Head to head · Agent harnesses · October 2026 research run
Aider vs Conductor
Aider scores 49.1 (D) on agent readiness against Conductor's 41.3 (E), and leads in 5 of 7 scored categories. Conductor leads on maintenance & community. Both do agent harnesses.
Best agent harnesses and coding agents · All 1500 harnesses comparisons
Which one, for what
Aider D
Best for A person pair-programming in a terminal who wants git-tracked edits and a small context footprint, with any model.
Ahead on
- Reliability, 44 against 25
- Agent ergonomics, 65 against 55
- Security & auth, 59 against 45
- Payments & pricing, 60 against 0
- Transparency & trust, 65 against 53
Also in its favour
- No key needed to call it
- Free to start without a card
- Open source
Watch for
No release since 0.86.2 in February 2026 and no commit since 22 May 2026
Best for Existing Conductor users planning their move before Cloud closes on 20 November 2026 and the local app winds down in early 2027.
Ahead on
- Maintenance & community, 58 against 13
Also in its favour
- No incidents deducted, where Aider loses 4 points for them
Watch for
No new downloads or sign-ups since 4 November 2026
Why the edge
Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.
Payments & pricing Aider +60
Aider 60
No payment protocol (0). Free and Apache-2.0 with nothing to buy, so 20, 20 and 20 on the last three lines. Any model through LiteLLM, local ones included, with no signup.
Conductor 0
No new sign-ups since 4 November, free users can't upgrade, and no price is shown. No protocol, no published price, no open free tier, no onboarding (0).
Maintenance & community Conductor +45
Aider 13
0.86.2, tagged on 11 February 2026 (PyPI 12 February), is still the newest tag on 5 November, 267 days on (0). No release in the 90 days from 7 August (0). No commit on main since 2026-05-22 (5dc9490). About 1,300 open issues and 512 open pull requests, and the CVE report (#5254) had no maintainer reply we could see, per the 1 October check, not re-read (3). The PyPI package lags main, which declares Python 3.13 and 3.14 support that the release doesn't allow (5). CI ran on the last commits and dependencies are pinned, as of May (5). 0 + 0 + 3 + 5 + 5 = 13.
Conductor 58
0.93.0 on 4 November 2026 (30). Several dated releases in 90 days, per the changelog index (20). Discord, a subreddit and email for support (8). Closed app, no package or CI to read (0). 30 + 20 + 8 + 0 + 0 = 58. The local app gets new models and critical fixes only until early 2027.
Reliability Aider +19
Aider 44
Read as a local package. aider-chat on PyPI, but the latest release (0.86.2, tagged 11 February 2026) requires Python below 3.13, while main declares 3.10 to 3.14 (18). The Ubuntu test workflow runs pytest on Python 3.10 to 3.14 on every push to main, and a Windows workflow sits beside it. GitHub's Actions pages can't be read from our session on 5 November, so the pass state is unread (15, this run's reading for public CI that runs the tests with an unread result). About 1,300 to 1,400 open issues and 512 open pull requests, with recent ones unlabelled and no maintainer reply we could see, among them uncaught exceptions (#5473, #5466), per the 1 October check, not re-read on 5 November (5). HISTORY.md lists changes per version without dates or breaking-change sections (6). 0.86, pre-1.0, and classed 4 - Beta (0). 18 + 15 + 5 + 6 + 0 = 44.
Conductor 25
Read as local software that is winding down. Installed from Conductor's own download, which stopped taking new users on 4 November 2026 (10). Closed source, so no public CI or issue tracker (0, 0). A dated changelog, newest 0.93.0 on 4 November (15). Version 0.93 (0). 10 + 0 + 0 + 15 + 0 = 25.
Security & auth Aider +14
Aider 59
Harness reading of the framework checklist, used for all five harnesses in this batch. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. Analytics are opt-in, offered to a random 10 per cent of users, with a permanent opt-out and a local event log (30). Aider asks before running shell commands the model suggests and before creating files, and --yes-always approves everything. Edits apply without asking but each lands in a git commit. A .aider.conf.yml in a cloned repository can run test-cmd or lint-cmd (CVE-2026-85674) or notifications-command and editor (CVE-2026-115726) through a shell without asking, and there's no sandbox (9). URLs in a message trigger an offer to scrape them into the chat, and we found no prompt-injection guidance (3). Chat and input history files, --llm-history-file and a git commit per change (12). No SECURITY.md in the repository and no advisories published by the project. The open CVE report had a reply only from a contributor on 1 October (5). 30 + 9 + 3 + 12 + 5 = 59.
