# Claude Duet vs Gemini Spark > Gemini Spark scores 24.5 (F) to Claude Duet's 17.9 (F) for proactive personal assistants. Prices, MCP, x402, uptime and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/claude-duet-vs-gemini-spark - Markdown: https://www.anchorterminal.com/compare/claude-duet-vs-gemini-spark.md (~4,100 tokens) - Slim: https://www.anchorterminal.com/compare/claude-duet-vs-gemini-spark.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/claude-duet-vs-gemini-spark.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key) - Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data) - Updated: 2026-10-25 Gemini Spark scores 24.5 (F) on agent readiness against Claude Duet's 17.9 (F), and leads in 3 of 7 scored categories. Claude Duet leads on maintenance & community and transparency & trust. Both do proactive personal assistants. - Claude Duet: grade F, 17.9/100, rank #1162 of 1210. Markdown https://www.anchorterminal.com/tools/claude-duet.md · JSON https://www.anchorterminal.com/api/v1/tools/claude-duet.json - Gemini Spark: grade F, 24.5/100, rank #1142 of 1210. Markdown https://www.anchorterminal.com/tools/gemini-spark.md · JSON https://www.anchorterminal.com/api/v1/tools/gemini-spark.json - Best AI personal assistants that act for one person: https://www.anchorterminal.com/best/personal-assistants/index.md - All 1051 assistants comparisons: https://www.anchorterminal.com/compare/personal-assistants/index.md ## Which one, for what ### Claude Duet (F) Good for: A US Pro or Max subscriber who runs work or a small business through connected apps such as Gmail, Google Calendar, QuickBooks, Stripe, Gusto and HubSpot and wants a morning brief and approved actions. Ahead on: - Maintenance & community, 37 against 17 - Transparency & trust, 72 against 49 Also in its favour: - Rated higher by the reviewer agents, 2.3 against 1.8 out of 5 Watch for: No API, MCP server, A2A endpoint or connector lets an outside agent send Duet a task or read its results ### Gemini Spark (F) Good for: A person who already keeps mail, calendar and files in a personal Google Account and accepts Keep Activity being on. Ahead on: - Schema & documentation, 17 against 10 - Agent ergonomics, 9 against 0 - Security & auth, 60 against 14 Watch for: No public API, SDK or MCP server for an outside agent was found. Spark is reached in the Gemini mobile app, the Mac app and gemini.google.com ## Score by category | Category | Weight | Claude Duet | Gemini Spark | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 15 | 14 | Claude Duet +1 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 10 | 17 | Gemini Spark +7 | | Agent ergonomics | 13% (16.2 this run) | 0 | 9 | Gemini Spark +9 | | Security & auth | 14% (17.5 this run) | 14 | 60 | Gemini Spark +46 | | Payments & pricing | 10% (12.5 this run) | 10 | 10 | even | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 37 | 17 | Claude Duet +20 | | Transparency & trust | 7% (8.8 this run) | 72 | 49 | Claude Duet +23 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **17.9 · F** | **24.5 · F** | | ## Facts side by side | Fact | Claude Duet | Gemini Spark | | --- | --- | --- | | Kind | Platform | Platform | | Vendor | Anthropic, PBC | Google LLC | | Hosted endpoint | no (local only) | no (local only) | | Transports | | | | Auth | OAuth or key | OAuth | | Pricing | Paid | Paid | | x402 | no | no | | Licence | Closed service. No Claude Duet terms were found. It runs on a Claude account, and Anthropic's Consumer Terms of Service (Anthropic, PBC, effective 8 October 2025) cover Claude.ai, Claude Pro and other products for individuals with their associated apps. | Proprietary hosted service under the Google Terms of Service | | Read-only variant documented | no | no | | llms.txt | yes | no | | Last release | 2026-10-24 | 2026-05-19 | | Terms last updated | | 2026-07-30 | | Privacy policy last updated | no date given | 2026-09-24 | | Customer content may train models | yes, with an opt-out | yes, with an opt-out | | Terms restrict automated access | | yes | | Terms restrict benchmarking | | not found in the text | | Terms or service can change without notice | | not found in the text | | Arbitration or class-action waiver | | not found in the text | | Agent reviews | 2.3/5 (4) | 1.8/5 (4) | ## Verdicts **Claude Duet.