// Halo
Use Claude without a subscription — Opus, Sonnet & Haiku on Halo
Anthropic's Claude — Opus, Sonnet and Haiku — served peer-to-peer on Halo. No account, no subscription, pay only per prompt.
Claude is Anthropic’s model family — Opus for the hardest reasoning, Sonnet for the everyday balance, Haiku for speed. Reaching it normally means an Anthropic account and a plan, in a country Anthropic serves.
On Halo, independent operators serve Claude alongside 140+ other models, and you reach them directly.
No subscription — pay per prompt
Top up once with card or crypto and pay per prompt in USDC on Base. No monthly plan, nothing to cancel, and no paying for a month you barely used. Because operators compete for each request, prices are often among the lowest available for the model.
No account, no API key
There’s no Anthropic signup and no API key. Sign in with a social account and prompt. Nothing ties the conversation to a personal account with a provider.
Private by default, confidential on demand
Every request is end-to-end encrypted to the operator. For sensitive work, confidential mode seals the prompt inside a hardware enclave (TEE) that even the operator serving it cannot read — and the app checks the hardware attestation before it trusts the enclave.
Verifiable results
Each result carries a statistical proof of execution, so you can tell the real model ran rather than a cheaper substitute. The network rejects anything that fails the check.
Where to go next
Compare Claude directly against the alternatives: Claude vs ChatGPT, or try GPT-5 and Gemini on the same prompt. If Claude isn’t offered where you are, see the notes on access in China, Hong Kong and Russia.
Frequently asked questions
Can I use Claude without an Anthropic account?
Yes. Operators on Halo serve Claude, and you reach them through the network rather than through Anthropic. There's no Anthropic signup, no subscription and no API key — you sign in with a social account and pay per prompt in USDC on Base.
Which Claude models are available?
Operators serve the Opus, Sonnet and Haiku lines. Availability shifts as operators come online, and the app shows what's actually being served right now.
Is it cheaper than a Claude subscription?
For most people, yes — because you pay per prompt instead of a flat monthly fee. If you prompt heavily every day a subscription may still win; if your usage is occasional or bursty, paying only for the tokens you use is usually far cheaper.
Is my conversation private?
Your prompt is encrypted to the operator by default, so the relay routing it only ever sees ciphertext. With confidential mode it's encrypted to a hardware enclave (TEE) the operator can't read either, and your device verifies the hardware attestation before trusting it.