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Heroes of Might and Magic 3Claude Code vs Gemini CLI
Gemini CLI is Google's open source (Apache 2.0) terminal agent, but since Jun 18, 2026 it has no free tier and serves enterprise Gemini Code Assist users on Google Cloud, with free and Google AI plan users moved to Antigravity CLI; Claude Code is Anthropic's paid agent, from $20 a month, which led Terminal-Bench 4.0 on Nov 6, 2026.
Gemini CLI is no longer the free alternative to Claude Code it was in 2025: its README says free individual access and the Google AI Pro and Ultra plans moved to Antigravity CLI on Jun 18, 2026, and Gemini CLI itself is now "maintained for enterprise Gemini Code Assist workflows on Google Cloud", still fully open source under Apache 2.0. For a person comparing terminal agents today, the Google side is two products: Gemini CLI for companies on Google Cloud, and Antigravity CLI, which comes with Google Antigravity's free plan and Google AI Pro at $19.99. Claude Code has no free plan and starts with Claude Pro at $20 a month; on the one current independent board, Terminal-Bench 4.0, it led on Nov 6, 2026 and no Gemini 4 or Antigravity run appeared.
Learn more: Gemini CLI on ai.vi.ki and Google Antigravity on ai.vi.ki.
Quick facts
| Claude Code | Gemini CLI | Antigravity CLI | |
|---|---|---|---|
| Maker | Anthropic | ||
| Who it is for | Claude Pro, Max, Ultra, Team, Enterprise, Console | Gemini Code Assist Standard and Enterprise on Google Cloud | Free, Google AI Pro and Ultra, Google Cloud |
| Free use | No | No ("No free tier or Google AI plans") | Yes, "Basic weekly rate limits" |
| Entry price | $20 a month | Code Assist license, or Gemini API key by usage | $0; Google AI Pro $19.99 |
| Source code | CLI source not published | Apache 2.0 | Not stated in Google's pages read |
| Models | Claude | Gemini; "Not tuned for the Gemini 4 series" | Gemini 4 Argon and Flash, plus Claude on paid plans |
| Terminal-Bench 4.0 | 64.85% (Opus 5.5) | No entry | No entry |
Sources: gemini-cli README, Antigravity pricing, Antigravity models, Claude plans and pricing and Terminal-Bench 4.0, read Nov 6, 2026.
Verdict by task
| Task | Pick | Why |
|---|---|---|
| Free terminal agent | Google (Antigravity CLI) | Free plan with weekly limits; Claude Code has none |
| Open source agent to fork | Gemini CLI | Apache 2.0 |
| Company on Google Cloud | Gemini CLI | Built for Code Assist licenses and Vertex AI |
| Hard terminal tasks, measured | Claude Code | First on Terminal-Bench 4.0; no Gemini 4 entry |
| Newest Gemini models | Antigravity CLI | Gemini CLI is not tuned for Gemini 4 |
| Paid plan at about $20 | Matter of taste | Google AI Pro $19.99 and Claude Pro $20 both include an agent; neither publishes numeric limits |
What changed in 2026
Until mid-2026 Gemini CLI was the terminal agent with the large free allowance, signed in with a personal Google account. On Jun 18, 2026 Google moved free individual use and the Google AI Pro and Ultra plans to Antigravity CLI, which its README calls an "Interactive multi-agent coding terminal" (gemini-cli). The Gemini CLI section of the README is now headed "No free tier or Google AI plans". Gemini CLI still signs in three ways: with Google, with a Gemini API key at usage-based billing, or through Vertex AI with a billing account. It ships a stable release every Tuesday, plus weekly previews and nightly builds.
The README also warns that Gemini CLI is "Not optimized for Gemini 4+": it is not tuned for Gemini 4 Argon or later releases. Anyone who wants Google's newest model in a terminal agent is pointed to Antigravity.
Price
Claude Code comes with Claude Pro at $20 a month ($17 billed annually), Max at $100 and Ultra at $200, and with Team and Enterprise seats; usage resets every five hours and every week and is shared with chat (Claude Usage Limits). Claude Free does not include it.
Google's ladder is almost the same: Google AI Pro at $19.99 a month, Ultra at $99.99 (five times Pro's limits) and $199.99 (twenty times). The difference is the bottom rung: Antigravity's Individuals plan is $0 with "a variety of agent models", unlimited Tab completions and command requests, and "Basic weekly rate limits". Google publishes no numbers for any of these limits; its plans page describes the free quota as "meaningful" and refreshed weekly, and Pro's as refreshed every five hours up to a weekly cap. Business use goes through Google Cloud from $30 a seat or pay as you go.
For pay-as-you-go use through an API, Google's Gemini API has a standing free tier on several Flash models; Anthropic offers new API users only "a small amount of free credits" (Pricing). Gemini 4 Argon has no free tier and costs $2 and $10 per million input and output tokens until Dec 1, 2026, then $4 and $20, the same as Claude Opus 5.5.
