Codeium vs What the Diff

A detailed comparison to help you choose between Codeium and What the Diff.

Codeium

Codeium

Free AI code completion for every developer

What the Diff

What the Diff

AI code review summaries for GitHub PRs

Rating4.5 (449 reviews)4.9 (186 reviews)
Pricing Modelfreemiumfreemium
Starting PriceFree tier availableFree tier available
Best ForIndividual developers wanting free AI code completionEngineering teams wanting AI to summarize PRs for faster code review
Free Tier
API Access
Team Features
Open Source
Tags
free tieropen source
free tierteam features
Visit Codeium →Visit What the Diff →

Codeium

Pros

  • + Completely free individual tier
  • + 70+ languages
  • + Self-hosted enterprise option

Cons

  • - Less capable than Cursor
  • - Smaller context window
View full Codeiumreview →

What the Diff

Pros

  • + Automatic PR summaries
  • + Saves review context-setting time
  • + Easy GitHub integration

Cons

  • - Summary only — no deep review
  • - Limited to GitHub
View full What the Diffreview →

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Codeium vs What the Diff — Comparison 2026 | ToolSpotter