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HAL-XTHX-02 Free API TierModel APIs

Free keyless API access to THX-01 and THX-02; THX-02 limited to 60 decisions per minute per IP

HAL-X hosts THX-02, an open-weight decision model for choice, yes/no and score questions with calibrated probabilities. Its free tier serves THX-01 and THX-02 without an API key, limited per client IP (60 decisions per minute for THX-02).

LiveVerified Nov 5, 2026 against the official page

Who qualifies
Anyone - no signup or API key required for the free per-IP tier
How to claim
POST to https://api.hal-x.ai/v1/decide (or /v1/systemone) without an Authorization header; set model to thx-02 for THX-02. Docs: https://api.hal-x.ai/docs/thx-02. Optional: pip install thx02.
Expiry
ongoing

Heads up. Free tier is per client IP; THX-02 is 60 decisions per minute (each question counts). Over limit returns 429. Higher limits need a HAL-X API key.

Timeline 2

  1. Changed

    Set category to Model APIs from official THX-02 decision API docs. Set last_verified from Verifier check. Source

  2. Launched

    Added to that.promo Source

Posts 1

Official sources

Added Nov 5, 2026 · Updated Nov 5, 2026, 17:57 UTC

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