Which AI Assistants product is most agent-friendly?

ChatGPT ranks first in ProductArena's AI Assistants arena, with a PA Score of 38/100 — see the full evidence-graded leaderboard at https://ultrametric.ai/productarena/arena/ai-assistants.

How is this measured?

Every product is judged against a shared taxonomy of user stories using cited evidence (vendor docs, GitHub, community sources, or a hands-on probe) — never opinion. See https://ultrametric.ai/productarena/methodology for the full scoring writeup.

Arena

AI Assistants arenaAI Assistants

General-purpose AI chat assistants for everyday knowledge work, judged on research depth, file and data analysis, memory, connectors, and how far each assistant can act autonomously on a user's behalf.

52 user stories · 468 judged cells · updated 2026-09-16 · Evidence as of 2026-09-16

Buyer checklist →Procurement report →

Leaderboard — every product ranked by evidenceLeaderboard

Rank by

									Access	Verification
1	ChatGPT free-tier vs Claude ↗	38/100 C	49/100	86/100	3/100	7/100	58/100	Popular	MCP✓CLI✓API~	8/41 verified	9/100 integrity
2	Claude free-tier vs ChatGPT ↗	29/100 C	28/100	86/100	0/100	15/100	29/100	Popular	MCP✓CLI!API~	6/37 verified · 1 disputed	0/100 integrity
3	Grok free-tier vs ChatGPT ↗	26/100 C	45/100	27/100	33/100	6/100	6/100		MCP✓CLI~API✓	13/25 verified · 1 disputed	44/100 integrity
4	Perplexity free-tier vs ChatGPT ↗	25/100 C	49/100	14/100	33/100	6/100	2/100	Popular	MCP✓CLI✓API✓	10/25 verified · 8 disputed	0/100 integrity
5	Poke free-tier vs ChatGPT ↗	24/100 C	42/100	56/100	0/100	5/100	11/100		MCP✓CLI~API~	10/22 verified	40/100 integrity
6	Martin subscription-flat vs ChatGPT ↗	19/100 C	15/100	70/100	0/100	0/100	29/100		MCP—CLI—API—	7/15 verified	43/100 integrity
7	Gemini free-tier vs ChatGPT ↗	17/100 C	9/100	70/100	untested	0/100	23/100	Popular	MCP—CLI~API~	7/32 verified · 1 disputed	6/100 integrity
8	Muse free-tier vs ChatGPT ↗	8/100 D	0/100	52/100	untested	untested	3/100		MCP—CLI—API—	3/15 verified · 2 disputed	0/100 integrity
9	Microsoft Copilot free-tier vs ChatGPT ↗	4/100 C	0/100	24/100	0/100	0/100	5/100	Popular	MCP—CLI—API—	8/24 verified · 4 disputed	0/100 integrity

Best by user type — persona-weighted winnersBest by user type

Per persona, the product with the highest persona-weighted coverage over just that persona's stories — not the same ranking as the overall PA Score leaderboard above.

Best for knowledge-worker

Claude

76/100

Runner-up: Gemini (60/100)

12 knowledge-worker stories scored

Best for power-user

ChatGPT

72/100

Runner-up: Claude (71/100)

10 power-user stories scored

Best for team-admin

Grok

36/100

Runner-up: ChatGPT (24/100)

1 team-admin story scored

Best for ai-native

ChatGPT

40/100

Runner-up: Claude (36/100)

29 ai-native stories scored

Story matrix — every product × every judged storyStory matrix

Filter by persona52/52 stories shown · legend

Agenticness — how well agents can access and operate the productAgenticness

Agent access

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Agenticness — how well agents can access and operate the productPoint an agent at llms.txt or agent-oriented docs	ai-native	partialT 5/10	fullT 7/10	none 0/10	fullT 9/10	none 0/10	fullT 9/10	n/a	fullT 8/10	fullT 9/10
Agenticness — how well agents can access and operate the productRun the product headlessly / in CI for automation	ai-native	fullC 7/10	none 0/10	none 0/10	fullT 7/10	n/a	partialT 6/10	n/a	partialT 6/10	n/a
Agenticness — how well agents can access and operate the productPlug MCP servers into this product so it can use their tools	ai-native	fullC 8/10	fullT 9/10	none 0/10	none 0/10	none 0/10	fullC 7/10	none 0/10	fullT 8/10	none 0/10
Agenticness — how well agents can access and operate the productConnect an agent via an official MCP server	ai-native	fullC 8/10	n/a	n/a	fullT 8/10	n/a	n/a	n/a	n/a	n/a
Agenticness — how well agents can access and operate the productUse an official CLI	ai-native	fullT 7/10	disputedD 6/10	partialX 4/10	fullT 8/10	none 0/10	partialX 3/10	none 0/10	partialC 6/10	n/a
Agenticness — how well agents can access and operate the productDrive the product through a documented public API	ai-native	partialT 4/10	partialT 3/10	partialX 5/10	fullT 9/10	none 0/10	fullT 9/10	none 0/10	partialT 6/10	none 0/10
Agenticness — how well agents can access and operate the productIssue scoped/least-privilege API credentials for an agent	ai-native	partialC 4/10	none 0/10	n/a	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10
Agenticness — how well agents can access and operate the productBuild against official SDKs	ai-native	partialT 3/10	none 0/10	none 0/10	partialT 4/10	none 0/10	partialT 3/10	none 0/10	partialT 4/10	none 0/10
Agenticness — how well agents can access and operate the productSubscribe to events via webhooks	ai-native	partialC 4/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	partialC 4/10	n/a

