Adept AI vs Mainframe
Which Agents AI tool is better in 2026?
Adept AI
AI that takes actions in any software
Mainframe
Building interfaces for the future where operating systems are built around actions, not apps, powered by AI.
Side-by-side
| Adept AI | Mainframe | |
|---|---|---|
| Tagline | AI that takes actions in any software | Building interfaces for the future where operating systems are built around actions, not apps, powered by AI. |
| Founded | 2022 | 2026 |
| HQ | San Francisco, US | — |
| Employees | 100-200 | 1-10 |
| Total funding | $350M | Undisclosed |
| Latest round | M&A · Jun 2024 | — |
| Valuation | $1B | — |
| Cheapest paid plan | — | Pricing not disclosed |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✗ |
| Top tier price | Enterprise · Contact sales | Pricing not disclosed |
| Pricing summary | 1 published plans | Enterprise · Contact sales |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Adept AI and Mainframe.
| Capability | Adept AI | Mainframe |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✓ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Adept AI
- Has raised more capital ($350M vs Undisclosed)
- Higher Neuron score (53 vs 28)
- More mature (2022)
- Verified profile
🔵 Strengths of Mainframe
- Newer company (2026)
Which should you choose?
Choose Mainframe if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both AI Agents tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Adept AI if you want the most established option — it has raised $350M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Adept AI vs Mainframe — which is better?
It depends on your priority. Adept AI has raised more capital and is the more established option; Mainframe has broader feature depth. See the side-by-side table above.
Is Adept AI cheaper than Mainframe?
No — Mainframe's cheapest paid plan is Enterprise · Contact sales, while Adept AI's is Enterprise · Contact sales.
Do Adept AI and Mainframe offer free plans?
Adept AI: Paid only. Mainframe: Paid only.
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