Test AI models

// AI Cost Intelligence Platform

Cut your cost per inference
without dropping quality.

Paste your production prompt, test it against up to 20 models side by side, and see the cheapest one that still hits your quality bar. Most teams find a 3-10x cheaper model in under five minutes.

prompt.input
36 modelsNo API keysResults in 30 seconds
community

120+

engineers

registry

36

models available

benchmarks

490+

API calls in dataset

award

Best AI Use

Contra/Bubble award

// Why this matters

API costs are the silent margin killers for AI-powered products

cost drift

$1,090 wasted

monthly on single LLM step

Most AI teams set GPT-4o as the default model and never revisit it. One step running 100K times a month at $0.0112 instead of Grok at $0.0003 costs over a thousand dollars more - every month.

eval debt

5-10h lost

to manual model evaluation

Teams doing cost optimisation sprints manually test models by copying prompts into different playgrounds, noting results in spreadsheets, and trying to remember which run cost what.

model churn

6 weeks

Average model updates

The model landscape changes every 3–6 weeks. DeepSeek launched and made GPT-4o look expensive overnight. Most teams don't re-evaluate until the bill becomes a problem.

// The solution

One tool. 36 AI models. Real data.

Paste your production prompt, pick models, run them simultaneously, and get side-by-side data to decide which model to ship to production.

Test AI Models playground comparing models side by side
Playground

Single-step tests - cost & latency

Paste a production prompt, pick models, and run them in parallel. Every response includes token counts, latency, and estimated cost so you can compare side-by-side in seconds.

WorkflowsNew in v1.7

Multi-step workflow testing

Chain LLM steps like your agent does - pass output from one model as input to the next. Find which hop can move to a cheaper model without breaking quality on your real workload.

Vision

Image analysis comparison

Upload an image with your prompt and compare vision models on the same task. See quality, detail, and per-call cost across providers - not generic vision leaderboards.

BenchmarksPopulating

Community benchmark data

See which models win for each task type based on real tests run by engineers on the platform - aggregated from winner selections, not synthetic eval suites.

// How it works

Three steps from prompt to decision

Run tests for each LLM step in your product - single-step or multi-step workflows.

Create a new multi-model test

// Who we serve

Teams with real API volume

We focus on builders where model choice is a COGS decision. Inference is your COGS - most teams overpay on 60-80% of it because nobody tested the cheaper model on their actual prompts.

Software agencies

Ship AI features for clients and prove model choices with side-by-side cost data - not guesswork.

AI agent teams

Test multi-step agent workflows and find which hop can move to a cheaper model without breaking quality.

LLM product teams

Optimize high-volume production steps with real prompts, real latency, and real cost at scale.

// 36 models available

Compare flagship models from all major providers

New models added within days of release. Neutral testing - no provider bias.

// Vs alternatives

What you can't get anywhere else

One prevented integration mistake pays for itself many times over. Tracking tells you you're overpaying. We tell you exactly what to switch to - tested on your real prompt, quality verified, so the switch won't break anything.

Spend dashboards that only show which model you already overpaid on

Instead

Quality-verified switch on YOUR prompt

Generic benchmark tasks

Instead

Test YOUR prompts

Cached or pre-computed leaderboard results

Instead

Real API calls

No exact per-run API costs

Instead

See exact API costs

Research-only model comparisons

Instead

Pre-build and post-live validation

// Free tool

Estimate your API overspend in 30 seconds

See how much you could save by switching models on the steps that actually matter — then verify it with a free test on your real prompt.

Your inputs

$
75%
55%

Teams testing real prompts typically find 50–75% savings on optimizable steps. Run a free test to replace estimates with your numbers.

Estimated savings

$1,031 /mo

$12,375 per year · optimized bill $1,469/mo

// Testimonials

Teams cutting API costs with real data

What builders say after running their production prompts side by side.

We swapped one default model on a high-volume step and cut that line item by 72% - the test took 30 seconds, not a week of spreadsheets.

72% cost reductionLLM product

Engineering lead

B2B SaaS, 40k MAU

Client demos used to mean copying prompts into five playgrounds. Now we run the chain once, show the bill at 1M runs, and the margin conversation is easy.

$840/mo savedAgency

Founder

Software agency

Our agent has four LLM steps. Testing the whole workflow - not just the final reply - showed us exactly which step could move to a cheaper model.

4-step workflowAI agents

Head of AI

Agentic platform

// PRICING

Pay only for what you use

Start with daily free test. Top up when you need more. Upgrade to Pro when you're running enough tests to make the lower markup worth it.

FREE

$0forever

One real free test every day. Enough to explore the platform and get a feel for differences between models.

  • 1 free test every day (resets 00:01 UTC)
  • Up to 5 models per test
Start free

Pay as you go

Most flexible
$9min top-up

Top up when you need more tests. Credits roll over and never expire. Best if you test in bursts rather than daily.

  • Unlimited tests (credits deducted per run)
  • Up to 10 models per test
  • x3 markup on API credit purchases
Start with $9 credits

PRO

$19/monthly

Lower markup on every test plus more models per run. Better value once you're running tests regularly.

  • Unlimited tests (credits deducted per run)
  • Up to 20 models per test
  • x1.5 markup on API purchases
  • First access to new flagship models
  • Priority support
Start PRO

// FAQ

Common questions about model testing

Start cutting cost per inference

36 modelsNo API keysResults in 30 seconds