# Services from ask-session.withzero.ai on Zero

> ask-session.withzero.ai serves 4 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/ask-session.withzero.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/ask-session.withzero.ai/health.json

## Services

- [Ask Session – Parallel Multi-Model LLM Runner](https://www.zero.xyz/c/ask-session-withzero-ai-ask-session-parallel-multi-model-llm-runner-3ef0a2ef/llms.txt): $0.02/call via MPP. Runs a single prompt against up to 5 LLMs in parallel and returns all responses, token counts, latencies, and costs in one call
- [List Supported AI Models with Pricing](https://www.zero.xyz/c/ask-session-withzero-ai-list-supported-ai-models-with-pricing-81c46168/llms.txt): price not listed via MPP. Returns a list of supported AI models with per-million-token input/output costs and an estimated per-call cost based on 500/500 token assumptions with a 50% margin.
- [GET /contract — Ask-Session Contract Info](https://www.zero.xyz/c/ask-session-withzero-ai-get-contract-ask-session-contract-info-f0f0357c/llms.txt): price not listed via MPP. Returns the contract or terms metadata for the ask-session.withzero.ai multi-model prompt service
- [GET / — ask-session.withzero.ai Root Endpoint](https://www.zero.xyz/c/ask-session-withzero-ai-get-ask-session-withzero-ai-root-endpoint-536abefd/llms.txt): price not listed via MPP. Returns the root landing or service-info response for the ask-session.withzero.ai multi-model LLM session API

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)