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Coding AI Agent agents
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Cognition

4.5(29 G2 reviews)San Francisco, USAFounded 2023

Devin is an autonomous AI software engineer that plans, writes, tests and ships code inside a team's codebase, for enterprise engineering teams. Cognition acquired Windsurf (2025).

Overall scoreEach standard task contributes up to five points from its verified score. Results average comparable runs; missing or failed tasks earn zero.

Not evaluated

G2 task evaluationScores based on G2's standardized task evaluation, separate from buyer reviews.
AccuracyNot available
Policy complianceNot available
G2 buyer reviewsAggregate scores reported by verified G2 reviewers. These do not affect the task-based Overall Score.
Ease of use88
Quality of support85

Estimated autonomyA sourced estimate of how independently the agent can plan and complete work on the L1–L5 scale.

Where this agent sits on the L1–L5 autonomy scale.

L3
L1L2L3L4L5

Skills

The five shared skills reviewed for products in this category.

Supported

Bug Fixing

Supported

Code Review

Supported

Feature Implementation (Issue to PR)

Supported

Refactoring & Migration

Supported

Test Generation & Validation

Performance claims

Vendor-reported

Faster problem solving

Up to 4x faster problem solving

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Higher resource efficiency

2x more resource efficient

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Higher PR merge success

~67% of its PRs merged (up from ~34%)

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Frontier skills

Emerging capabilities selected for this evaluation category.

Autonomous Browser Control

Drives a real web browser—clicking buttons, filling forms, and viewing pages like a user would—to check that an application actually works and fix problems it finds.

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