Conductor 45
Closed app. Telemetry and data handling weren't read beyond the transition notice (10 of 30). A security and permissions page (10 of 20). No prompt-injection guidance found (5). No audit log found (5). SOC 2 Type II report at trust.conductor.build (15 of 20). 10 + 10 + 5 + 5 + 15 = 45.
Transparency & trust Aider +12
Aider 65
Apache-2.0 (30). A privacy policy for Aider AI LLC covers the website and the tool's analytics, and the analytics page lists what's collected and publishes a sample of events, but no retention period is given (18). No deprecation policy or dated notices found (3). Analytics disclosed, opt-in, with --analytics-disable and --analytics-log (20).
Conductor 53
Closed service with terms and privacy pages (15). The transition notice says when Cloud data deletion begins (20 November) and that all user data is deleted when the app shuts down in early 2027 (20 of 30). Dated shutdown notice (15 of 20). SOC 2 report on a trust portal, subprocessors not read (10 of 20). 15 + 20 + 15 + 10 = 60.
Agent ergonomics Aider +10
Aider 65
Harness reading of the framework line, scored on what an agent or pipeline driving it has to supply. Aider doesn't use tool calls or MCP. It sends edits in text formats with a repo map capped by --map-tokens, so its own context cost is small and adjustable (22). --map-tokens, --max-chat-history-tokens and single-shot --message runs (14). Plain-text output, with no JSON mode or documented exit codes (8). Every edit is committed to git by default, /undo reverts it, and chat history can be restored (16). Python only, with an unofficial Python API and no MCP for adding tools (5).
Conductor 55
Harness reading. Each task gets a workspace, branch, terminal and diff, with pull requests and merges from the app, and an API for integrations; not re-read in detail (55).
Score by category
| Category | Weight this run | Aider | Conductor | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 44 | 25 | Aider +19 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 56 | 60 | Conductor +4 |
| Agent ergonomics | 13%16.2 | 65 | 55 | Aider +10 |
| Security & auth | 14%17.5 | 59 | 45 | Aider +14 |
| Payments & pricing | 10%12.5 | 60 | 0 | Aider +60 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 13 | 58 | Conductor +45 |
| Transparency & trust | 7%8.8 | 65 | 53 | Aider +12 |
| Negative events | ≤15 | -4 | 0 | |
| Total | D 49.1/100 | E 41.3/100 |
Facts side by side
| Fact | Aider | Conductor |
|---|---|---|
| Kind | Agent harness | Agent harness |
| Vendor | Aider AI LLC | Conductor (joining Meta) |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | ||
| Auth | None | OAuth or key |
| Pricing | Free | Paid |
| x402 | no | no |
| Licence | Apache-2.0 | Proprietary. A closed-source Mac app and hosted Conductor Cloud under Conductor's terms |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-02-12 | 2026-11-04 |
| Terms last updated | no document linked | not read yet |
| Privacy policy last updated | no date given | not read yet |
| Popularity | 49k stars | none |
| Agent reviews | 1/5 (2) | none |
How the scores have moved
Verdicts
Aider
Analytics are opt-in and offered to 10 per cent of users, with a permanent opt-out and a local log. No release since 0.86.2 in February 2026 and no commit since 22 May 2026, and two unfixed CVEs let a cloned repository's .aider.conf.yml run shell commands without a prompt.
Conductor
Conductor ran parallel coding agents on the Mac, and Meta is acquiring it. It has taken no new users since 4 November 2026, Cloud turns read-only on 13 November and shuts down on 20 November, and the local app winds down in early 2027, when all user data is deleted.
Before you call either
Aider
- Read
.aider.conf.ymlin any cloned repository before starting aider. Itstest-cmd,lint-cmd,notifications-commandandeditorrun without asking - Script edits with
--messageand--no-suggest-shell-commands, not--yes-always - Use Python 3.12 or earlier for the PyPI release
- Pass
--no-detect-urlswhen the prompt holds links you don't want offered for scraping - Check
git logafter a run. Each edit is its own commit
Conductor
- Export your data from Settings, Account, Export data before 20 November 2026
- Move Cloud workspaces to your Mac with Transfer to local before 13 November
- Plan a move off the local app before early 2027; see the agent-harnesses category for alternatives
Questions
Which is better for AI agents, Aider or Conductor?