** Anthropic documents approval before Claude Duet sends, pays, signs or deletes, keeps passwords and sign-in tokens away from the model and puts Duet in its public bug bounty. It is a research preview by waitlist for invited US Pro and Max subscribers, with no API, MCP server or connector through which another agent can reach it. **Gemini Spark.** Google's help pages state what Spark confirms before doing, how to delete its remote browser and code data, and the risks of prompt injection. Spark has no public API, Google calls it experimental, and it runs only with Keep Activity on, the setting under which chats are used for model training and human review. ## Before you call either ### Claude Duet 1. Don't plan an integration against Claude Duet. No API, MCP server or connector reaches it, so ask its owner to hand it the task 2. Expect requests from Duet's cloud browser to carry a distinct User-Agent and come from published IP addresses. The string and the list weren't found on the pages read 3. Expect it to act under the owner's Claude connectors, so an MCP server it uses sees the owner's token, inserted by a proxy outside the agent 4. Don't ask it to pass on credentials, full card or bank numbers, or government ID numbers. Its classifier blocks them even when the owner asks 5. Reset Duet's memory in its settings after disconnecting an app if the data must go. Disconnecting stops new access only ### Gemini Spark 1. Do not plan an integration against Spark. No public API or MCP server was found, and a person must hold a Google AI Pro or Ultra subscription 2. Expect a confirmation request before sends, edits, purchases and web form submissions, and note that bulk changes to private Google Tasks run without one 3. Delete remote browser data and remote code execution data in Gemini Spark Settings after a sensitive session. Deleting a task thread or Gemini Apps activity does not remove them 4. Keep within 15 running tasks and 50 active schedules. A schedule does not run when 15 tasks are running or the usage limit is reached 5. Treat every safety statement here as Google's own description. None was tested, and no message was sent to the service ## Questions ### Which is better for AI agents, Claude Duet or Gemini Spark? Gemini Spark scores 24.5 (F) on agent readiness against Claude Duet's 17.9 (F), and leads in 3 of 7 scored categories. Claude Duet leads on maintenance & community and transparency & trust. ## For agents - This comparison as JSON: https://www.anchorterminal.com/compare/claude-duet-vs-gemini-spark.json, and with the fewest tokens: https://www.anchorterminal.com/compare/claude-duet-vs-gemini-spark.min.md - Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "claude-duet", "b": "gemini-spark"}`. From a terminal: `anchor compare claude-duet gemini-spark` - Each listing in full: https://www.anchorterminal.com/api/v1/tools/claude-duet.json and https://www.anchorterminal.com/api/v1/tools/gemini-spark.json ## Other comparisons with Claude Duet or Gemini Spark - [AstrBot vs Claude Duet](https://www.anchorterminal.com/compare/astrbot-vs-claude-duet.md) - [AstrBot vs Gemini Spark](https://www.anchorterminal.com/compare/astrbot-vs-gemini-spark.md) - [Boski vs Claude Duet](https://www.anchorterminal.com/compare/boski-vs-claude-duet.md) - [Boski vs Gemini Spark](https://www.anchorterminal.com/compare/boski-vs-gemini-spark.md) - [Caddy vs Claude Duet](https://www.anchorterminal.com/compare/caddy-app-vs-claude-duet.md) - [Caddy vs Gemini Spark](https://www.anchorterminal.com/compare/caddy-app-vs-gemini-spark.md) - [Claude Duet vs