Agentic features

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Agenticness — how well agents can access and operate the productGet AI-generated insights and suggestions from my data inside the product	ai-native	fullC 8/10	fullC 8/10	fullX 8/10	partialX 4/10	disputedD 5/10	partialX 6/10	partialC 5/10	partialC 4/10	partialC 6/10
Agenticness — how well agents can access and operate the productSet up automations that run autonomously in the background	ai-native	fullC 8/10	fullC 8/10	partialC 6/10	none 0/10	partialC 4/10	partialC 4/10	disputedD 5/10	partialT 5/10	fullX 8/10
Agenticness — how well agents can access and operate the productDelegate tasks to a built-in AI assistant inside the product	ai-native	fullC 9/10	fullC 9/10	fullX 8/10	disputedD 5/10	partialX 6/10	disputedD 6/10	fullC 8/10	fullT 8/10	fullX 8/10
Agenticness — how well agents can access and operate the productOperate the product with natural-language commands	ai-native	fullX 9/10	fullX 9/10	fullC 8/10	disputedD 6/10	disputedD 5/10	partialX 6/10	fullX 7/10	fullT 8/10	fullX 8/10

Api quality

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Agenticness — how well agents can access and operate the productExplore an interactive API reference with runnable examples	ai-native	none 0/10	none 0/10	n/a	partialT 4/10	n/a	partialT 4/10	n/a	none 0/10	none 0/10
Agenticness — how well agents can access and operate the productDownload a machine-readable API spec (OpenAPI or equivalent)	ai-native	none 0/10	none 0/10	n/a	fullT 9/10	none 0/10	fullT 9/10	none 0/10	none 0/10	none 0/10
Agenticness — how well agents can access and operate the productTest against a sandbox environment without touching production data	ai-native	partialC 4/10	none 0/10	n/a	none 0/10	n/a	none 0/10	n/a	none 0/10	n/a
Agenticness — how well agents can access and operate the productRely on versioned APIs with a documented deprecation policy	ai-native	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	n/a	none 0/10	none 0/10

Agents tasks — stories about agents tasks in this arenaAgents tasks

Agent mode

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Agents tasks — stories about agents tasks in this arenaDelegate a multi-step task that the assistant works on autonomously in the background and returns for my review	power-user	fullC 8/10	fullC 8/10	partialC 6/10	disputedD 5/10	partialC 5/10	partialX 6/10	disputedD 6/10	partialT 5/10	partialX 7/10
Agents tasks — stories about agents tasks in this arenaHave the assistant operate a web browser on my behalf to research and complete tasks on websites	power-user	fullC 8/10	fullC 8/10	partialC 4/10	disputedD 5/10	partialC 6/10	none 0/10	none 0/10	none 0/10	none 0/10
Agents tasks — stories about agents tasks in this arenaLet the assistant see and operate applications on my computer to complete work	power-user	fullC 9/10	fullC 8/10	partialC 5/10	disputedD 4/10	partialX 6/10	none 0/10	partialC 4/10	none 0/10	partialX 5/10

Tasks

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Agents tasks — stories about agents tasks in this arenaSchedule recurring or one-off tasks that run automatically and come back to me with results	power-user	fullC 8/10	fullC 8/10	partialC 6/10	none 0/10	none 0/10	none 0/10	partialX 5/10	none 0/10	partialX 6/10

Apps devices — stories about apps devices in this arenaApps devices

Apps

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Apps devices — stories about apps devices in this arenaUse an official desktop app with OS-level shortcuts and access to what is on my screen	power-user	partialC 6/10	partialC 5/10	partialC 5/10	none 0/10	none 0/10	none 0/10	none 0/10	n/a	none 0/10
Apps devices — stories about apps devices in this arenaUse full-featured official mobile apps for iOS and Android	knowledge-worker	fullC 7/10	fullC 8/10	partialC 6/10	fullC 8/10	partialC 6/10	partialC 4/10	partialC 4/10	none 0/10	none 0/10

