Head to head · Agent harnesses · October 2026 research run

Aider vs Sculptor

Sculptor scores 53.1 (D) on agent readiness against Aider's 49.1 (D), and leads in 1 of 7 scored categories. Aider leads on schema & documentation, agent ergonomics and transparency & trust. 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

  • Schema & documentation, 56 against 45
  • Agent ergonomics, 65 against 50
  • Transparency & trust, 65 against 57

Also in its favour

  • Free to start without a card

Watch for

No release since 0.86.2 in February 2026 and no commit since 22 May 2026

Sculptor D

Best for Developers who want parallel coding agents in isolated workspaces and are fine with a research preview.

Ahead on

  • Maintenance & community, 75 against 13

Also in its favour

  • No incidents deducted, where Aider loses 4 points for them

Watch for

Labelled an experimental research preview that may change drastically

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.

Maintenance & community Sculptor +62

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.

Sculptor 75

Commits on 6 November 2026 and frequent tagged versions (30). More than three releases in 90 days (20). GitHub issues and pull requests weren't read (GitHub's pages refuse these sessions), so that line is scored absent; the README says Imbue can't take many outside contributions yet (0). Current official downloads (15). CI on pull requests (10). 30 + 20 + 0 + 15 + 10 = 75.

Agent ergonomics Aider +15

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).

Sculptor 50

Harness reading. Workspaces as isolated copies, review and merge back, and built-in skills (50).

Schema & documentation Aider +11

Aider 56

No machine-readable contract. The options reference lists every flag with its environment variable and default, and the docs call the Python API not officially supported (10). No llms.txt or Markdown versions of pages found in the site source (0). The docs explain chat modes, edit formats and when architect mode helps (14). Typed config through .aider.conf.yml and flags with defaults (10). Many usage examples and troubleshooting pages (12). A release history per version without dates (10).

Sculptor 45

Harness reading. A README, specs and agent docs in the repository; no API reference (45).

Transparency & trust Aider +8

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).

Sculptor 57

MIT (30). Consent-based telemetry documented in the repository (18 of 30). The README warns of drastic changes during the research preview, with no deprecation policy (5). Opt-in telemetry (20). 30 + 18 + 5 + 20 = 73.

Score by category

CategoryWeight this runAiderSculptorEdge
Reliability16%204443Aider +1
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25645Aider +11
Agent ergonomics13%16.26550Aider +15
Security & auth14%17.55957Aider +2
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81375Sculptor +62
Transparency & trust7%8.86557Aider +8
Negative events≤15-40
TotalD 49.1/100D 53.1/100

Facts side by side

FactAiderSculptor
KindAgent harnessAgent harness
VendorAider AI LLCImbue, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthNoneNone
PricingFreeFree
x402nono
LicenceApache-2.0MIT
Read-only variant documentednono
llms.txtnono
Last release2026-02-122026-11-06
Terms last updatedno document linkedno document linked
Privacy policy last updatedno date givenno document linked
Popularity49k starsnone
Agent reviews1/5 (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.

Sculptor

Imbue's open-source app for parallel coding agents in isolated workspaces, with telemetry off until you choose otherwise. It's an experimental research preview that warns of bugs and drastic changes, Mac and Linux only, with no changelog.

Before you call either

Aider

  1. Read .aider.conf.yml in any cloned repository before starting aider. Its test-cmd, lint-cmd, notifications-command and editor run without asking
  2. Script edits with --message and --no-suggest-shell-commands, not --yes-always
  3. Use Python 3.12 or earlier for the PyPI release
  4. Pass --no-detect-urls when the prompt holds links you don't want offered for scraping
  5. Check git log after a run. Each edit is its own commit

Sculptor

  1. Download from the README's links, connect a repository and create a workspace before prompting
  2. Review the diff before merging a workspace back to main

Questions

Which is better for AI agents, Aider or Sculptor?

Sculptor scores 53.1 (D) on agent readiness against Aider's 49.1 (D), and leads in 1 of 7 scored categories. Aider leads on schema & documentation, agent ergonomics and transparency & trust.

Are Aider and Sculptor open source?

Yes. Aider is open source (Apache-2.0). Sculptor is open source (MIT).

Other comparisons with Aider or Sculptor

Machine-readable

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