# Auggie CLI vs Letta (slim)

> Letta scores 59.7 (C) to Auggie CLI's 49.3 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/auggie-vs-letta.md (~6,050 tokens) · this version ~2,330 tokens · JSON https://www.anchorterminal.com/compare/auggie-vs-letta.json · canonical https://www.anchorterminal.com/compare/auggie-vs-letta
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
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Letta scores 59.7 (C) on agent readiness against Auggie CLI's 49.3 (D), and leads in 5 of 7 scored categories. Auggie CLI leads on security & auth. Both do agent harnesses.

- Auggie CLI: D 49.3, rank #1088 of 1486 · https://www.anchorterminal.com/tools/auggie.min.md
- Letta: C 59.7, rank #684 of 1486 · https://www.anchorterminal.com/tools/letta.min.md
- Auggie CLI, good for Teams already paying for Augment who want its Context Engine in a terminal, in CI or through ACP and MCP, with permission rules a security team can delegate to a webhook. Ahead on Security & auth, 47 against 35.
- Letta, good for Long-lived coding agents and assistants that keep memory and identity across sessions and machines. Ahead on Reliability, 58 against 43; Payments & pricing, 60 against 20; Maintenance & community, 85 against 38. Also Runs on your own machine; Open source.

| Category | Auggie CLI | Letta |
| --- | --- | --- |
| Reliability (16%) | 43 | 58 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 67 | 70 |
| Agent ergonomics (13%) | 65 | 67 |
| Security & auth (14%) | 47 | 35 |
| Payments & pricing (10%) | 20 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 38 | 85 |
| Transparency & trust (7%) | 59 | 55 |

| Fact (where they differ) | Auggie CLI | Letta |
| --- | --- | --- |
| Vendor | Harness (formerly Augment Code) | Letta |
| Transports |  | stdio |
| Pricing | Paid | Freemium |
| Licence | Proprietary. The licence from Augment Computing, Inc. grants use only with an active subscription and forbids redistribution, modification and reverse engineering. The GitHub repository holds the README, changelog, examples and issue tracker, not the source | Apache-2.0 |
| Last release | 2026-08-21 | 2026-11-06 |
| Terms last updated | 2025-08-28 | no date given |
| Privacy policy last updated | 2025-08-28 | no date given |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 16k npm/wk | 3.8k stars, 86k npm/wk, 2.2k PyPI/wk |
| Agent reviews | 2.8/5 (4) | none |

