AI coding assistants , by Cognition AI , since 2024
Devin
Cognition's autonomous coding agent, now merged with the former Windsurf IDE
- DESKTOP
- WEB
- API
What Devin does
Devin is Cognition's autonomous "AI software engineer" that plans, writes, tests, and ships code across a session with minimal supervision. In 2026 Cognition folded the Windsurf editor into this product line as "Devin Desktop" -- windsurf.com and codeium.com now both redirect to devin.ai, and JetBrains support continues under the Windsurf name.
What you get: Autonomous multi-step agent, Integrated IDE (ex-Windsurf), Multi-model access, Enterprise API.
Typical jobs: Delegated engineering tickets; Combined IDE + agent workflow.
Worth knowing: EXCLUDED CANDIDATE: Windsurf was on the original candidate list but is no longer a standalone product -- windsurf.com and codeium.com (Codeium's own rebrand target) both permanently redirect to devin.ai as of Aug 2026, per Devin Desktop's own FAQ: 'Devin Desktop is the new name for Windsurf.' Devin/Cognition is listed here in its place since it is the surviving live brand covering the same IDE plus the agent product.
What users complain about: Author built an alternative agent-loop tool citing $15/month cost versus a $500/month Devin tier (GitHub (ralph-loops-public README))
Pricing and plan limits
Verified August 2026| Plan | Monthly | Annual (per mo) | Limits |
|---|---|---|---|
| Free | Free | n/a | Light quota to code with agents, limited model options |
| Pro | $20 | n/a | Increased quotas versus Free, exact ACU count not published |
| Max | $200 | n/a | "Significantly higher" quotas than Pro, exact ACU count not published |
| Teams | $80 | n/a | Base $80/mo plus $40 per additional user/month; unlimited team members |
| Enterprise | not disclosed | n/a | Custom quota and terms |
Where it wins
- One product now spans both an autonomous 'AI engineer' agent and a full IDE (the former Windsurf), reducing tool-switching
- Can work fairly independently on multi-step engineering tickets rather than only inline completions
Where it falls short
- Max plan at $200/month (and Teams at $80 base + $40/user) is expensive next to DIY agent-loop setups; one developer compared a self-built $15/month alternative to a $500/month Devin tier they had been quoted
- Usage is billed in opaque ACU (Agent Compute Unit) credits rather than disclosed request or token counts, making monthly cost hard to predict for both Pro and Max
How we scored it
Full methodology| Criterion | Weight | Score | Contribution |
|---|---|---|---|
| Capability | 30% | 8.0 | 2.40 |
| Value for money | 25% | 5.0 | 1.25 |
| Ease of use | 15% | 6.0 | 0.90 |
| Maturity | 15% | 6.0 | 0.90 |
| Support & docs | 10% | 6.0 | 0.60 |
| Momentum | 5% | 8.0 | 0.40 |
| Weighted total | 100% | 6.5 | 6.50 |
Alternatives to Devin
Chosen by editors, not sponsors-
LovableFreemiumClosest match on capability
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AiderFreeCheaper entry plan
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ClineFreemiumCheaper entry plan at $9.99/mo
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GitHub CopilotFreemiumCheaper entry plan at $10/mo
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