Custom bots

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Apps devices — stories about apps devices in this arenaBuild and share custom assistants with their own instructions and knowledge	power-user	partialC 5/10	partialC 6/10	partialC 6/10	none 0/10	none 0/10	none 0/10	none 0/10	partialC 5/10	none 0/10

Automation depth — how much of the product can run unattendedAutomation depth

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Automation depth — how much of the product can run unattendedPerform bulk operations across many items at once	ai-native	partialC 6/10	none 0/10	partialX 3/10	none 0/10	partialX 3/10	partialC 4/10	none 0/10	none 0/10	partialC 4/10
Automation depth — how much of the product can run unattendedDefine rules that trigger actions automatically on events	ai-native	fullC 7/10	partialC 4/10	partialC 4/10	none 0/10	none 0/10	none 0/10	none 0/10	partialC 5/10	partialC 6/10
Automation depth — how much of the product can run unattendedSchedule recurring jobs or workflows	ai-native	fullC 8/10	fullC 8/10	partialC 6/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	partialC 6/10
Automation depth — how much of the product can run unattendedVersion, review, and roll back my automations	ai-native	partialC 4/10	none 0/10	none 0/10	partialC 3/10	none 0/10	none 0/10	partialC 4/10	none 0/10	none 0/10

Connectors apps — stories about connectors apps in this arenaConnectors apps

Connectors

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Connectors apps — stories about connectors apps in this arenaBrowse a directory of third-party apps and connectors and add them to the assistant	power-user	fullC 7/10	fullC 9/10	partialC 6/10	partialC 4/10	partialC 4/10	partialC 6/10	partialC 3/10	fullC 7/10	none 0/10
Connectors apps — stories about connectors apps in this arenaConnect my cloud drive, email, and calendar so the assistant can search and use them in answers	knowledge-worker	partialC 6/10	fullC 9/10	fullC 8/10	partialX 5/10	fullX 8/10	fullC 8/10	partialC 6/10	partialC 3/10	partialC 5/10

Files analysis — stories about files analysis in this arenaFiles analysis

Analysis

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Files analysis — stories about files analysis in this arenaHave the assistant write and run code on my data to produce charts, computed answers, and downloadable files	power-user	fullX 8/10	fullC 8/10	none 0/10	disputedD 4/10	partialC 6/10	none 0/10	partialX 4/10	partialC 4/10	n/a

Artifacts

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Files analysis — stories about files analysis in this arenaHave the assistant create and iteratively edit documents, presentations, and other files I can export	knowledge-worker	fullC 9/10	fullC 9/10	partialC 4/10	partialC 3/10	disputedD 4/10	none 0/10	none 0/10	none 0/10	n/a

Files

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Files analysis — stories about files analysis in this arenaUpload documents, spreadsheets, and PDFs and get accurate analysis of their contents	knowledge-worker	fullC 7/10	fullC 9/10	fullX 8/10	none 0/10	partialX 6/10	partialC 5/10	none 0/10	partialC 3/10	none 0/10

Memory context — stories about memory context in this arenaMemory context

Memory

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Memory context — stories about memory context in this arenaHave the assistant remember relevant context from previous chats and apply it in new conversations	power-user	fullC 8/10	fullC 8/10	fullC 8/10	none 0/10	partialC 6/10	none 0/10	partialC 5/10	partialC 5/10	partialC 4/10
Memory context — stories about memory context in this arenaSet persistent custom instructions and preferences that shape every response	power-user	fullC 8/10	partialC 6/10	partialC 5/10	partialC 3/10	partialC 5/10	none 0/10	none 0/10	partialC 3/10	none 0/10

Projects

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Memory context — stories about memory context in this arenaOrganize related chats and files into a project or space that shares context and instructions	knowledge-worker	fullC 8/10	fullC 8/10	fullX 7/10	none 0/10	none 0/10	none 0/10	partialC 4/10	none 0/10	n/a

Multimodal — stories about multimodal in this arenaMultimodal

Images

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Multimodal — stories about multimodal in this arenaGenerate and edit images from natural-language prompts	knowledge-worker	fullC 9/10	partialC 4/10	fullC 8/10	none 0/10	none 0/10	fullC 9/10	none 0/10	none 0/10	n/a
Multimodal — stories about multimodal in this arenaShare screenshots and photos and have the assistant accurately interpret what is in them	knowledge-worker	fullC 7/10	fullC 7/10	disputedD 4/10	none 0/10	partialC 5/10	fullC 7/10	none 0/10	partialC 5/10	none 0/10

Voice

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Multimodal — stories about multimodal in this arenaHave a natural, real-time voice conversation with the assistant	knowledge-worker	fullC 8/10	fullC 8/10	fullC 8/10	partialC 4/10	fullC 6/10	fullX 6/10	none 0/10	none 0/10	partialC 6/10