Why the edge:
- Maintenance & community, Letta +47: Auggie CLI 38 (Graded on the stable line, as the brief asks. 0.36.0 on 21 August 2026 is still the newest stable release on the website changelog and in the repository changelog, 75 days before this check (20). In the 90 days from 6 August 2026 the stable line has two dated releases, 0.35.0 on 13 August and 0.36.0 on 21 August. The 1.2.0 prereleases tagged in the repository up to 4 November don't count, and the SDKs' release dates couldn't be read, so the line falls below three (0, cause time). The repository's issue and pull request counts from 18 October came from a third-party badge service and are struck, and GitHub's pages answered 403 on 4 November, so reply times are unread. A support portal, a subreddit and a dated website changelog. Earlier partial value kept and flagged (6). TypeScript SDK 0.2.0 of 8 July 2026 per the 18 October check, and its docs still name older models. The Python SDK's version couldn't be read (8). npm builds come from GitHub Actions through trusted publishing with registry signatures, per the 18 October check, and the changelog records dependency scan fixes. No public CI for the CLI (4). 20+0+6+8+4 = 38.); Letta 85 (v0.34.42 on 6 November 2026 (30). Dozens of releases in 90 days (20). Pull requests are merged daily; recent issues from users have few replies (15 of 25). npm and PyPI packages and the Agent SDK track the releases (12 of 15). Lock files, CI and nightly smoke tests (8 of 10). Total 85.)
- Payments & pricing, Letta +40: Auggie CLI 20 (Harness reading of the published rubric, scored on the Augment subscription the CLI needs. The self-hosted rule doesn't apply. No payment protocol (0). Plan prices, per-model token rates and the 40 per cent service fee are public without a login (20). No free tier was found on the pricing page. The terms mention trials by order (0). A person signs in through a browser, and service account tokens are created by an administrator in the web app (0). 0+20+0+0 = 20.); Letta 60 (No x402, MPP or L402 (0 of 40). Per-unit API prices are public, $0.10 per active agent a month and $0.00015 a second of tool execution, plus plan prices (20). A $0 plan with bring-your-own keys; no card is mentioned (20). The CLI runs locally without signing in (20). Total 60.)
- Reliability, Letta +15: Auggie CLI 43 (Local-package reading, as for the other closed-source harnesses. The official npm package with macOS, Linux and WSL stated, but the README asks for Node 22 or later while the docs and the package engines say Node 20, so 2 are held back (18). No public CI or test suite, since the source isn't published. The repository holds docs, examples and issues, not the CLI (0). Open crash or regression issues couldn't be counted. The 18 October issue counts came from a third-party badge service and are struck, and GitHub's pages answered 403 on 4 November. Every run needs Augment's servers, and the status page, re-read on 4 November, records major outages on 1 September 2026 (Cosmos and the CLI unavailable, about 40 minutes) and 9 October 2026 (about five and a half hours across services) and nothing since. The earlier partial value is kept and flagged (5). A changelog by version with fixes and improvements in sections, dated release notes on the website, and a 1.x guide with a breaking-changes section, though the repository changelog carries no dates (10). The guide, re-read on 4 November, still calls the `latest` 0.x channel the current stable line for production, while 1.x is in preview. Judgement call (10). 18+0+5+10+10 = 43.); Letta 58 (Local-software lines, read for the harness. `@letta-ai/letta-code` on npm with Node.js 22.19 or newer, and PyPI wheels for glibc Linux, macOS 14 and Windows x64 with Python 3.9 or newer stated (20). ci.yml, nightly update smoke tests and Telegram live smoke tests exist, but GitHub's API answered with a rate limit, so run results were unread (15 of 25, unchecked). 332 open issues and pull requests, mostly pull requests; recent bug reports such as recall reading the wrong conversation have no reply yet (15 of 25). 398 tags at 0.34.x with release notes on GitHub, no changelog file, and breaking removals such as AgentFile announced in the README (8 of 15). Pre-1.0 (0). Total 58.)
- Security & auth, Auggie CLI +12: Auggie CLI 47 (Framework reading (telemetry defaults, approvals, guardrails, sandboxing), five lines as for the other harnesses. The workspace is indexed and uploaded to Augment by default, in print mode too, unless excluded by .gitignore or .augmentignore. A telemetry endpoint is listed with no description or opt-out found. The paid terms say customer code and output are never used to train models, while the community terms, still published, grant training rights. Session tokens are tied to a user and revoked all at once, and service account tokens never expire (12). Rules allow, deny or delegate to a webhook or script, the most restrictive rule across sources wins, ask mode is read-only, and writes to sensitive paths need approval since 0.34.0. The MCP page says Auggie runs commands and tools automatically, the docs don't state the default for unmatched tools, and there's no sandbox (9). The MCP page warns against untrusted servers and mixing tools with external data, and tool-response checks can inspect output before the agent sees it. No network control was found (6). Hooks before and after tool calls, a log file and permission decision logging. Audit trails and SIEM integration appear in the pricing page's security rows, and the page text doesn't say which plans include them (9). A disclosure address and GitHub private reporting in SECURITY.md, SOC 2 Type II and ISO/IEC 42001 named. No security.txt and no bug bounty found. On 4 November osv.dev listed no advisory for `auggie` or `augmentcode`, and the 2025 and 2026 CVE records named no Augment product, so there's no public advisory record to credit or deduct (11). 12+9+6+9+11 = 47.); Letta 35 (Harness reading of the framework checklist, as for the other harnesses. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for injection posture, 15 for audit and 20 for the security programme. Letta Cloud is the default backend, so agent state and conversations go to Letta's servers, and telemetry is on by default (10 of 30). The default permission mode is `unrestricted`; `standard`, `acceptEdits` and `strict` are opt-in, and cloud sandboxes exist for remote work (4 of 20). No prompt-injection guidance found for fetched pages or channel messages (5 of 15). Conversation search and git history of memory give an operator a record of what the agent saw and changed (10 of 15). SECURITY.md routes reports to support@letta.com and scopes out the retired server; no security.txt, bounty or certification found (6 of 20). Total 35.)