Notion AI vs Slack AI: pricing, features and which to choose

Notion AI is Notion Labs’ embedded assistant for workspaces combining notes, documents, tasks, and databases. Launched in 2022 and generally available in 2023, it now drafts and edits pages, answers workspace questions, researches topics, transcribes meetings, searches connected apps, generates formulas, autofills databases, and runs scheduled Custom Agents. Auto routes requests among available models, while named options include Opus 5.5, Astra, Fable, Claude Sonnet 4, GPT-5, GPT-4.1, and Claude 3.7 Sonnet, with availability varying by plan. Free costs $0 and Plus $10 per member monthly, both offering limited AI trials; Business is $20 with AI included, while Enterprise is custom priced. Compared with ChatGPT and Claude, Notion offers deeper page context; Otter.ai remains stronger for dedicated transcription. It suits teams already organized in Notion, but users should verify outputs and monitor credit limits.

A typical request starts in a Notion page, database, or chat, where users can ask Notion AI to draft, summarize, rewrite, translate, generate formulas, create databases, or answer workspace questions. Notion Agent extends this workflow by creating and editing pages and databases while using permitted workspace, connected-app, and web context for multi-step tasks. Research Mode builds detailed reports from workspace and web information, while AI Meeting Notes transcribes conversations, summarizes key points, and extracts follow-ups. Enterprise Search combines Notion with Slack, Google Drive, and GitHub, returning answers with citations. Custom Agents automate recurring work through schedules or triggers, and AI blocks insert generated content into ordinary pages. Database Autofill populates properties, making routine classification and enrichment faster without leaving the workspace.

Notion AI is best understood as an AI layer inside a team workspace rather than a purely standalone chatbot. Its value comes from combining page-aware answers, writing assistance, database autofill, meeting transcription, research reports, and agents that can create or edit Notion content while using connected-app and web context. Auto routes tasks among available models, while users may access named options such as Claude Sonnet 4, GPT-5, GPT-4.1, Opus 5.5, and Astra, depending on plan and availability. Free and Plus include limited trials; Business costs $20 per member monthly, and Enterprise is custom priced, with credits, limits, and provider-retention policies requiring attention. ChatGPT and Claude are stronger general assistants, while Otter.ai focuses more narrowly on transcription. Notion AI suits knowledge-centered teams that accept usage controls and fact-checking.

Slack AI is the AI layer inside Slack, made by Slack, which Salesforce acquired on July 21, 2021. Slack launched Slack AI on February 14, 2024, initially with AI search, channel recaps, and thread summaries. It now works across conversations, files, huddles, canvases, and Workflow Builder, adding daily recaps, file summaries, translations, AI writing assistance, workflow generation, and Slackbot. The product uses off-the-shelf models and retrieval rather than one publicly identified foundation model. Slack says customer data is not used to train large language models, and responses respect each user’s existing permissions. Slack’s pricing page lists a free plan with 90 days of history, up to 10 apps, and basic AI, while Pro starts at $8.75 per user monthly, Business+ at $18, and Enterprise+ is custom. Salesforce owns the parent company, not Slack AI as a separate acquisition.

Slack AI works inside the places teams already use: search, channels, threads, huddles, canvases, and Workflow Builder. A typical workflow starts with a natural-language question about messages or shared files, followed by an answer grounded in content the requester can access. Users can summarize a thread or channel, capture huddle transcripts and action items, review daily recaps, summarize files, translate messages, or ask Slackbot about conversations, files, and projects. Slack AI can also generate workflows from a prompt and add AI steps, such as recurring channel summaries. Its app directory lists more than 2,600 integrations, while enterprise search extends queries across connected apps and systems. Slack says outputs remain permission-scoped, so the assistant should not expose content unavailable to the requesting user.

Slack AI’s main limitation is scope: it is strongest inside Slack, where permission-scoped search, summaries, recaps, file summaries, translations, Slackbot, and Workflow Builder draw on conversations and shared files. Microsoft 365 Copilot reaches across Teams and Microsoft 365 apps, while Google Gemini for Workspace is more deeply tied to Gmail, Docs, and Meet. ChatGPT Enterprise is broader as a general assistant, rather than a communication archive with native channels and huddles. Slack says it uses off-the-shelf models, does not train them on customer data, and keeps prompts and outputs from providers, but it does not identify one exclusive foundation model. Its discontinued standalone AI add-on and tier-based feature split also complicate purchasing. Slack AI suits teams already conducting substantial, searchable work in Slack, especially those that value permission-aware retrieval over a general-purpose chatbot.