Merlin vs Devin Voice: Which is Better in 2026?
Choosing between Merlin and Devin Voice comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: Devin Voice wins this matchup. ChatGPT is our overall AI Assistants pick. ChatGPT is our free AI Assistants pick. Pick Merlin if you need a free tier to start with.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Merlin
Assign AI coding tasks to Claude and Codex from Slack, Linear, and GitHub
Best for you if:
- • Small teams collaborating with coding agents in Slack, Linear, and GitHub
- • You want assign AI coding tasks to Claude and Codex from Slack, Linear, and GitHub
Devin Voice
Converse with Devin, delegate tasks, and build a shared knowledge base
Best for you if:
- • You want hands-free interaction increases productivity and accessibility
- • You want knowledge centralizes team expertise and improves Devin's performance over time
| At a Glance | Merlin | Devin Voice |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | AI Assistants | AI Assistants |
Rating | - | 4.3/5G2 4.6 · PeerSpot 4.5 · Trustpilot 3.0 |
Free plan | Yes | Yes |
Watch out for | Requires separate Claude or Codex subscriptions billed additionally | n/a |
Choose Merlin or Devin Voice?
Choose Merlin if
Assign AI coding tasks to Claude and Codex from Slack, Linear, and GitHub
- Small teams collaborating with coding agents in Slack, Linear, and GitHub
- You want assign AI coding tasks to Claude and Codex from Slack, Linear, and GitHub
Choose Devin Voice if
Converse with Devin, delegate tasks, and build a shared knowledge base
- You want hands-free interaction increases productivity and accessibility
- You want knowledge centralizes team expertise and improves Devin's performance over time
| Feature | Merlin | Devin Voice |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | No ratings yet | ★4.3/5 9 reviews |
| Categories | AI AssistantsAI Agents | AI AssistantsAI Agents |
In-Depth Analysis
Merlin
Assign AI coding tasks to Claude and Codex from Slack, Linear, and GitHub
Merlin's Free tier is generous for small teams but limited to 1,000 requests and 5 users.
Watch out
Requires separate Claude or Codex subscriptions billed additionally
Key features
Devin Voice
Converse with Devin, delegate tasks, and build a shared knowledge base
Strengths
- +Hands-free interaction increases productivity and accessibility
- +Knowledge centralizes team expertise and improves Devin's performance over time
- +Flexible Knowledge organization with folders and macros
Weaknesses
- -Voice mode requires microphone access and may not suit noisy environments
- -Knowledge requires ongoing curation to stay relevant and accurate
Key features
Pricing: Merlin vs Devin Voice
| Plan | Merlin | Devin Voice |
|---|---|---|
| Tier 1 | 0 month Free | N/A |
| Tier 2 | 99 month Team | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Merlin pricing and Devin Voice pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Merlin
Want the highest-rated option?
Devin Voice is rated 4.3/5. Merlin has no ratings yet.
Go with: Devin Voice
Value user reviews?
Merlin: no ratings yet. Devin Voice: 9 reviews (4.3/5).
Go with: Devin Voice
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Both are ai assistants tools. Compare their specific features to decide.
How important are ratings?
Devin Voice is rated 4.3/5; Merlin has no ratings yet.
Key Takeaways
Devin Voice
- Free tier available
- Our pick for this comparison
Merlin
- Choose if you want assign AI coding tasks to Claude and Codex from Slack, Linear, and GitHub
The Bottom Line
Devin Voice wins this matchup. ChatGPT is our overall AI Assistants pick. ChatGPT is our free AI Assistants pick.
Frequently Asked Questions
Is Merlin or Devin Voice better?
Devin Voice is rated in our evaluation. Both are freemium.
What are Merlin and Devin Voice used for?
Merlin: Assign AI coding tasks to Claude and Codex from Slack, Linear, and GitHub. Devin Voice: Converse with Devin, delegate tasks, and build a shared knowledge base.
What does Merlin cost vs Devin Voice?
Merlin is freemium (free tier + paid plans). Devin Voice is freemium (free tier + paid plans). Visit their websites for detailed pricing.