00Compare every model

The right model.
In seconds,
not hours.

Run any prompt across GPT, Gemini, Claude, and Grok at once. The Model Council synthesizes every response, flags contradictions, and recommends a winner — with its reasoning visible.

Supported modelsGPT-4.1GPT-4oGemini 2.0Claude 3.7Grok-3+ more as they ship
01Compare

One prompt. Every model.

Paste your prompt once. AI Side by Side fires it simultaneously across all selected models and streams results in real time — no tab-switching, no copy-pasting.

prompt

“Explain how RLHF works to a senior engineer.”

GPT-4.1
Gemini
Claude
Grok
02Synthesize

The Council reads everything.

The Model Council AI reads all four responses simultaneously. It surfaces where every model agrees, where one stands out, and where they contradict each other outright.

synthesis

Consensus — 4 of 4 agree on core mechanismUnique — Claude added reward hacking caveatsContradiction — 2 models detected
03Decide

Recommended. Explained.

The Council names a winner and shows its reasoning. You can accept the recommendation or dig into the full synthesis — the choice stays yours.

recommendation

Claude — best for this prompt.

Deepest coverage of reward hacking and fine-tuning tradeoffs. Uniquely flagged KL divergence constraints.

View Synthesis →
04Model Council

Not just comparison.
Honest synthesis.

The Model Council doesn't average responses or pick the most popular answer. It surfaces genuine disagreement, elevates minority insights, and names contradictions plainly. Upgrade to Pro to unlock the full synthesis.

Try Model Council
Synthesis2 contradictions
Consensus

All four models agree on the core RLHF training loop.

Unique insight

Claude — only model to flag divergence from human feedback over long training runs.

Contradiction

GPT and Grok disagree on whether reward hacking is a training-time or inference-time risk.

Recommended: ClaudeFull synthesis →
05Why it matters

Built for developers who value their time.

Efficiency

1 promptvs 4 browser tabs

Stop tabbing between ChatGPT, Claude, and Gemini. One input field runs across every model you select — simultaneously.

Cost transparency

$0.0089total · 4 models

See token count, latency, and exact cost for each model before committing to an API. No hidden overhead — just the raw numbers.

Speed

< 30sfull evaluation cycle

From prompt to synthesized recommendation in under a minute. What used to take an afternoon of testing collapses into a single run.

06Pricing

Start free. Upgrade when you need the full picture.

Free

$0/month
  • Compare up to 3 models concurrently
  • Real-time output streaming
  • Cost and latency per model
  • Limited daily queries
Get started free

Pro

Recommended
$15/month
  • All models concurrently — GPT-5.2, Claude 4.5, and new releases
  • Full Model Council synthesis + winner recommendation
  • Contradiction and unique-insight detection
  • Higher rate limits
  • Saved comparison history
Start Pro

Stop guessing which model wins.
See for yourself.

Free to start. No API key required. Results in under a minute.

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