EvaligoDescribe your agent. Ship the best-performing version.
Tell Evaligo what you want your agent to do (bring test data if you have it). We generate three variants, build validators and synthetic tests, and score them with an LLM judge — so you ship the winner, then download the spec and run it anywhere.
From a sentence to a tested, shippable agent
No notebooks, no eval harness to wire up. Describe the agent — Evaligo does the testing.
Describe your agent
Write the task in plain language. Upload a few test cases if you have them — or let us synthesize them for you.
We generate 3 variants
Different prompting and structure strategies, each with auto-built validators and a synthetic test set.
Score with an LLM judge
Every variant runs against the tests — accuracy, faithfulness, format and tool-call success, side by side.
Ship the winner
Download the winning spec and run it in your own stack. Come back anytime to add data and re-optimize.
Optimization, not guesswork
3 variants, auto-generated
Genuinely different strategies — not the same prompt reworded — so the comparison is real.
Validators included
Accuracy, faithfulness, format and tool-call checks built for your task, editable when you want control.
Synthetic test data
Start with zero uploads — we generate a representative test set, so there’s nothing sensitive to share.
LLM-as-judge scoring
Every variant scored on the same rubric, so the winner is earned, not a hunch.
Re-optimize on new models
When GPT-5 or Claude 4.x lands, re-run and see if a better variant appears — no rebuild.
Download the spec — no lock-in
Leave with the prompt, config and validators and run it anywhere. You’re never trapped in our runtime.
Optimizes around the tools your agent actually calls
Your agent uses tools — Evaligo optimizes with them in the loop. Missing one? Ask for it in a click; popular requests get built first.
Tell us what your agent calls — it helps us prioritize what to build next.
We’d been hand-tuning the same agent for two weeks. Evaligo handed us a variant that scored 13 points higher in an afternoon — and we just downloaded the spec and shipped it.
Questions, answered
Do I need to install anything?
No. Evaligo is fully hosted — describe your agent in the browser and go. There’s nothing to deploy or run locally.
Do you store my prompts or data?
Synthetic test data by default, so you can try it without sharing anything sensitive. Bring your own model key; we process ephemerally, never train on your data, and you can delete it anytime.
What exactly do I get?
A scored, side-by-side comparison of three variants and a downloadable spec — the prompt, config and validators — that you run in your own stack. No lock-in.
Which models can I optimize against?
The major providers, and you can re-optimize whenever a new model ships to see if a better variant appears.
What if my tool isn’t supported?
Request it right on this page. We prioritize integrations by demand, so popular requests get built first.
Stop tuning your agent by hand
Get early access and let Evaligo find — and prove — the best-performing version of your agent.