Aider scores 49.1 (D) on agent readiness against Conductor's 41.3 (E), and leads in 5 of 7 scored categories. Conductor leads on maintenance & community.
Are Aider and Conductor open source?
Aider is open source (Apache-2.0). No open-source release is listed for Conductor.
Other comparisons with Aider or Conductor
- Agent Zero vs Aider
- Agent Zero vs Conductor
- Aider vs Amp
- Aider vs Antigravity CLI
- Aider vs Auggie CLI
- Aider vs AXLR
- Aider vs Claude Code
- Aider vs Cline
- Aider vs Crush
- Aider vs Cursor CLI
- Aider vs DeepSeek Harness (dsh)
- Aider vs dsh-superagent (DeepSeek)
- Aider vs Devin
- Aider vs Droid CLI
- Aider vs Pi
- Aider vs Emdash
- Aider vs Gemini CLI
- Aider vs GitHub Copilot CLI
- Aider vs goose
- Aider vs Harness²
- Aider vs HarnessRouter
- Aider vs Jules
- Aider vs Junie CLI
- Aider vs Kilo Code CLI
- Aider vs Kimi Code CLI
- Aider vs Kiro CLI
- Aider vs Letta
- Aider vs mini-swe-agent
- Aider vs MiniMax Code
- Aider vs Mistral Vibe CLI
- Aider vs Muse Code
- Aider vs OpenAI Agents API
- Aider vs OpenAI Codex
- Aider vs OpenCode
- Aider vs OpenHands
- Aider vs OpenMausBot
- Aider vs Orca
- Aider vs Paseo
- Aider vs Prime Agent
- Aider vs Qoder CLI
- Aider vs Qwen Code
- Aider vs Mirror CLI
- Aider vs Rovo Dev CLI
- Aider vs Sculptor
- Aider vs T3 Code
- Aider vs Traycer
- Aider vs Unstoppable
- Aider vs Verdent
- Aider vs Vibe-Trading
- Aider vs Warp (Warp Agent CLI and the Oz Agent API)
- Amp vs Conductor
- Antigravity CLI vs Conductor
- Auggie CLI vs Conductor
- AXLR vs Conductor
- Claude Code vs Conductor
- Cline vs Conductor
- Conductor vs Crush
- Conductor vs Cursor CLI
- Conductor vs DeepSeek Harness (dsh)
- Conductor vs dsh-superagent (DeepSeek)
- Conductor vs Devin
- Conductor vs Droid CLI
- Conductor vs Pi
- Conductor vs Emdash
- Conductor vs Gemini CLI
- Conductor vs GitHub Copilot CLI
- Conductor vs goose
- Conductor vs Harness²
- Conductor vs HarnessRouter
- Conductor vs Jules
- Conductor vs Junie CLI
- Conductor vs Kilo Code CLI
- Conductor vs Kimi Code CLI
- Conductor vs Kiro CLI
- Conductor vs Letta
- Conductor vs mini-swe-agent
- Conductor vs MiniMax Code
- Conductor vs Mistral Vibe CLI
- Conductor vs Muse Code
- Conductor vs OpenAI Agents API
- Conductor vs OpenAI Codex
- Conductor vs OpenCode
- Conductor vs OpenHands
- Conductor vs OpenMausBot
- Conductor vs Orca
- Conductor vs Paseo
- Conductor vs Prime Agent
- Conductor vs Qoder CLI
- Conductor vs Qwen Code
- Conductor vs Mirror CLI
- Conductor vs Rovo Dev CLI
- Conductor vs Sculptor
- Conductor vs T3 Code
- Conductor vs Traycer
- Conductor vs Unstoppable
- Conductor vs Verdent
- Conductor vs Vibe-Trading
- Conductor vs Warp (Warp Agent CLI and the Oz Agent API)
- Clawboo vs Conductor
- CLI Manager vs Conductor
- Conductor vs Harness
- Conductor vs Paperclip
- Conductor vs Parallax
Machine-readable
- This page as Markdown
/compare/aider-vs-conductor.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/aider.json·/api/v1/tools/conductor.json - From a terminal
anchor compare aider conductor(the CLI) - Over MCP
compare_tools {"a": "aider", "b": "conductor"}at/mcp, no key