Coding Assistants
Codex vs Windsurf.
Both sit in Coding Assistants, scored on the same six pillars from the same published methodology. Here is where they actually differ.
The short answer
Codex scores higher — 85.3 against 81.6, a margin of 3.7 points. That is the overall answer, not the whole one: the pillar breakdown below is where the decision usually actually gets made.
Codex leads on momentum and integrations & ecosystem.
OpenAI
85.3
Excellent
OpenAI's autonomous software-engineering agent.
- From
- Included with ChatGPT Plus / Pro
- Pricing
- Subscription
- Maturity
- Established
- Founded
- 2025
Cognition
81.6
Strong
Agentic IDE with Cascade flows, now part of the Devin family.
- From
- Free / $15 per month (Pro)
- Pricing
- Freemium
- Maturity
- Emerging
- Founded
- 2021
Pillar by pillar
The same six pillars and fixed weights used for every tool on the site. A lead of fewer than 5 points is not called for either side — these are evidence-backed judgements, not measurements. Read the methodology.
Capability
Level
Value for Money
Level
Security & Compliance
Level
Integrations & Ecosystem
Codex by 5
Maturity & Reliability
Level
Momentum
Codex by 10
Which one, and when
Pick Codex if
- →where the product will be in a year matters as much as today — it leads Momentum by 10 points.
- →it has to fit the stack you already run — it leads Integrations & Ecosystem by 5 points.
- →Delegating well-scoped engineering tasks
- →ChatGPT-subscribed developers
- →Parallel background coding work
The catch
- Younger than incumbent coding assistants
- Best experience requires ChatGPT paid plans
Pick Windsurf if
- →Developers wanting an affordable agentic IDE
- →Teams exploring autonomous agents
- →Cascade-style flow coding
The catch
- Acquisition transition created roadmap uncertainty
- Smaller community and ecosystem than Cursor or Copilot
What each is good at
Codex
- ✓Delegated tasks: writes code, runs tests, opens PRs
- ✓Backed by OpenAI's strongest coding models
- ✓Parallel task execution in cloud sandboxes
Windsurf
- ✓Cascade agent keeps strong long-session codebase context
- ✓Aggressive pricing relative to capability
- ✓Backed by Cognition's autonomous-agent research
Other comparisons in Coding Assistants
Comparing something else? Build your own side-by-side across any tools in the catalog.