Birth Chart vs Grok API
Two Artificial intelligence APIs with a free plan, compared field by field.
| Birth Chart, Character Analysis & Daily Horoscope | Grok API — direct access | |
|---|---|---|
| Endpoints | 4 | 5 |
| Latency | — | — |
| Service level | — | — |
| Free tier | $0.00 | $0.00 |
| Paid from | $9.99 | $19.99 |
| Updated | 2025-11-26 | 2026-05-26 |
Birth Chart, Character Analysis & Daily Horoscope
The astrology stack in one API. Given a birth date, time, latitude, longitude and timezone, the calculation endpoint returns the position of every planet — sign, degree and longitude — together with the houses and the ascendant. That is the raw chart, computed rather than described.
The analysis endpoint reads that chart back as prose: personality traits, strengths, tensions and the interplay between sun sign and ascendant, in the language you request. The horoscope endpoint produces daily, weekly and longer-horizon readings for the same chart, so a product can show a fresh page every morning without storing anything but the birth data.
A today's-chart endpoint returns the current sky with no input at all, which is what you want for a general daily horoscope page.
Grok API — direct access
A REST endpoint onto Grok with no wrapper prompt and no added filtering of its own.
It is aimed at developers who want the model's own behaviour rather than a vendor's interpretation of it.