One open network
for verifiable AI.
Ambient is a proof-of-work AI blockchain. Open models, served by a global network of independent GPUs, and every answer carries cryptographic proof of exactly which model produced it. No black box, no lock-in, no taking anyone's word for it.
When you call a closed AI, you're trusting a black box.
You send your prompt into a system you can't see. You can't check which model actually ran, whether it was quietly swapped for something cheaper, or what happens to your data once it's inside. You pay the invoice and hope the policy holds. With closed AI, trust is the only option you're given.
Proof of Logits: a receipt for every answer.
Before a model picks each word it produces logits: the raw numbers behind its choice. Ambient captures a cryptographic fingerprint of those logits and attaches it to the response. Anyone can check that fingerprint against the open model: match, and the answer is provably from the model you asked for; mismatch, and the proof simply fails. Verification is part of the network, not a fee.
Read the protocol paperCommit
Every node commits to the full logit distribution it produced, a fingerprint of the exact computation it can't fake after the fact.
Check
A decentralized verification network randomly re-runs and checks those commitments. That's where the ~0.1% overhead comes from.
Slash
A node caught swapping in a smaller or quantized model is removed and its stake is slashed. Cheating costs more than it could ever save.
An open market of GPUs, racing to serve you.
There's no single provider behind Ambient. Independent operators around the world run the models and compete to answer each request, and because every answer is verifiable, the only things left to compete on are speed and price. That competition drives cost down instead of up.
Verified. Open. Affordable. Private.
Verified by default
Every answer ships with Proof of Logits, not a paid add-on.
Open, never locked in
15 open models behind a drop-in OpenAI- & Anthropic-compatible API.
Frontier coding, far less cost
GLM 5.2 beats GPT-5.5 on SWE-bench Pro, and costs far less to run.
Private & pay-per-request
Zero data retention by default. Pay per call, including crypto via x402.
Frequently asked questions
Stop trusting your AI. Start verifying it.
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