Every request runs through your model and a cheaper one that was adjusted using our patent-pending technology. We show you side by side the responses from both. With one click, get better results for less spend.
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Blind judge is comparing, names hidden, order swapped…
We prove it on a sample of your prompts, free. Up to 10 prompts, no credit card. You pay only after you switch.
Works with the OpenAI and Anthropic SDKs you already use
Bring your own keys from OpenAI, Anthropic, Google, xAI, Groq or Together AI
Change the base URL, add your key, done. Your traffic keeps running on your current model, untouched, while we build the proof.
1 import anthropic
2
3 client = anthropic.Anthropic(
4 api_key="sk-pl-...",
5 base_url="https://api.paritylayer.com"
6 )
7
8 # Everything else stays exactly the same.
9 # Your prompts. Your tools. Your code.Routers guess from benchmarks and price lists. We prove, per prompt, on your prompts, before a single request moves.
STAGE 01 / 04
Every request goes straight to your AI provider.
You pay full price on every call. No alternatives tested. No data on what else might work. This is where every AI-native team starts, and where most stay.
STAGE 02 / 04
Two lines. Parity now sits in the middle.
We forward every request to your baseline provider, same model, same output. Nothing changes for your users. No prompts rewritten, no schemas touched.
STAGE 03 / 04
A cheaper model generates equal or better output, behind the scenes.
In parallel, Parity uses our patent-pending process to get a cheaper model to generate equal or better outputs than your original model. Nothing about your live traffic changes. This runs behind the scenes. Zero risk.
STAGE 04 / 04
You set the thresholds. When they're hit, we flip the route.
You define the proof and confidence thresholds for each prompt. Once achieved, for example 95% confidence and 100+ matches, we automatically switch to the specialist model, maintaining quality while reducing cost by 30-60%. If quality drops, we immediately fall back to your baseline.
STAGE 01 / 04
Every request goes straight to your AI provider.
You pay full price on every call. No alternatives tested. No data on what else might work. This is where every AI-native team starts, and where most stay.
STAGE 02 / 04
Two lines. Parity now sits in the middle.
We forward every request to your baseline provider, same model, same output. Nothing changes for your users. No prompts rewritten, no schemas touched.
STAGE 03 / 04
A cheaper model generates equal or better output, behind the scenes.
In parallel, Parity uses our patent-pending process to get a cheaper model to generate equal or better outputs than your original model. Nothing about your live traffic changes. This runs behind the scenes. Zero risk.
STAGE 04 / 04
You set the thresholds. When they're hit, we flip the route.
You define the proof and confidence thresholds for each prompt. Once achieved, for example 95% confidence and 100+ matches, we automatically switch to the specialist model, maintaining quality while reducing cost by 30-60%. If quality drops, we immediately fall back to your baseline.
No live traffic to share yet?
Upload a sample of your past requests, a JSONL export, and we'll prove a cheaper model matches your results before you change a single line of code.
Every prompt gets a verdict: the cheaper model's answer next to your model's, judged same, better, or fail. Only prompts that pass ever switch.
Every response is validated against your exact format before delivery, and anything off falls back to your baseline. Click any request in the dashboard and check the judgement yourself.
Per prompt
Verdicts before any switch
Instant
Fallback to your baseline
Every request
Inspectable in the dashboard
Drag the slider to your monthly AI spend. Proven prompts are billed at the cheaper model's rate, typically 30 to 60% below what you pay now.
What do you use AI for?
Currently paying
$25,000/mo
With Parity Layer · 60% off
$10,000/mo
Save $15,000/mo · $180,000/year
Category averages are typical customer outcomes. Your actual savings depend on your prompts.
If you run the same prompts thousands of times a day behind a product, a support tool, or a pipeline, that is the bill we cut.
Running Claude or GPT behind product features? Parity Layer finds proven alternatives at 30-60% less cost. Your users never notice. Your margins improve overnight.
Support assistants, pipelines, summarizers. High-volume, repeatable workloads deliver the biggest savings. Better results for 30-60% less.
$5K/month on AI APIs and growing fast? Proven prompts bring that to roughly $2-3.5K. Same quality or better, and the savings compound as you scale.
Hundreds of prompts across dozens of teams. One gateway with full visibility into spend, performance, and savings. Custom SLAs available.
For each prompt we pick the cheapest specialist from a bank of hundreds and prove it before it serves a single request. Every comparison is stored so you can check our work whenever you like.
Your baseline model is always the fallback. Parity Layer only switches after the cheaper model proves it matches or beats your baseline on your own prompts. Never worse.
Automatically tests candidates to find the cheapest one that matches your specific prompts. You don’t pick models. It does.
Learns your exact response format and validates every response before delivery. Any deviation triggers instant fallback.
Works with any OpenAI or Anthropic SDK. Python, TypeScript, Go, Ruby, or raw REST. Change the base URL, deploy, done.
See every comparison side-by-side. Track savings by prompt, model, and day. Click any request to verify quality yourself.
Switched prompts stay under audit. If quality ever drifts from your baseline, requests revert to your original model automatically.
Pricing
Per request, per token. You only pay the new (lower) cost per token for the models we've already proven can handle your prompts.
Try Parity free on up to 10 prompts. We optimize cheaper models against each one and prove the result on your own traffic. You pay nothing to see it, no credit card required.
Once a prompt is proven, we route it to the cheaper model. You pay per-token at the new rate, 30-60% less than your baseline cost.
Need custom SLAs, on-prem deployment, or SSO? Contact us for enterprise
Routers pick models from benchmarks and price lists, so you are trusting someone else's tests. We prove parity per prompt, on your prompts, with your own model as the judge, before a single request is rerouted.
We first measure how consistent your own model is with itself, then a cheaper model has to match or beat that bar on your real requests, prompt by prompt. You see every verdict before you activate anything.
Then Parity Layer does not switch. Your original model continues to serve every request. Switches only happen after rigorous verification. If quality ever drifts after a switch, Parity Layer automatically reverts to your original model.
About 5 minutes. Change your base URL and API key, two lines of code. Parity Layer is compatible with any OpenAI or Anthropic SDK. No new libraries, no prompt changes, no breaking changes.
Parity Layer works as a gateway for all major LLM providers. Bring your own key from Anthropic, OpenAI, Google, xAI (Grok), Groq, or Together AI. Parity Layer automatically finds a more cost-effective equivalent for each of your prompts.
Your requests go to providers on your own keys. We store the prompts and both models' responses to power your side-by-side audit trail, so you can go back and verify any verdict. Enterprise customers can deploy Parity Layer in their own VPC for full data isolation.