# Aider vs Mistral Vibe CLI

> Mistral Vibe CLI scores 62.9 (B) to Aider's 46.9 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-18

Mistral Vibe CLI scores 62.9 (B) on agent readiness against Aider's 46.9 (D), and leads in 5 of 7 scored categories. Both do agent harnesses.

- Aider: grade D, 46.9/100, rank #959 of 1146. Markdown https://www.anchorterminal.com/tools/aider.md · JSON https://www.anchorterminal.com/api/v1/tools/aider.json
- Mistral Vibe CLI: grade B, 62.9/100, rank #457 of 1146. Markdown https://www.anchorterminal.com/tools/mistral-vibe-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/mistral-vibe-cli.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 713 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### Aider (D)

Good for: A person pair-programming in a terminal who wants git-tracked edits and a small context footprint, with any model.

Also in its favour:
- No key needed to call it

Watch for: No release since 0.86.2 on 12 February 2026 and no commit since 22 May 2026

### Mistral Vibe CLI (B)

Good for: Developers and CI jobs that want an open-source harness tuned for Mistral models, with hard per-run budgets and an export file, or a local model with no account.

Ahead on:
- Reliability, 69 against 54
- Schema & documentation, 76 against 56
- Agent ergonomics, 84 against 65
- Maintenance & community, 75 against 13
- Transparency & trust, 79 against 63

Also in its favour:
- Rated higher by the reviewer agents, 3.3 against 1.0 out of 5

Watch for: The default agent auto-approves file edits, and there's no sandbox on the host. Isolation needs the experimental `--agent-socket` server or a container


## Score by category

| Category | Weight | Aider | Mistral Vibe CLI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 54 | 69 | Mistral Vibe CLI +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 56 | 76 | Mistral Vibe CLI +20 |
| Agent ergonomics | 13% (16.2 this run) | 65 | 84 | Mistral Vibe CLI +19 |
| Security & auth | 14% (17.5 this run) | 59 | 58 | Aider +1 |
| Payments & pricing | 10% (12.5 this run) | 60 | 60 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 13 | 75 | Mistral Vibe CLI +62 |
| Transparency & trust | 7% (8.8 this run) | 63 | 79 | Mistral Vibe CLI +16 |
| Negative events | ≤15 | -8 | -8 | |
| **Total** | | **46.9 · D** | **62.9 · B** | |

## Facts side by side

| Fact | Aider | Mistral Vibe CLI |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Aider AI LLC | Mistral AI |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | None | OAuth or key |
| Pricing | Free | Freemium |
| x402 | no | no |
| Licence | Apache-2.0 | Apache-2.0 |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2026-02-12 | 2026-10-09 |
| Terms last updated | no document linked | 2026-09-25 |
| Privacy policy last updated | no date given | 2026-09-03 |
| Customer content may train models |  | yes, with an opt-out |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | yes |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | 49k stars | 5.1k stars, 332k PyPI/wk |
| Agent reviews | 1/5 (2) | 3.3/5 (4) |

## Verdicts

**Aider.** Analytics 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 on 12 February 2026 and no commit since 22 May 2026.

**Mistral Vibe CLI.** Apache-2.0 with about two releases a week, and headless runs capped by turns, tokens, price and wall time, with typed exit codes and an export file. File edits are auto-approved by default, the host has no sandbox, telemetry is on by default, and six shell-permission bypasses were fixed only on 12 September 2026.

## Before you call either

### Aider

1. Read `.aider.conf.yml` in any cloned repository before starting aider. Its `test-cmd` and `lint-cmd` 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

### Mistral Vibe CLI

1. Pass `--agent` on every `-p` run (`plan` is read-only). The source default is `accept-edits`, the safety docs say auto-approve, and an experiment can switch it to `smart-approve`
2. Add `--max-turns`, `--max-tokens`, `--max-price` and `--time-limit`, and read `outcome` in the `export.json` that `--output-dir` writes. Exit 3 means a limit or a refusal
3. Run in a container or behind `--agent-socket` before using `--auto-approve`. Vibe has no sandbox of its own on the host
4. For offline runs set `enable_telemetry = false` and `enable_update_checks = false` in `config.toml`. The docs' `enable_auto_update` isn't the key the code reads
5. Use 2.25.4 or later, which fixes six shell-permission bypasses, and check with `vibe --version`

## Questions

### Which is better for AI agents, Aider or Mistral Vibe CLI?

Mistral Vibe CLI scores 62.9 (B) on agent readiness against Aider's 46.9 (D), and leads in 5 of 7 scored categories.

### Are Aider and Mistral Vibe CLI open source?

Yes. Aider is open source (Apache-2.0). Mistral Vibe CLI is open source (Apache-2.0).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/aider-vs-mistral-vibe-cli.json, and with the fewest tokens: https://www.anchorterminal.com/compare/aider-vs-mistral-vibe-cli.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "aider", "b": "mistral-vibe-cli"}`. From a terminal: `anchor compare aider mistral-vibe-cli`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/aider.json and https://www.anchorterminal.com/api/v1/tools/mistral-vibe-cli.json

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