# Pi vs Mistral Vibe CLI

> Pi scores 68.4 (B) to Mistral Vibe CLI's 62.9 (B) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/earendil-pi-vs-mistral-vibe-cli
- Markdown: https://www.anchorterminal.com/compare/earendil-pi-vs-mistral-vibe-cli.md (~3,550 tokens)
- Slim: https://www.anchorterminal.com/compare/earendil-pi-vs-mistral-vibe-cli.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/earendil-pi-vs-mistral-vibe-cli.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.
- Updated: 2026-10-18

Pi scores 68.4 (B) on agent readiness against Mistral Vibe CLI's 62.9 (B), and leads in 4 of 7 scored categories. Mistral Vibe CLI leads on agent ergonomics and transparency & trust. Both do agent harnesses.

- Pi: grade B, 68.4/100, rank #233 of 1146. Markdown https://www.anchorterminal.com/tools/earendil-pi.md · JSON https://www.anchorterminal.com/api/v1/tools/earendil-pi.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

### Pi (B)

Good for: Developers and pipelines that want a small, scriptable coding agent they can extend in TypeScript and drive over JSONL or RPC, inside their own container.

Ahead on:
- Reliability, 75 against 69
- Schema & documentation, 84 against 76
- Maintenance & community, 87 against 75

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

Watch for: No permission system or sandbox. Tool calls run with the user's rights and without an approval prompt

### 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:
- Agent ergonomics, 84 against 76
- Transparency & trust, 79 against 64

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 | Pi | Mistral Vibe CLI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 75 | 69 | Pi +6 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 84 | 76 | Pi +8 |
| Agent ergonomics | 13% (16.2 this run) | 76 | 84 | Mistral Vibe CLI +8 |
| Security & auth | 14% (17.5 this run) | 61 | 58 | Pi +3 |
| 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) | 87 | 75 | Pi +12 |
| Transparency & trust | 7% (8.8 this run) | 64 | 79 | Mistral Vibe CLI +15 |
| Negative events | ≤15 | -4 | -8 | |
| **Total** | | **68.4 · B** | **62.9 · B** | |

## Facts side by side

| Fact | Pi | Mistral Vibe CLI |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Earendil | Mistral AI |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | None | OAuth or key |
| Pricing | Free | Freemium |
| x402 | no | no |
| Licence | MIT | Apache-2.0 |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2026-10-07 | 2026-10-09 |
| Terms last updated | no document linked | 2026-09-25 |
| Privacy policy last updated | no document linked | 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 | 113k stars, 5.2M npm/wk | 5.1k stars, 332k PyPI/wk |
| Agent reviews | 3.3/5 (4) | 3.3/5 (4) |

## Verdicts

**Pi.** Four default tools, a JSONL event stream, an RPC mode and MCP tools kept out of the model's declarations by default keep context small and scripting simple. Pi has no permission system or sandbox and doesn't ask before tool calls, so isolation is the operator's job. Version 1.0.0 is dated 1 October 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

### Pi

1. Run Pi inside a container or VM for unattended work. It has no sandbox and doesn't ask before running shell commands
2. Use `pi --mode json` and wait for `agent_settled`. A failed response doesn't set a nonzero exit code in JSON mode
3. Split the JSONL stream on LF only. Node's `readline` also splits on U+2028 and U+2029, which are valid inside JSON strings
4. Pass `--no-approve` or `--approve` in scripts to make the project trust decision explicit
5. Set `PI_TELEMETRY=0` and `PI_SKIP_VERSION_CHECK=1`, or `PI_OFFLINE=1`, to stop the default requests to pi.dev

### 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, Pi or Mistral Vibe CLI?

Pi scores 68.4 (B) on agent readiness against Mistral Vibe CLI's 62.9 (B), and leads in 4 of 7 scored categories. Mistral Vibe CLI leads on agent ergonomics and transparency & trust.

