateway

Frontier answers,
without the frontier bill.

Tīrtha routes every request to the cheapest model that can actually solve it, verifies the answer, and escalates only when it has to. Same quality. A fraction of the cost.

Drop-in. Change one line: your base URL.

app.py
# one line. every model. lowest cost that still gets it right. client = OpenAI( base_url="https://api.tirtha.ai/v1", api_key="sk-tirtha-•••••", )
3.4× cheaper
vs. always-frontier
+15pts
on hard problems
3.4×
cheaper, hard tasks
30→45%
cheap solve rate
~0¢
per cache hit
1 line
OpenAI drop-in
How it works

The cheapest model that can do the job. Every request.

Not a single model behind a logo. A cascade that spends the least to get a right answer, and learns so it spends even less next time.

Route

Cascade routing

Each request starts cheap. Tīrtha escalates to a stronger model only when the answer needs it — never by default.

Verify

Checked, not guessed

Every answer is run and tested before it returns. Low confidence triggers escalation; you never pay frontier prices for a guess.

Cache

Solution cache

When the frontier solves something hard, that verified answer flows down. The next time, the cheap tier just serves it.

One endpoint

Every model, one bill

Swap your base URL and keep your code. OpenAI, Anthropic, open models — Tīrtha picks per request, you keep one integration.

Compounds

Better the more you run it

Every hard problem the frontier solves becomes a cheap answer forever. Speed climbs and cost drops with use.

Fast

Low latency

Cache hits return instantly. Cheap-tier-first means most requests never wait on a big model.

Private

Your keys, your data

Bring your own provider keys. Requests are routed, not retained.

Visible

Full visibility

Spend, savings, cache-hit rate and escalations per route — the numbers, live.

Drop-in

Switch in under a minute.

No rewrite, no SDK lock-in. Point your existing OpenAI client at Tīrtha and you're routing through the cascade. Keep your prompts, your tools, your code.

Read the quickstart
# before base_url="https://api.openai.com/v1" # after base_url="https://api.tirtha.ai/v1" # that's the whole change.

Stop overpaying for tokens.

We're onboarding a few at a time while we harden the product. Tell us what you're building.