Pay for AI models per request

Give your agents access to any LLM — OpenAI, Anthropic, Gemini, DeepSeek, Mistral, and more — without managing API keys, billing accounts, or usage limits. MPP lets agents pay per token with stablecoins on Tempo, and the model provider gets paid instantly.

The AI model payment problem

Every LLM provider requires a separate API key, billing account, and credit card on file. For a single developer this is manageable. For a fleet of autonomous agents, it's a bottleneck: each agent needs its own credentials, each provider has different billing cycles, and rate limits are tied to account tiers rather than willingness to pay.

How MPP enables paid AI model access

With MPP, your agent holds a stablecoin balance on Tempo and pays per request. No signup, no API keys, no invoices. The agent discovers the model's price via the 402 Challenge, pays with a stablecoin transfer or session voucher, and gets the response — all in a single HTTP round-trip.

Tempo Sessions are ideal for LLM access. The agent opens a payment channel once, then signs off-chain vouchers for each chunk of tokens received. The model provider verifies vouchers in microseconds — no blockchain calls during inference — and settles in batch later. This makes per-token billing practical without adding latency.

AI model services you can pay for

Try paid AI model access with Tempo

# Install Tempo CLI + wallet
curl -L https://tempo.xyz/install | bash && tempo add request && tempo wallet login
 
# Call OpenAI with pay-per-request — no API key needed
tempo request openai.mpp.tempo.xyz/v1/chat/completions \
  -d '{"model": "gpt-4o", "messages": [{"role": "user", "content": "Hello"}]}'

Prompt your agent to buy AI model access

Use openai.mpp.tempo.xyz to call GPT-4o via Tempo.
Pay per request with stablecoins — no API key needed.

Next steps for AI model payments