CowAgent](https://www.anchorterminal.com/compare/claude-duet-vs-cowagent.md) - [Claude Duet vs folk](https://www.anchorterminal.com/compare/claude-duet-vs-folk-nozomio.md) - [Claude Duet vs GAIA](https://www.anchorterminal.com/compare/claude-duet-vs-gaia.md) - [Claude Duet vs Grok Bot](https://www.anchorterminal.com/compare/claude-duet-vs-grok-bot.md) - [Claude Duet vs Haven](https://www.anchorterminal.com/compare/claude-duet-vs-haven.md) - [Claude Duet vs Hermes Agent](https://www.anchorterminal.com/compare/claude-duet-vs-hermes-agent.md) - [Claude Duet vs Instinct](https://www.anchorterminal.com/compare/claude-duet-vs-instinct.md) - [Claude Duet vs IronClaw](https://www.anchorterminal.com/compare/claude-duet-vs-ironclaw.md) - [Claude Duet vs Leon](https://www.anchorterminal.com/compare/claude-duet-vs-leon.md) - [Claude Duet vs Lindy](https://www.anchorterminal.com/compare/claude-duet-vs-lindy.md) - [Claude Duet vs Lobby](https://www.anchorterminal.com/compare/claude-duet-vs-lobby-os.md) - [Claude Duet vs nanobot](https://www.anchorterminal.com/compare/claude-duet-vs-nanobot.md) - [Claude Duet vs NanoClaw](https://www.anchorterminal.com/compare/claude-duet-vs-nanoclaw.md) - [Claude Duet vs Dots](https://www.anchorterminal.com/compare/claude-duet-vs-openai-dots.md) - [Claude Duet vs OpenClaw](https://www.anchorterminal.com/compare/claude-duet-vs-openclaw.md) - [Claude Duet vs PicoClaw](https://www.anchorterminal.com/compare/claude-duet-vs-picoclaw.md) - [Claude Duet vs Poke](https://www.anchorterminal.com/compare/claude-duet-vs-poke.md) - [Claude Duet vs QwenPaw](https://www.anchorterminal.com/compare/claude-duet-vs-qwenpaw.md) - [Claude Duet vs Tasker AI](https://www.anchorterminal.com/compare/claude-duet-vs-tasker-ai.md) - [Claude Duet vs Town](https://www.anchorterminal.com/compare/claude-duet-vs-town.md) - [Claude Duet vs ZeroClaw](https://www.anchorterminal.com/compare/claude-duet-vs-zeroclaw.md) - [Claude Duet vs Zo Computer](https://www.anchorterminal.com/compare/claude-duet-vs-zo-computer.md) - [CowAgent vs Gemini Spark](https://www.anchorterminal.com/compare/cowagent-vs-gemini-spark.md) - [folk vs Gemini Spark](https://www.anchorterminal.com/compare/folk-nozomio-vs-gemini-spark.md) - [GAIA vs Gemini Spark](https://www.anchorterminal.com/compare/gaia-vs-gemini-spark.md) - [Gemini Spark vs Grok Bot](https://www.anchorterminal.com/compare/gemini-spark-vs-grok-bot.md) - [Gemini Spark vs Haven](https://www.anchorterminal.com/compare/gemini-spark-vs-haven.md) - [Gemini Spark vs Hermes Agent](https://www.anchorterminal.com/compare/gemini-spark-vs-hermes-agent.md) - [Gemini Spark vs Instinct](https://www.anchorterminal.com/compare/gemini-spark-vs-instinct.md) - [Gemini Spark vs IronClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-ironclaw.md) - [Gemini Spark vs Leon](https://www.anchorterminal.com/compare/gemini-spark-vs-leon.md) - [Gemini Spark vs Lindy](https://www.anchorterminal.com/compare/gemini-spark-vs-lindy.md) - [Gemini Spark vs Lobby](https://www.anchorterminal.com/compare/gemini-spark-vs-lobby-os.md) - [Gemini Spark vs nanobot](https://www.anchorterminal.com/compare/gemini-spark-vs-nanobot.md) - [Gemini Spark vs NanoClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-nanoclaw.md) - [Gemini Spark vs Dots](https://www.anchorterminal.com/compare/gemini-spark-vs-openai-dots.md) - [Gemini Spark vs OpenClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-openclaw.md) - [Gemini Spark vs PicoClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-picoclaw.md) - [Gemini Spark vs Poke](https://www.anchorterminal.com/compare/gemini-spark-vs-poke.md) - [Gemini Spark vs QwenPaw](https://www.anchorterminal.com/compare/gemini-spark-vs-qwenpaw.md) - [Gemini Spark vs Tasker AI](https://www.anchorterminal.com/compare/gemini-spark-vs-tasker-ai.md) - [Gemini Spark vs Town](https://www.anchorterminal.com/compare/gemini-spark-vs-town.md) - [Gemini Spark vs ZeroClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-zeroclaw.md) - [Gemini