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Agentic harness comparison

Claude Code vs Gemini CLI

Compared on where each one runs, which editors it supports, how autonomous it is, and how it bills — the four things that actually decide Claude Code vs Gemini CLI. Rankings reflect fit and trade-offs, not a single universal winner; partner links, when present, do not replace that methodology.

Details last verified October 25, 2026

Anthropic

Claude Code

Terminal, IDE plugins, desktop, and browser · Agentic

vs

Google

Gemini CLI

Open-source terminal client (enterprise / paid-key access) · Agentic

AI harness specification comparison
SpecificationClaude CodeGemini CLI
VendorAnthropicGoogle
Runs inTerminal, IDE plugins, desktop, and browserOpen-source terminal client (enterprise / paid-key access)
Editor supportTerminal CLI, VS Code / Cursor, JetBrains, Desktop app, claude.ai/codeAny (editor-agnostic), Gemini Code Assist IDE extension (Standard/Enterprise)
AutonomyAgenticAgentic
Pricing modelHybridHybrid
Requires changing editorNoNo

Dates refer to the linked source’s publication or capture unless it explicitly states when the benchmark was measured. Values we could not confirm are shown as “Not verified” rather than estimated.

AgenticHybrid

Claude Code

Anthropic's agentic coding tool runs in the terminal, supported IDEs, a desktop app and the browser. Configuration and permissions vary by surface and organisation. Subscription sign-in shares eligible Claude plan usage; Anthropic Console/API and third-party provider billing are separate paths.

Best for

  • Multi-file refactors
  • Migrations
  • Delegated engineering tasks

Watch out

Claude Code is included with Pro, Max, Team and Enterprise; Free does not include it. Web prices: Pro $20/month or $200 billed yearly; Max 5x $100/month and Max 20x $200/month; Team Standard $25/seat/month or $20 with annual billing, Premium $125 or $100 respectively; Enterprise $20/seat/month with annual billing, a 20-seat minimum, plus API-rate usage (https://claude.com/pricing). API credentials use a separate Platform balance. The current page advertises $100/$200 monthly API credits on Max 5x/20x and up to $500 pooled Team API credits, subject to the linked conditions; these are not extra Claude Code message allowances. Model selection depends on account, user/org settings, provider and client version: Default is a recommended/account-configured choice, not a fixed model alias. Enterprise accounts can record a saved /model choice from v2.1.280; without an organisation default, Default can resolve to that choice and selecting Default does not erase it. Anthropic API opus and sonnet resolve to Opus 5.5 and Sonnet 5.5. Sonnet 5.5 requires v2.1.284+, Opus 5.5 v2.1.280+. Third-party provider aliases can resolve to older versions. Fable normally resolves to Fable 5.1, except Claude apps gateway sessions use Fable 5; neither is an account-type default. Fable can bill to usage credits depending on plan and seat; the current model picker marks that requirement. The current referenced model documentation does not establish a universal 50% Max weekly entitlement, so check account eligibility instead of relying on an older quota claim. Interactive credit consent is not a guarantee for automation: non-interactive -p requests can bill credits without asking. Five-hour and weekly limits depend on plan/model; check the account usage page (https://code.claude.com/docs/en/model-config; https://support.claude.com/en/articles/11049741-what-is-the-max-plan). Native Windows supports shell tools, but Claude's sandbox is available on macOS, Linux and WSL2, not native Windows or WSL1. It is off by default and covers shell execution, not every file tool, MCP server or hook (https://code.claude.com/docs/en/sandboxing).

AgenticHybrid

Gemini CLI

Google's Apache 2.0 terminal agent remains available through eligible Gemini Code Assist Standard/Enterprise and paid Gemini or Gemini Enterprise Agent Platform API access. Consumer Code Assist, Google AI Pro and Ultra requests stopped June 18, 2026; Google directs those users to Antigravity CLI.

Best for

  • Teams with a Gemini Code Assist Standard or Enterprise licence
  • Google Cloud organisations that already govern Gemini access
  • Existing Gemini CLI scripts and MCP setups billed to a paid Gemini API key

Watch out

The consumer 60 requests/minute and 1,000/day offer is discontinued. Current repository/authentication docs still describe consumer Google sign-in and free access, contradicting Google's dated deprecation and transition notices; those notices govern the service change. Organization-licensed and paid-key access remain separate routes with their own billing and terms. Do not describe all Google sign-in or the entire open-source client as retired. Sandbox behavior requires explicit configuration and does not follow from Apache licensing. Privacy and usage statistics depend on authentication/backend; no universal no-training or zero-retention claim is established. Antigravity CLI does not promise one-to-one feature parity. No product-wide numeric benchmark is asserted.

Common questions

Claude Code vs Gemini CLI

Answered from the verified figures on this page rather than general guidance.

Do I have to change editor to use Claude Code or Gemini CLI?
Neither does. Claude Code runs in Terminal CLI, VS Code / Cursor, JetBrains, Desktop app, claude.ai/code and Gemini CLI runs in the open-source terminal client (enterprise / paid-key access) alongside any editor, so people keep the setup they already have.
How are Claude Code and Gemini CLI priced?
Both are hybrid. The headline seat or plan price is not the heavy-agent bill — included credits, shared pools, and overages dominate once you loop agents hard. Estimate cost per successful task and set spend caps.
Is Claude Code or Gemini CLI better for large refactors?
Both carry our agentic classification. That label does not establish equal refactoring quality; compare correctness, tool reliability, review time and cost on representative tasks.
Will my project rules transfer between Claude Code and Gemini CLI?
Usually not automatically. Cursor rules, CLAUDE.md, AGENTS.md, and extension-specific configs are different conventions. Keep one source of truth in the repository (commonly AGENTS.md) and copy or link into each tool’s native format so switching does not wipe months of project teaching.
Does Claude Code require a Max plan?
No. Claude Pro includes Claude Code with a shared usage pool alongside Claude chat. Max raises limits; Free Claude.ai chat does not include Claude Code. An ANTHROPIC_API_KEY can bill Console/API instead of the subscription pool.
Do coding agents replace code review?
No. Agents can draft patches faster, but they do not remove the need for human review of plans, tool calls, permissions, diffs, tests, and rollback paths. Treat autonomy as a reason for stronger review, not less — see the coding assistant rollout guide at /ai-harnesses/guides/coding-assistant-rollout-guide.
Should we harden MCP before rolling out a coding agent?
Yes for any agent that can install MCP servers or run tools. Maintain a short allowlist, review each server’s folder and network access before install, fail closed on unknown tools, and log tool calls. .cursorignore and similar rules do not block MCP or shell access once a command is approved.

Next step

Which one fits

Autonomy and editor constraints decide this far more reliably than a benchmark score.

If most of your week is small, frequent edits, an assistive workflow beats delegation and an agentic harness sits idle while billing. If you regularly hand over work spanning many files, the reverse is true.

Where one tool requires changing editor and the other does not, that difference usually outweighs any capability gap across a team — rollouts fail on adoption, not capability.

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