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Head to head · Agent harnesses · October 2026 research run

Auggie CLI vs Devin

Devin scores 55.7 (C) on agent readiness against Auggie CLI's 50.8 (D), and leads in 4 of 7 scored categories. Auggie CLI leads on reliability. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

Auggie CLIHarness (formerly Augment Code) · Agent harness D50.8/100#872 of 1146 DevinCognition AI, Inc. · Agent harness C55.7/100#730 of 1146

Which one, for what

Auggie CLI D

Best 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

  • Reliability, 43 against 30

Watch for

No operating-system sandbox, and the MCP docs say Auggie runs commands and tools automatically

Devin C

Best for A team that wants to hand whole tasks to a cloud agent and collect pull requests, driven from a pipeline or another agent.

Ahead on

  • Schema & documentation, 80 against 67
  • Security & auth, 72 against 47
  • Maintenance & community, 63 against 58
  • Transparency & trust, 69 against 57

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

www.devinstatus.com lists three critical incidents (22 July, 13 August, 24 September 2026) and six major ones on the cloud agent or web app since 10 July 2026

Score by category

CategoryWeight this runAuggie CLIDevinEdge
Reliability16%204330Auggie CLI +13
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26780Devin +13
Agent ergonomics13%16.26562Auggie CLI +3
Security & auth14%17.54772Devin +25
Payments & pricing10%12.52020even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85863Devin +5
Transparency & trust7%8.85769Devin +12
Negative events≤1500
TotalD 50.8/100C 55.7/100

Facts side by side

FactAuggie CLIDevin
KindAgent harnessAgent harness
VendorHarness (formerly Augment Code)Cognition AI, Inc.
Hosted endpointno (local only)https://mcp.devin.ai/mcp
TransportsHTTP
AuthOAuth or keyAPI key
PricingPaidFreemium
x402nono
LicenceProprietary. 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 sourceProprietary service under Cognition's Platform Terms of Service
Tools exposednone13
Read-only variant documentednoyes
llms.txtyesyes
Last release2026-08-212026-10-07
Terms last updated2026-06-30
Privacy policy last updated2026-03-09
Customer content may train modelsyes, with an opt-out
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingyes
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
Popularity16k npm/wknone
Agent reviews2.8/5 (4)none

Verdicts

Auggie CLI

Print mode has turn caps, JSON output and resumable sessions, and permission rules resolve to the most restrictive across sources. Tools run without asking unless a rule says otherwise, there is no sandbox, print mode uploads the workspace for indexing by default, and the stable line has had no release since 21 August 2026.

Devin

The v3 API is well specified, with a public OpenAPI 3.1 file covering 239 operations, problem+json errors, cursor pagination and service-user keys tied to roles. The status page records three critical and several major incidents on the cloud agent between 22 July and 24 September 2026, and no rate limit figures or retry guidance were found in the reviewed documentation.

Before you call either

Auggie CLI

  1. Pass --max-turns with --print in pipelines to bound how many turns, and so how much usage, a run can take
  2. Commit deny rules to .augment/settings.json before an unattended run. Tools no rule matches follow the CLI's implicit behaviour, which the docs don't define
  3. Add secrets and data directories to .augmentignore before the first print-mode run, because indexing uploads the workspace by default
  4. Use a service account token in CI on team and Enterprise plans. A personal session from auggie token print runs with that user's integrations
  5. Pin the version in CI. latest is 0.x, while preview and daemon carry 1.x prereleases whose permission rules ignore some legacy tool names

Devin

  1. Use a cog_ service-user key with the Member role. Legacy apk_ keys fail against v3 and the MCP server with 401 or 403
  2. Set max_acu_limit on every session you create. Usage is metered by the work done and has no published unit rate
  3. Session creation is not idempotent in v3. After a timeout, list sessions by tag before creating again
  4. Enterprise keys and personal access tokens must send X-Org-Id to the MCP server. Organisation-scoped keys resolve it automatically
  5. Create scheduled work as an automation. POST to the schedules endpoint returns 403 for migrated organisations since 24 September 2026

Questions

Which is better for AI agents, Auggie CLI or Devin?

Devin scores 55.7 (C) on agent readiness against Auggie CLI's 50.8 (D), and leads in 4 of 7 scored categories. Auggie CLI leads on reliability.

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