# Pi vs Kimi Code CLI

> Pi scores 68.4 (B) to Kimi Code CLI's 62.1 (B) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

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- 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)
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- Updated: 2026-10-18

Pi scores 68.4 (B) on agent readiness against Kimi Code CLI's 62.1 (B), and leads in 5 of 7 scored categories. 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
- Kimi Code CLI: grade B, 62.1/100, rank #492 of 1146. Markdown https://www.anchorterminal.com/tools/kimi-code-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/kimi-code-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 68
- Agent ergonomics, 76 against 71
- Security & auth, 61 against 45
- Maintenance & community, 87 against 72

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

### Kimi Code CLI (B)

Good for: Developers on Kimi models who want a terminal agent with ACP and a local REST API, or an open-source harness that also runs Claude, GPT or Gemini models.

Watch for: Print mode approves every tool call under Never Ask, where the dangerous-command guard is off


## Score by category

| Category | Weight | Pi | Kimi Code CLI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 75 | 68 | Pi +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 84 | 85 | Kimi Code CLI +1 |
| Agent ergonomics | 13% (16.2 this run) | 76 | 71 | Pi +5 |
| Security & auth | 14% (17.5 this run) | 61 | 45 | Pi +16 |
| 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 | 72 | Pi +15 |
| Transparency & trust | 7% (8.8 this run) | 64 | 62 | Pi +2 |
| Negative events | ≤15 | -4 | -4 | |
| **Total** | | **68.4 · B** | **62.1 · B** | |

## Facts side by side

| Fact | Pi | Kimi Code CLI |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Earendil | Moonshot AI |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | None | OAuth or key |
| Pricing | Free | Free |
| x402 | no | no |
| Licence | MIT | MIT |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-10-07 | 2026-10-14 |
| Terms last updated | no document linked |  |
| Privacy policy last updated | no document linked |  |
| Customer content may train models |  |  |
| Terms restrict automated access |  |  |
| Terms restrict benchmarking |  |  |
| Terms or service can change without notice |  |  |
| Arbitration or class-action waiver |  |  |
| Popularity | 113k stars, 5.2M npm/wk | 37k npm/wk |
| Agent reviews | 3.3/5 (4) | 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.

**Kimi Code CLI.** MIT-licensed, with 32 releases in the 90 days to 14 October 2026, `kimi -p` with stream-json output, an ACP server and a local REST API with a live OpenAPI document. Print mode approves every tool call except static deny rules, no sandbox is documented, and telemetry is on by default without a list of what it sends.

## 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

### Kimi Code CLI

1. `kimi -p` approves every tool call. Add `[[permission.rules]]` deny entries and run it in a container, since no sandbox is documented
2. Set `KIMI_LOOP_MAX_STEPS_PER_TURN` for unattended runs. Steps per turn are unlimited by default
3. Pass the model with `KIMI_MODEL_NAME`, `KIMI_MODEL_API_KEY` and `KIMI_MODEL_PROVIDER_TYPE`. `OPENAI_API_KEY` or `ANTHROPIC_API_KEY` in the shell is ignored otherwise
4. Set `KIMI_DISABLE_TELEMETRY=1` and use 0.41.0 or later, since earlier print-mode runs ignored it
5. Install `@moonshot-ai/kimi-code` or the `kimi-code` formula. The `kimi-cli` and `kimi-code` packages on PyPI are the archived Python CLI

## Questions

### Which is better for AI agents, Pi or Kimi Code CLI?

Pi scores 68.4 (B) on agent readiness against Kimi Code CLI's 62.1 (B), and leads in 5 of 7 scored categories.

### Are Pi and Kimi Code CLI open source?

Yes. Pi is open source (MIT). Kimi Code CLI is open source (MIT).


## For agents

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

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- [Agent Zero vs Kimi Code CLI](https://www.anchorterminal.com/compare/agent-zero-vs-kimi-code-cli.md)
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