As of November 2026, this directory tracks 61 Codex AI companies. Hyperlink InfoSystem currently sits at the top of the list (5.0-star average from 497 verified reviews, $25 - $49 / hr, in business since 2011). Looking at the group as a whole, the midpoint hourly rate is $125, the median rating is 4.8, and 31% report a team of 50 or more. Most frequently listed specialties here include Mobile App Development, AI Development, Bot Development, and Web Development.
Every company on this page is evaluated on the same real signals: how clients have rated their work, what they charge per hour, how big their team is, and how long they've been in business. Clients rate these codex ai firms 4.9/5 on average. $100 - $149 / hr is the most common rate band. Roughly 31% of the companies listed report a headcount of 50 or more. Before reaching out to any shortlisted firm, it's worth cross-checking its review history and portfolio directly - every listing is manually checked (founding year, services, team size) and reviews go through a moderation step before they go live.
Compare the highest-ranked firms first side by side.
| Rank | Company | Rating | Reviews | Hourly Rate | Action |
|---|---|---|---|---|---|
| 1 | 497 | $25 - $49 / hr | Visit Profile | ||
| 2 | 8 | Undisclosed | Visit Profile | ||
| 3 | 6 | $25 - $49 / hr | Visit Profile | ||
| 4 | 6 | N/A | Visit Profile | ||
| 5 | 6 | $50 - $99 / hr | Visit Profile | ||
| 6 | 7 | N/A | Visit Profile | ||
| 7 | 7 | $25 - $49 / hr | Visit Profile | ||
| 8 | 6 | $150 - $199 / hr | Visit Profile | ||
| 9 | 6 | $25 - $49 / hr | Visit Profile | ||
| 10 | 8 | $50 - $99 / hr | Visit Profile |
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CO Pick 2 to 4 companies to compare their ratings, pricing, and team size.
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