Models
Claude Code runs Claude models, Claude Opus 5.5 by default, each with a 1M-token context window (Model configuration). Gemini CLI runs Gemini models but, by its own README, is not tuned for the Gemini 4 series.
Antigravity runs Google's newest and, on paid plans, Anthropic's too. Its model list on Nov 6, 2026 offered Gemini 4 Argon on Pro, Ultra and Enterprise, Gemini 3.8 Flash on every plan, and Claude Sonnet 5.5 and Claude Opus 5.5 (Thinking) on Pro (not trials), Ultra and Enterprise. Free users also had Claude Sonnet 4.6 and Opus 4.6, but Google lists those for removal on Nov 18, 2026, after which Claude in Antigravity needs a paid plan.
Benchmarks
On the public Terminal-Bench 4.0 leaderboard, which scores agent and model together, Claude Code with Opus 5.5 held first place at 64.85% and Claude Code with Sonnet 5.5 second at 61.82% on Nov 6, 2026. No Gemini CLI, Antigravity or Gemini 4 run was listed; Google's best entry was a third-party harness, mini-SWE-agent, with Gemini 3.8 Flash at 19.09%. So there is no independent measurement of Google's own agents against Claude Code.
Google publishes its own table. It gives Gemini 4 Argon 57.1% and Claude Opus 5.5 59.6% on Terminal-Bench 4.0 as Artificial Analysis ran it, and its newer Gemini 4 Carbon 65.2%; Carbon is available only to selected cyber defenders. These are Google's figures. On Arena's WebDev board, people's votes put Claude Opus 5.5 first (1810), Gemini 4 Carbon fourth (1768, preliminary) and Gemini 4 Argon eleventh (1679) on Nov 6, 2026. See Claude Benchmarks and Claude vs Gemini.
Popularity
The 2026 Stack Overflow Developer Survey counted which coding agents people had used in the past year: Claude Code 65.5%, Google Antigravity 16.0% and Gemini Code Assist 14.6% (the survey's list did not name Gemini CLI separately). Antigravity is new: 62% of those using it as an editor admired it, the highest share of any editor in the survey, though only 0.4% used it regularly.
When to choose Gemini CLI or Antigravity
- You want a terminal agent for free: Antigravity CLI comes with Antigravity's $0 plan; Claude Code has no free option.
- You need an open source agent you can read and modify: Gemini CLI is Apache 2.0.
- Your company already pays for Gemini Code Assist on Google Cloud, or bills through Vertex AI.
- You want Google's ecosystem in the same subscription: Google AI Pro at $19.99 also brings Gemini 4 Argon in the Gemini app and 5 TB of storage (Gemini subscriptions).
- You want Claude and Gemini in one tool: Antigravity's paid plans include Claude Opus 5.5 and Sonnet 5.5.
When to choose Claude Code
- You want the agent with the best measured results: Claude Code held the top two Terminal-Bench 4.0 places on Nov 6, 2026, and no Google agent was on the board.
- You want one agent across the terminal, VS Code and JetBrains, the desktop app, cloud sessions and GitHub Actions.
- You rely on its extension points: hooks, subagents, plugins and MCP servers.
- You are on AWS or Azure as well as Google Cloud: Claude Code runs through Amazon Bedrock, Google Cloud and Microsoft Foundry (Overview).
Moving across is a command away: /import gemini brings Gemini CLI's instruction files, MCP servers, commands and skills into Claude Code (Commands).
Frequently asked questions
Is Gemini CLI still free? No. Since Jun 18, 2026 Gemini CLI has had no free tier and serves Gemini Code Assist Standard and Enterprise users on Google Cloud; Google moved free use to Antigravity CLI, which has a $0 plan with weekly limits. Claude Code has no free plan either: it needs Claude Pro at $20 a month or more.
Is Gemini CLI open source? Yes. Google's README calls it "fully open source (Apache 2.0)". Claude Code's CLI source is not published; its public GitHub repository holds plugins, examples and the changelog.
Is Claude Code better than Gemini CLI? On the only current independent board, Terminal-Bench 4.0 on Nov 6, 2026, Claude Code with Claude Opus 5.5 led at 64.85% and no Gemini CLI, Antigravity or Gemini 4 run was listed, so the two have not been measured side by side.
Can I use Claude models in Google's agent? Yes, in Antigravity: its paid Pro, Ultra and Enterprise plans include Claude Opus 5.5 and Claude Sonnet 5.5. Older Claude 4.6 models on the free plan are listed for removal on Nov 18, 2026.
Does Gemini CLI support Gemini 4 Argon? Google's README says Gemini CLI is not tuned for the Gemini 4 series; Google AI Pro and Ultra users get Gemini 4 Argon in Antigravity instead.
