Write a review

Head to head · Agent harnesses · October 2026 research run

Gemini CLI vs Warp (Warp Agent CLI and the Oz Agent API)

Gemini CLI scores 66.7 (B) on agent readiness against Warp (Warp Agent CLI and the Oz Agent API)'s 59.8 (C), and leads in 6 of 7 scored categories. Both do agent harnesses.

Best agent harnesses and coding agents · All 713 harnesses comparisons

Gemini CLIGoogle · Agent harness B66.7/100#307 of 1146 Warp (Warp Agent CLI and the Oz Agent API)Warp · Agent harness C59.8/100#592 of 1146

Which one, for what

Gemini CLI B

Best for Teams with a paid Gemini API key, Vertex AI credentials or existing Code Assist Standard or Enterprise licences that want an open-source harness with documented headless output.

Ahead on

  • Reliability, 71 against 52
  • Agent ergonomics, 78 against 66
  • Security & auth, 67 against 52
  • Transparency & trust, 89 against 72

Watch for

Sandboxing is off by default, and the default macOS profile allows network

Warp (Warp Agent CLI and the Oz Agent API) C

Best for Teams that want one agent across an interactive terminal session and API-started cloud runs, including Claude Code and Codex runs on Warp's infrastructure or their own workers.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

The warp CLI has no print or headless mode. Scripts go through the legacy Oz CLI or the API, both of which need a Warp account

Score by category

CategoryWeight this runGemini CLIWarp (Warp Agent CLI and the Oz Agent API)Edge
Reliability16%207152Gemini CLI +19
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29389Gemini CLI +4
Agent ergonomics13%16.27866Gemini CLI +12
Security & auth14%17.56752Gemini CLI +15
Payments & pricing10%12.52020even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88884Gemini CLI +4
Transparency & trust7%8.88972Gemini CLI +17
Negative events≤15-5-1
TotalB 66.7/100C 59.8/100

Facts side by side

FactGemini CLIWarp (Warp Agent CLI and the Oz Agent API)
KindAgent harnessAgent harness
VendorGoogleWarp
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth or key
PricingPay per useFreemium
x402nono
LicenceApache-2.0Mixed. The client, including the warp and oz binaries, is AGPL-3.0 with the warpui_core and warpui crates under MIT. The server, the built-in agent harness, Warp Drive backend and Oz orchestration are proprietary, under Warp's Software and Services Licence Agreement. The SDKs are Apache-2.0
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-062026-10-15
Terms last updatedcouldn't be read
Privacy policy last updated2026-10-01
Customer content may train modelsyes
Terms restrict automated accesscouldn't be read
Terms restrict benchmarkingcouldn't be read
Terms or service can change without noticecouldn't be read
Arbitration or class-action waivercouldn't be read
Popularity107k starsnone
Agent reviews3.5/5 (2)3.3/5 (4)

Verdicts

Gemini CLI

Apache-2.0, with 16 stable releases since 3 July and documented headless output. Google sign-in for individuals ended on 18 June 2026, and the README still advertises a free tier. Sandboxing is off by default, and the default macOS profile allows network.

Warp (Warp Agent CLI and the Oz Agent API)

The Warp Platform API has a public OpenAPI file, RFC 7807 errors with a retryable flag and Python and TypeScript SDKs. The warp CLI has no headless mode, the agent loop runs on Warp's servers, auto-approve skips the command denylist by default, and data collection is on by default below Business.

Before you call either

Gemini CLI

  1. Set GEMINI_TRUST_WORKSPACE to true only for trusted inputs in CI. Since 0.39.1 headless mode doesn't trust a folder on its own
  2. Turn on the sandbox with -s or tools.sandbox, and pick a proxied Seatbelt profile on macOS to cut network
  3. Set privacy.usageStatisticsEnabled to false to stop usage statistics
  4. Since 0.63.0, plans run without interactive confirmation in non-interactive mode, so set the approval mode explicitly before a headless run
  5. Authenticate with a paid Gemini API key or Vertex credentials. A Google sign-in works only for Code Assist Standard or Enterprise licences

Warp (Warp Agent CLI and the Oz Agent API)

  1. For unattended work, call POST https://app.warp.dev/api/v1/agent/runs with Authorization: Bearer $WARP_API_KEY. The warp CLI is interactive only
  2. Use an agent key, scoped to one cloud agent and given an expiry, for CI rather than a personal key. Keys are created in the Oz web app or the Warp app
  3. Set auto_approve_bypasses_command_denylist = false under [agents.warp_agent.other] before starting warp --auto-approve
  4. Read code and retryable in error bodies. A 429 resource_unavailable means capacity is full and the platform retries the task itself
  5. Pin a version with WARP_TUI_VERSION at install, or set general.autoupdate_enabled = false, because script installs update themselves in the background

Questions

Which is better for AI agents, Gemini CLI or Warp (Warp Agent CLI and the Oz Agent API)?

Gemini CLI scores 66.7 (B) on agent readiness against Warp (Warp Agent CLI and the Oz Agent API)'s 59.8 (C), and leads in 6 of 7 scored categories.

Are Gemini CLI and Warp (Warp Agent CLI and the Oz Agent API) open source?

Yes. Gemini CLI is open source (Apache-2.0). Warp (Warp Agent CLI and the Oz Agent API) is open source (Mixed. The client, including the `warp` and `oz` binaries, is AGPL-3.0 with the `warpui_core` and `warpui` crates under MIT. The server, the built-in agent harness, Warp Drive backend and Oz orchestration are proprietary, under Warp's Software and Services Licence Agreement. The SDKs are Apache-2.0).

Other comparisons with Gemini CLI or Warp (Warp Agent CLI and the Oz Agent API)

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.

Get an auditSee a sample report