Workday Illuminate vs Sierra AI
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Workday Illuminate
Flex-Credit AI agents across Workday HR and Finance
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Sierra AI
Branded AI agents for customer experience
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| RECATOOLS Score | 7.3 / 10 | 7.2 / 10 |
| Capability | — | |
| Value for money | — | |
| Ease of use | — | |
| ASEAN readiness | — | |
| API quality | — | |
| Pricing | Enterprise | Enterprise |
| Free tier | No standalone free tier; Flex Credits allotment included with every subscription | — |
| Paid from | Custom enterprise pricing, roughly ~$34 PEPM base + Flex Credits | — |
| Has API | ✓ | ✓ |
| Open source | ✗ | ✗ |
| Free to use | ✗ | ✗ |
| Users | — | More than 40% of the Fortune 50 as customers; company reported more than $150M ARR as of early 2026 |
| Founded | 2005 | 2023 |
| Maker | Dave Duffield, Aneel Bhusri | — |
| Verdict | Illuminate's clearest win is pricing legibility. Flex Credits, introduced September 2025, replace opaque per-agent SKUs with one fungible pool applied across any agent or platform feature and billed per action — 1 credit... |
Sierra builds bespoke, action-taking AI agents for enterprise customer service — resolving issues, processing cancellations, handling upsells — with deep systems integration and strong guardrails. The May 2026 raise ($95... |
| Full review → | Full review → |
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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.