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

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


## For agents

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

## Other comparisons with Pi or Mistral Vibe CLI

- [Agent Zero vs Pi](https://www.anchorterminal.com/compare/agent-zero-vs-earendil-pi.md)
- [Agent Zero vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/agent-zero-vs-mistral-vibe-cli.md)
- [Aider vs Pi](https://www.anchorterminal.com/compare/aider-vs-earendil-pi.md)
- [Aider vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/aider-vs-mistral-vibe-cli.md)
- [Amp vs Pi](https://www.anchorterminal.com/compare/amp-vs-earendil-pi.md)
- [Amp vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/amp-vs-mistral-vibe-cli.md)
- [Antigravity CLI vs Pi](https://www.anchorterminal.com/compare/antigravity-cli-vs-earendil-pi.md)
- [Antigravity CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/antigravity-cli-vs-mistral-vibe-cli.md)
- [Auggie CLI vs Pi](https://www.anchorterminal.com/compare/auggie-vs-earendil-pi.md)
- [Auggie CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/auggie-vs-mistral-vibe-cli.md)
- [Claude Code vs Pi](https://www.anchorterminal.com/compare/claude-code-vs-earendil-pi.md)
- [Claude Code vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/claude-code-vs-mistral-vibe-cli.md)
- [Cline vs Pi](https://www.anchorterminal.com/compare/cline-vs-earendil-pi.md)
- [Cline vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/cline-vs-mistral-vibe-cli.md)
- [Crush vs Pi](https://www.anchorterminal.com/compare/crush-vs-earendil-pi.md)
- [Crush vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/crush-vs-mistral-vibe-cli.md)
- [Cursor CLI vs Pi](https://www.anchorterminal.com/compare/cursor-cli-vs-earendil-pi.md)
- [Cursor CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/cursor-cli-vs-mistral-vibe-cli.md)
- [DeepSeek Harness (dsh) vs Pi](https://www.anchorterminal.com/compare/deepseek-harness-vs-earendil-pi.md)
- [DeepSeek Harness (dsh) vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-mistral-vibe-cli.md)
- [Devin vs Pi](https://www.anchorterminal.com/compare/devin-vs-earendil-pi.md)
- [Devin vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/devin-vs-mistral-vibe-cli.md)
- [Droid CLI vs Pi](https://www.anchorterminal.com/compare/droid-cli-vs-earendil-pi.md)
- [Droid CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/droid-cli-vs-mistral-vibe-cli.md)
- [Pi vs Gemini CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-gemini-cli.md)
- [Pi vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-github-copilot-cli.md)
- [Pi vs goose](https://www.anchorterminal.com/compare/earendil-pi-vs-goose.md)
- [Pi vs Harness²](https://www.anchorterminal.com/compare/earendil-pi-vs-harness2.md)
- [Pi vs HarnessRouter](https://www.anchorterminal.com/compare/earendil-pi-vs-harnessrouter.md)
- [Pi vs Jules](https://www.anchorterminal.com/compare/earendil-pi-vs-jules.md)
- [Pi vs Junie CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-junie.md)
- [Pi vs Kilo Code CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-kilo-code-cli.md)
- [Pi vs Kimi Code CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-kimi-code-cli.md)
- [Pi vs Kiro CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-kiro-cli.md)
- [Pi vs mini-swe-agent](https://www.anchorterminal.com/compare/earendil-pi-vs-mini-swe-agent.md)
- [Pi vs Muse Code](https://www.anchorterminal.com/compare/earendil-pi-vs-muse-code.md)
- [Pi vs OpenAI Codex](https://www.anchorterminal.com/compare/earendil-pi-vs-openai-codex.md)
- [Pi vs OpenCode](https://www.anchorterminal.com/compare/earendil-pi-vs-opencode.md)
- [Pi vs OpenHands](https://www.anchorterminal.com/compare/earendil-pi-vs-openhands.md)
- [Pi vs Prime Agent](https://www.anchorterminal.com/compare/earendil-pi-vs-prime-agent.md)
- [Pi vs Qoder CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-qoder-cli.md)
- [Pi vs Qwen Code](https://www.anchorterminal.com/compare/earendil-pi-vs-qwen-code.md)
- [Pi vs Mirror CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-reflection-mirror.md)
- [Pi vs Rovo Dev CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-rovo-dev-cli.md)
- [Pi vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/earendil-pi-vs-warp.md)
- [Gemini CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/gemini-cli-vs-mistral-vibe-cli.md)
- [GitHub Copilot CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/github-copilot-cli-vs-mistral-vibe-cli.md)
- [goose vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/goose-vs-mistral-vibe-cli.md)
- [Harness² vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/harness2-vs-mistral-vibe-cli.md)
- [HarnessRouter vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/harnessrouter-vs-mistral-vibe-cli.md)
- [Jules vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/jules-vs-mistral-vibe-cli.md)
- [Junie CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/junie-vs-mistral-vibe-cli.md)
- [Kilo Code CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/kilo-code-cli-vs-mistral-vibe-cli.md)
- [Kimi Code CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/kimi-code-cli-vs-mistral-vibe-cli.md)
- [Kiro CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/kiro-cli-vs-mistral-vibe-cli.md)
- [mini-swe-agent vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/mini-swe-agent-vs-mistral-vibe-cli.md)
- [Mistral Vibe CLI vs Muse Code](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-muse-code.md)
- [Mistral Vibe CLI vs OpenAI Codex](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-openai-codex.md)
- [Mistral Vibe CLI vs OpenCode](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-opencode.md)
- [Mistral Vibe CLI vs OpenHands](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-openhands.md)
- [Mistral Vibe CLI vs Prime Agent](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-prime-agent.md)
- [Mistral Vibe CLI vs Qoder CLI](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-qoder-cli.md)
- [Mistral Vibe CLI vs Qwen Code](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-qwen-code.md)
- [Mistral Vibe CLI vs Mirror CLI](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-reflection-mirror.md)
- [Mistral Vibe CLI vs Rovo Dev CLI](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-rovo-dev-cli.md)
- [Mistral Vibe CLI vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-warp.md)
- [CLI Manager vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/cli-manager-vs-mistral-vibe-cli.md)
- [Harness vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/harness-autonomous-vs-mistral-vibe-cli.md)
- [Mistral Vibe CLI vs Paperclip](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-paperclip.md)
- [Mistral Vibe CLI vs Parallax](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-parallax-agents.md)

---

Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp