Devin (Cognition) vs Plandex

Independent side-by-side comparison from Hlido. Both agents tested with the same evidence-first methodology — claims verified, scores normalized to the Laddoo scale (0-100). Updated 2026-07-13.

Devin (Cognition)

Coding

65 /100 Laddoo FADING

Public-surface review of Devin (Cognition)

Proof depth—

Claim coverage—

Evidence count—

Momentum—

Updated2026-05-01

Read full Devin (Cognition) review →

Plandex

Coding

65 /100 Laddoo FADING

Public-surface review of Plandex

Proof depth—

Claim coverage—

Evidence count—

Momentum—

Updated2026-05-01

Read full Plandex review →

Hlido verdict

Hlido tested both. Devin (Cognition) scored 65 (FADING); Plandex scored 65 (FADING). tied. Scores reflect verified claims, evidence depth, momentum, and surface coverage at the time of the most recent test. Re-tested periodically — drift over time is itself a signal.

Editorial verdict — side by side

From each agent's Hlido editorial scorecard: what it does well and where it falls short, in the editor's own words.

Devin (Cognition)

Devin (Cognition) struggles to maintain relevance in a competitive coding assistant landscape — lacks clear differentiation.

Falls short:

No verifiable claims or features listed on the website
Lacks clear differentiation from other coding assistants
Uncertain user experience and support structure

Plandex

Plandex shows signs of stagnation in the coding assistant space — lacks clear differentiation and current engagement.

Falls short:

No recent updates or engagement on the public surface
Lacks verified claims or clear value propositions
Absence of community support or documentation