Sources
- gemini-cli README, Google on GitHub, read Nov 6, 2026
- Antigravity pricing, Google, read Nov 6, 2026
- Antigravity plans, Google, read Nov 6, 2026
- Antigravity models, Google, read Nov 6, 2026
- Google AI subscriptions, Google, read Nov 6, 2026
- Gemini subscriptions, US, Google, read Nov 6, 2026
- Gemini API pricing, Google, read Nov 6, 2026
- Gemini models, Google DeepMind, read Nov 6, 2026
- Plans and pricing, Anthropic, read Nov 6, 2026
- Pricing, Claude API Docs, read Nov 6, 2026
- Claude Code overview, Claude Code Docs, read Nov 6, 2026
- Model configuration, Claude Code Docs, read Nov 6, 2026
- Commands, Claude Code Docs, read Nov 6, 2026
- Terminal-Bench 4.0 leaderboard, tbench.ai, read Nov 6, 2026
- WebDev leaderboard, Arena, read Nov 6, 2026
- Stack Overflow Developer Survey 2026: AI data, Stack Overflow, read Nov 6, 2026
- Stack Overflow Developer Survey 2026: technology data, Stack Overflow, read Nov 6, 2026
Related
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Claude AlternativesThe main alternatives to Claude on Nov 6, 2026 are ChatGPT, Gemini, Microsoft Copilot, Grok and Perplexity as assistants; Codex, GitHub Copilot, Cursor and Google Antigravity as coding agents; and the OpenAI and Gemini APIs or open-weights models such as Llama, Gemma, Qwen and DeepSeek for developers.
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Claude API vs OpenAI APIAs of Nov 6, 2026, the Claude API and the OpenAI API charge the same list prices at the top ($10 / $50 per million tokens for Claude Fable 5.1 and GPT-6 Astra), but OpenAI is cheaper in the middle tier and sells voice, audio, images and embeddings that the Claude API does not. Claude charges no long-context surcharge up to 1M tokens and has cheaper cache reads.
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Claude Code vs CodexClaude Code and OpenAI's Codex are both coding agents for the terminal, the IDE and the cloud at the same $20 entry price; Claude Code led the public Terminal-Bench 4.0 board on Nov 6, 2026, while Codex is open source, cheaper per result and included in ChatGPT's Free and Go plans.
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Claude Code vs CursorClaude Code is Anthropic's coding agent for the terminal, IDEs and the cloud, included with Claude plans from $20 a month; Cursor is an AI code editor, owned by SpaceX since Aug 14, 2026, whose plans run from $8 and which can also run Claude models at Anthropic's list price on its $30 Premium plan and up.
- Claude Code vs GitHub CopilotGitHub Copilot is the cheaper way into AI coding, from $10 a month with unlimited completions and Claude, GPT, Gemini and Grok models billed as AI credits, while Claude Code is Anthropic's own agent, included with Claude plans from $20 a month, which led the Terminal-Bench 4.0 board on Nov 6, 2026.
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Claude vs ChatGPTClaude leads ChatGPT on coding benchmarks and in most 2026 writing tests, while ChatGPT wins on image generation, voice, its free tier and its sheer number of features. Both cost $20 a month at the main paid tier; as of Nov 6, 2026 ChatGPT also sells cheaper and costlier tiers.
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Claude vs GrokClaude scores far higher than Grok on coding and reasoning boards, while Grok wins on live X posts, image and video generation, a cheaper entry plan and a cheaper API. As of Nov 6, 2026, Grok comes in The X Subscription from $8 a month and Claude Pro costs $20.
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Claude vs Microsoft CopilotMicrosoft Copilot is free and built into Word, Excel, Outlook and Windows, and Microsoft 365 Copilot at work already offers Claude models in most commercial tenants; Claude's own apps go further on coding and long documents. As of Nov 6, 2026, Microsoft 365 Personal with Copilot costs $9.99 a month and Claude Pro $20.
See also
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Claude Usage LimitsClaude's paid plans have a session limit that resets five hours after your first message and a weekly limit that resets at a fixed time each week; Anthropic publishes multiples of Pro's allowance, not message counts.
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Claude Context WindowEvery current Claude model (Fable 5.1, Opus 5.5, Sonnet 5.5, Haiku 5.5) has a 1M-token context window on the API, about 555,000 words, and can write up to 128K tokens in one response. In the Claude apps the window is up to 1M on paid plans depending on the model, and long chats are summarized automatically near the limit.
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Claude vs GeminiGemini is the better value and the better pick for images, video, voice and Google apps, and its Gemini 4 models lead Arena's text board; Claude leads on coding agents and in published writing tests. As of Nov 6, 2026 Google AI Pro costs $19.99 a month and Claude Pro $20.