Codex vs Amp Code (by Sourcegraph): Side-by-Side Comparison 2026

Codex vs Amp Code (by Sourcegraph) comparison 2026. Side-by-side features, pricing & capabilities.

Codex is an AI agent and a CLI-based coding agent from OpenAI — asynchronous autonomous coding agent. Amp Code (by Sourcegraph) is an AI agent from Sourcegraph — agentic coding with full codebase context.

Codex🏆 Approved

OpenAI's autonomous coding agent. Available via web, desktop app (macOS), CLI (macOS/Linux/Windows), and VS Code extension.

  • ✓ Code completions
  • ✓ AI chat
  • ✓ Agentic mode
  • ✓ Multi-file editing
  • ✓ Terminal commands

Free / $8/mo · 6 plans

Amp Code (by Sourcegraph)

Amp Code (formerly Sourcegraph Cody Agent) — AI coding agent from Sourcegraph. Focuses on autonomous task execution across repositories. Cody continues to exist as a separate context-aware assistant.

  • ✓ Code completions
  • ✓ AI chat
  • ✓ Agentic mode
  • ✓ Multi-file editing
  • ✓ Test generation

Free · 3 plans

Feature Codex Amp Code (by Sourcegraph)
Category Agent / CLIAgent
Starting Price Free Free
Model Family GPT / CodexMulti-model
Open Source Yes (CLI)Partial (extension)

Pricing verified Feb 25, 2026. Codex pricing | Amp Code (by Sourcegraph) pricing

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Key Differences

  • Category: Codex is an AI agent and a CLI-based coding agent; Amp Code (by Sourcegraph) is an AI agent.
  • Starting price: Codex starts at $8/mo; Amp Code (by Sourcegraph) starts at free / BYOK.
  • Model family: Codex uses GPT / Codex; Amp Code (by Sourcegraph) uses Multi-model.
  • Open source: Codex: Yes (CLI). Amp Code (by Sourcegraph): Partial (extension).
  • Bring your own key: Codex supports BYOK; Amp Code (by Sourcegraph) does not.
  • Platforms: Codex runs on Linux, Web, Windows (experimental), macOS; Amp Code (by Sourcegraph) runs on Desktop, Web.
  • Provider: Codex is built by OpenAI; Amp Code (by Sourcegraph) is built by Sourcegraph.

Which Should You Choose?

Choose Codex if you want asynchronous coding tasks you can fire off and review when ready. Choose Amp Code (by Sourcegraph) if you want autonomous planning and multi-file task execution. Read our full reviews to see which fits your workflow.

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