Openness — open source, data portability, and self-hosting storiesOpenness

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Openness — open source, data portability, and self-hosting storiesDo everything through the API that I can do in the UI	ai-native	partialT 3/10	none 0/10	none 0/10	partialC 5/10	none 0/10	partialT 5/10	none 0/10	partialT 4/10	none 0/10
Openness — open source, data portability, and self-hosting storiesExport all of my data in open formats and leave	ai-native	none 0/10	partialC 6/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10
Openness — open source, data portability, and self-hosting storiesRead the product's source under an open license	ai-native	n/a	none 0/10	n/a	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10
Openness — open source, data portability, and self-hosting storiesSelf-host the core product	ai-native	n/a	n/a	n/a	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10

Privacy posture — data-handling and privacy storiesPrivacy posture

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Privacy posture — data-handling and privacy storiesChoose where my data is stored (region/residency)	ai-native	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10
Privacy posture — data-handling and privacy storiesPrevent my data from being used to train AI models	ai-native	none 0/10	fullC 8/10	partialC 7/10	none 0/10	partialX 6/10	none 0/10	none 0/10	none 0/10	none 0/10
Privacy posture — data-handling and privacy storiesControl data retention and deletion	ai-native	partialC 3/10	fullC 8/10	fullC 8/10	none 0/10	partialX 6/10	none 0/10	partialC 6/10	none 0/10	none 0/10
Privacy posture — data-handling and privacy storiesOpt out of telemetry and usage tracking	ai-native	none 0/10	partialC 6/10	partialC 6/10	none 0/10	disputedD 5/10	none 0/10	none 0/10	none 0/10	none 0/10

Research answers — stories about research answers in this arenaResearch answers

Research

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Research answers — stories about research answers in this arenaLaunch a deep research run that autonomously searches many sources and returns a cited report	knowledge-worker	partialC 6/10	fullX 8/10	fullC 7/10	disputedD 5/10	partialC 5/10	partialC 6/10	none 0/10	none 0/10	none 0/10
Research answers — stories about research answers in this arenaGet answers grounded in current web results with citations back to the sources	knowledge-worker	fullX 8/10	partialX 7/10	partialC 6/10	disputedD 5/10	fullC 8/10	partialX 4/10	none 0/10	none 0/10	partialC 4/10

Trust controls — stories about trust controls in this arenaTrust controls

Admin

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Trust controls — stories about trust controls in this arenaManage members, permissions, and data policies for my organization's workspace	team-admin	partialC 4/10	partialC 4/10	none 0/10	none 0/10	none 0/10	partialC 6/10	n/a	n/a	none 0/10

Data controls

Story	Persona	ChatGPT	Claude	Gemini	Perplexity	Microsoft Copilot	Grok	Muse	Poke	Martin
Trust controls — stories about trust controls in this arenaExport my complete chat history and account data	knowledge-worker	none 0/10	fullC 9/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10	none 0/10
Trust controls — stories about trust controls in this arenaControl whether my conversations are used to train models	knowledge-worker	none 0/10	fullC 8/10	fullC 8/10	none 0/10	partialX 6/10	none 0/10	none 0/10	none 0/10	none 0/10

Verdict✓ fullclear evidence~ partialwith caveats! disputedevidence conflicts— noneno evidence foundn/aquestion doesn't apply to this kind of product

ProofT probedtested by usX communityusers back itC claimedvendor claim onlyD contradictedevidence disagrees⚿ auth-gatedprobe hit a live sign-in wall — verified reachable, untestable keylessly

quality 0–10 · PA Score /100 · A–D = evidence confidence · full guide

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💡AI Assistants arenaAI Assistants

Leaderboard — every product ranked by evidenceLeaderboard

Best by user type — persona-weighted winnersBest by user type

Story matrix — every product × every judged storyStory matrix

🤖Agenticness — how well agents can access and operate the productAgenticness

🤖Agents tasks — stories about agents tasks in this arenaAgents tasks

🔌Apps devices — stories about apps devices in this arenaApps devices

⚙️Automation depth — how much of the product can run unattendedAutomation depth

🔌Connectors apps — stories about connectors apps in this arenaConnectors apps

🔎Files analysis — stories about files analysis in this arenaFiles analysis

🧠Memory context — stories about memory context in this arenaMemory context

✨Multimodal — stories about multimodal in this arenaMultimodal

🔓Openness — open source, data portability, and self-hosting storiesOpenness

🔒Privacy posture — data-handling and privacy storiesPrivacy posture

🔎Research answers — stories about research answers in this arenaResearch answers

⚖️Trust controls — stories about trust controls in this arenaTrust controls