AI21 Jamba2 vs Devin

Which one should you pick? Here's the full breakdown.

Our Pick

AI21 Jamba2

A
8.0/10

AI21 Labs' hybrid SSM-Transformer (Mamba-style) open-weight family -- Jamba2 launched 2026-01-08. Two sizes: 3B dense (runs on phones / laptops) and Jamba2 Mini MoE (12B active / 52B total). Apache 2.0, 256K context, mid-trained on 500B tokens

Devin

B
7.4/10

The most autonomous AI coding agent -- Devin 2.2 (Feb 24 2026) adds desktop/GUI testing (Figma, browser automation), Devin Review (pull-request analysis catching ~30% more issues), and ~3x faster startup (~15s vs ~45s). Now embedded in Windsurf 2.0

Powered by Cognition proprietary orchestration over Claude / GPT / Gemini + Devin's own tuned components

CategoryAI21 Jamba2Devin
Ease of Use6.56.5
Output Quality8.08.0
Value9.07.0
Features8.58.0
Overall8.07.4

Pricing Comparison

FeatureAI21 Jamba2Devin
Free TierYesNo
Starting Price$0$20

Which Should You Pick?

Pick AI21 Jamba2 if...

  • ✓Better value for money (9/10)
  • ✓Has a free tier

Developers building long-context RAG systems (256K context with manageable memory is the sweet spot), mobile/edge deployments where Jamba2 3B's hybrid efficiency shines, and teams that want to experiment with non-transformer architectures while staying in Apache-2.0 territory. Also good for Israeli + EU enterprise procurement where AI21's geography / GDPR posture matters.

Visit AI21 Jamba2

Pick Devin if...

Development teams that want to offload well-scoped tasks like bug fixes, test writing, and boilerplate code to an autonomous agent. Best when the task description is detailed and specific.

Visit Devin

Our Verdict

AI21 Jamba2 edges out Devin with a 8.0 vs 7.4 overall score. Both are solid picks, but AI21 Jamba2 has the advantage in value.