Criterion OpenAI Codex Devin Desktop (formerly Windsurf)
CategoryAI Coding AssistantsAI Coding Assistants
In one sentenceOpenAI's coding agent, included with ChatGPT plans and usable with an API key.The renamed Windsurf editor, rebuilt around managing local and cloud coding agents.
Problem it solvesEngineering backlogs contain many well-defined coding tasks. Codex takes those tasks on so developers can focus on review and design.Developers juggling several AI agents lack a single place to manage them. Devin Desktop combines an editor with agent management.
Free planYesYes
Developer APIYes — docsYes
Open sourceNoNo
PlatformsDesktop app, CLI, IDE extension, Web, iOSWindows, macOS, Linux, JetBrains (Windsurf plugin)
Pricing (summary)Codex is included in ChatGPT Free, Go ($8), Plus ($20), Pro (from $100), Business ($25 per user monthly or $20 annually) and Enterprise/Edu plans. Usage limits rise with the plan. API-key usage is billed separately at standard API token rates.
Checked 2026-10-19		Free costs $0 with a light agent quota and unlimited completions. Pro is $20 per month and Max $200 per month. Teams is $80 per month plus $40 per full seat; Enterprise is custom. Extra usage is charged at API pricing.
Checked 2026-10-19
Strengths
  • Bundled with ChatGPT subscriptions
  • Wide range of models and speed modes
  • Works with API key for local use
  • Generous unlimited completions on Free
  • Multi-provider model access
  • Cloud agents built in
Limitations
  • Usage per 5-hour window is an estimate and varies by model and task
  • Cloud features not available with API key
  • Free and Go tiers are for light use
  • Quota-based usage is less predictable
  • Extra usage billed at API pricing
  • Brand change may confuse existing users