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Claude Code vs Aider. Rows marked Differs have different values.

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Claude Code

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Aider

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TypeOpen sourceOpen source
Categories
In one lineAnthropic's agentic coding tool for the terminal, IDE and GitHub.AI pair programming in your terminal.
Stage & funding——
GitHub starsDiffers≈154k≈50k
LicenseDiffersProprietary (Anthropic Commercial Terms)Apache-2.0
LanguageDiffersTypeScriptPython
Last pushDiffers—May 22, 2026
Works with——
Built onDiffers—
Built on itDiffers—
Similar toDiffers—
People linkedDiffers31
EventsDiffers0
Pros
  • User reportsUsers widely see it as the strongest overall agent with Opus-class models, and strong with skills, hooks and LSPs.[1][2]
  • User reportsRich built-in harness features (subagents, skills, hooks, plugins, headless mode) that other tools can call into.[1][2]
  • User reportsUsers report the flat Max subscription covers far more usage than the same work would cost at API prices.[1][2]
  • MetadataVery fast release cadence (v2.1.312 on Oct 27, 2026).[1]
  • User reportsCredited by users as the tool that defined terminal coding agents, with plan-style modes before Claude Code.[1][2][3]
  • User reportsUsers praise architect mode, where a pricier model plans and a cheaper one edits, as cost-effective.[1][2][3]
  • User reportsWorks with many models, including local ones via Ollama, and can be scripted.[1][2]
  • MetadataApache-2.0 and git-native: it commits its changes, so they are easy to review and revert.[1]
Cons
  • User reportsUsage caps and quota changes are a recurring complaint, and people fall back to Codex or OpenCode.[1][2]
  • User reportsUsers measure heavy base context: about 33k tokens before your prompt vs about 7k for OpenCode.[1][2]
  • MetadataSubscriptions can't be used in third-party harnesses, and the CLI has no OSI open-source license; use falls under Anthropic's commercial terms.[1][2]
  • MetadataAbout 16k open GitHub issues and PRs, plus trust worries after the March 2026 source leak.[1][2]
  • User reportsLess autonomous: users note it lacked an automatic write-run-fix loop and defaulted to limited multi-turn recursion.[1][2]
  • User reportsSome users find it feels like chat in a terminal, with nagging prompts and 'too much busywork'.[1][2]
  • MetadataDevelopment has slowed: the last release was v0.86.0 (Aug 2025), the last push was May 2026, and 1,408 issues are open. Users report moving to newer harnesses.[1][2][3]
  • User reportsUsers report quality dropping in long conversations and heavy token use (2M tokens a day for one user).[1][2]
Best forDevelopers who want the most capable out-of-the-box coding agent with Claude models and a deep extension surface.Developers who want a controlled, git-native pair programmer with explicit file context and any model.
Watch out forYou are locked to Anthropic's quotas and terms; plan for usage caps and measure the context overhead.Slowing development and a less agentic loop than current harnesses.
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