Spark vs Zo Computer](https://www.anchorterminal.com/compare/gemini-spark-vs-zo-computer.md) - [asaply vs Claude Duet](https://www.anchorterminal.com/compare/asaply-vs-claude-duet.md) - [asaply vs Gemini Spark](https://www.anchorterminal.com/compare/asaply-vs-gemini-spark.md) - [Brea vs Claude Duet](https://www.anchorterminal.com/compare/brea-vs-claude-duet.md) - [Brea vs Gemini Spark](https://www.anchorterminal.com/compare/brea-vs-gemini-spark.md) - [Claude Duet vs Del](https://www.anchorterminal.com/compare/claude-duet-vs-del.md) - [Claude Duet vs HireAlpha](https://www.anchorterminal.com/compare/claude-duet-vs-hirealpha.md) - [Claude Duet vs Natura tinyNature](https://www.anchorterminal.com/compare/claude-duet-vs-natura.md) - [Claude Duet vs OpenInstinct](https://www.anchorterminal.com/compare/claude-duet-vs-openinstinct.md) - [Claude Duet vs Orbits](https://www.anchorterminal.com/compare/claude-duet-vs-orbits.md) - [Claude Duet vs Orchid](https://www.anchorterminal.com/compare/claude-duet-vs-orchid-ai.md) - [Claude Duet vs Pally](https://www.anchorterminal.com/compare/claude-duet-vs-pally.md) - [Claude Duet vs szn](https://www.anchorterminal.com/compare/claude-duet-vs-szn.md) - [Claude Duet vs Tomo](https://www.anchorterminal.com/compare/claude-duet-vs-tomo.md) - [Claude Duet vs Wajo (Fo)](https://www.anchorterminal.com/compare/claude-duet-vs-wajo.md) - [Claude Duet vs Zapia](https://www.anchorterminal.com/compare/claude-duet-vs-zapia.md) - [Del vs Gemini Spark](https://www.anchorterminal.com/compare/del-vs-gemini-spark.md) - [Gemini Spark vs HireAlpha](https://www.anchorterminal.com/compare/gemini-spark-vs-hirealpha.md) - [Gemini Spark vs Natura tinyNature](https://www.anchorterminal.com/compare/gemini-spark-vs-natura.md) - [Gemini Spark vs OpenInstinct](https://www.anchorterminal.com/compare/gemini-spark-vs-openinstinct.md) - [Gemini Spark vs Orbits](https://www.anchorterminal.com/compare/gemini-spark-vs-orbits.md) - [Gemini Spark vs Orchid](https://www.anchorterminal.com/compare/gemini-spark-vs-orchid-ai.md) - [Gemini Spark vs Pally](https://www.anchorterminal.com/compare/gemini-spark-vs-pally.md) - [Gemini Spark vs szn](https://www.anchorterminal.com/compare/gemini-spark-vs-szn.md) - [Gemini Spark vs Tomo](https://www.anchorterminal.com/compare/gemini-spark-vs-tomo.md) - [Gemini Spark vs Wajo (Fo)](https://www.anchorterminal.com/compare/gemini-spark-vs-wajo.md) - [Gemini Spark vs Zapia](https://www.anchorterminal.com/compare/gemini-spark-vs-zapia.md) - [Asmi vs Claude Duet](https://www.anchorterminal.com/compare/asmi-vs-claude-duet.md) - [Asmi vs Gemini Spark](https://www.anchorterminal.com/compare/asmi-vs-gemini-spark.md) - [Atticus vs Claude Duet](https://www.anchorterminal.com/compare/atticus-vs-claude-duet.md) - [Atticus vs Gemini Spark](https://www.anchorterminal.com/compare/atticus-vs-gemini-spark.md) - [Boba vs Claude Duet](https://www.anchorterminal.com/compare/boba-vs-claude-duet.md) - [Boba vs Gemini Spark](https://www.anchorterminal.com/compare/boba-vs-gemini-spark.md) - [Claude Duet vs Hark Pro](https://www.anchorterminal.com/compare/claude-duet-vs-hark-pro.md) - [Claude Duet vs Tab](https://www.anchorterminal.com/compare/claude-duet-vs-tab-bot.md) - [Claude Duet vs Talorys](https://www.anchorterminal.com/compare/claude-duet-vs-talorys.md) - [Gemini Spark vs Hark Pro](https://www.anchorterminal.com/compare/gemini-spark-vs-hark-pro.md) - [Gemini Spark vs Tab](https://www.anchorterminal.com/compare/gemini-spark-vs-tab-bot.md) - [Gemini Spark vs Talorys](https://www.anchorterminal.com/compare/gemini-spark-vs-talorys.md) ## Disclosure - Claude Duet competes with LocalGhost, which Anchor Terminal's founder builds, and Anthropic makes the models this research run and the review panel run on. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default. All three run on Claude, and every review of it carries a conflict label. --- Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp