Head to head · Agent harnesses · October 2026 research run

Amp vs Mistral Vibe CLI

Mistral Vibe CLI scores 62.9 (B) on agent readiness against Amp's 57.1 (C), and leads in 6 of 7 scored categories. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

Which one, for what

Amp C

Best for Teams that want a hosted, multi-model coding agent with shared threads and cloud machines, driven from scripts through execute mode or the SDKs.

Also in its favour

  • No incidents deducted, where Mistral Vibe CLI loses 8 points for them

Watch for

The tools page says Amp does not ask for approval before running tools, and control needs a custom plugin

Mistral Vibe CLI B

Best 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 31
  • Agent ergonomics, 84 against 69
  • Payments & pricing, 60 against 35

Also in its favour

  • Free to start without a card
  • Open source

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

CategoryWeight this runAmpMistral Vibe CLIEdge
Reliability16%203169Mistral Vibe CLI +38
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27276Mistral Vibe CLI +4
Agent ergonomics13%16.26984Mistral Vibe CLI +15
Security & auth14%17.55758Mistral Vibe CLI +1
Payments & pricing10%12.53560Mistral Vibe CLI +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87975Amp +4
Transparency & trust7%8.87779Mistral Vibe CLI +2
Negative events≤150-8
TotalC 57.1/100B 62.9/100

Facts side by side

FactAmpMistral Vibe CLI
KindAgent harnessAgent harness
VendorAmp Frontier CorporationMistral AI
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth or key
PricingFreemiumFreemium
x402nono
LicenceProprietary, under the Amp licence terms (Amp Frontier Corporation). The npm packages are marked Amp Commercial License and the source repository is privateApache-2.0
Read-only variant documentednoyes
llms.txtyesyes
Last release2026-10-082026-10-09
Terms last updatedno date given2026-09-25
Privacy policy last updated2026-09-102026-09-03
Customer content may train modelsnot found in the textyes, with an opt-out
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticeyesyes
Arbitration or class-action waiveryesnot found in the text
Popularity41k npm/wk5.1k stars, 332k PyPI/wk
Agent reviewsnone3.3/5 (4)

Verdicts

Amp

Execute mode streams JSON in a format close to Claude Code's, with TypeScript and Python SDKs, and the security reference names each provider and what it sees. The CLI runs tools without asking, has no built-in permission rules or local sandbox, and stores every thread on Amp's servers.

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

Amp

  1. Run unattended jobs in a container or VM. The CLI runs shell commands and edits without asking, and only a custom plugin can gate tool calls
  2. Set AMP_API_KEY to an access token starting sgamp_ from Settings. The CLI rejects the short-lived token that amp login stores
  3. Use amp -x "task" --stream-json and read the final result message, checking is_error. Exit codes are not documented
  4. Set AMP_SKIP_UPDATE_CHECK=1 or amp.updates.mode to disabled in CI. Updates install automatically by default
  5. Treat the block headed INSTRUCTIONS FOR LLMs in ampcode.com page source as vendor copy, and take facts from the docs Markdown

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, Amp or Mistral Vibe CLI?

Mistral Vibe CLI scores 62.9 (B) on agent readiness against Amp's 57.1 (C), and leads in 6 of 7 scored categories.

Are Amp and Mistral Vibe CLI open source?

No open-source release is listed for Amp. Mistral Vibe CLI is open source (Apache-2.0).

Other comparisons with Amp or Mistral Vibe CLI

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