AgentHubKnow when to buy, switch, or wait on your AI tool stack.
Change impact watchlist
Save the tools your team is evaluating, see which tracked changes affect that shortlist, and generate a decision memo you can share without sending internal docs or code.
Impact alerts
Estimated monthly cost: $226
Teams comparing ChatGPT against Claude, Gemini, or specialist coding tools should treat GPT-5.5 as the current capability baseline. ChatGPT Business is more compelling for mixed-role teams because GPT-5.5 Pro access, Codex, connectors, and governance can sit in one workspace seat, while API-heavy buyers must model the higher GPT-5.5 token price separately from subscription seats.
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ChatGPT becomes easier to defend as the broad default when a team wants one OpenAI ladder spanning chat, coding, and API-adjacent work instead of a narrower assistant seat.
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Copilot is still strongest for Microsoft-standardized teams, but monthly pilots are no longer easy to mistake for the cheaper annual line. Buyers now need to model add-on versus bundle paths more explicitly before comparing Microsoft against ChatGPT, Gemini, or Notion AI.
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ChatGPT is easier to justify for price-sensitive individual rollout and for teams that want a softer on-ramp before deciding whether Plus or Business is worth standardizing.
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Mixed-role teams can now justify ChatGPT as one broader workspace purchase instead of buying one chat tool for knowledge work and another coding tool for technical users.
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The OpenAI stack now has a cleaner step-down path below GPT-5.4, which matters for buyers comparing premium ChatGPT access against specialist tools or lower-cost suite bundles.
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This makes Glean more defensible as a governed enterprise context platform even for companies that do not want to standardize on one assistant, because it can feed Claude Code, Cursor, Copilot, ChatGPT, and other MCP hosts from one permission-aware layer.
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This lowers the near-term barrier for Microsoft 365 customers to standardize on Copilot Business, especially against separate AI seats, but teams still need to account for the required qualifying Microsoft 365 base plan underneath the Copilot layer.
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Decision memo
# AI Stack Decision Memo: Team AI shortlist Buyer context: team / coding Team size: 5 Selected tools: Glean, Microsoft 365 Copilot Business, ChatGPT Estimated monthly self-serve cost: $226 Highest impact: urgent ## Impact Alerts - ChatGPT: GPT-5.5 replaces the GPT-5.4 buying story across ChatGPT, Codex, and the API. Re-check this stack before renewal or rollout. - ChatGPT: GPT-5.4 now anchors ChatGPT, Codex, and the API as OpenAI's main flagship layer. Re-check this stack before renewal or rollout. - Microsoft 365 Copilot Business: Microsoft 365 Copilot Business now shows a clearer split between annual, monthly, and discounted bundle paths. Update the decision memo before sharing this stack. - ChatGPT: ChatGPT now exposes a Go tier between Free and Plus. Update the decision memo before sharing this stack. - ChatGPT: ChatGPT Business now packages connectors and Codex inside one workspace seat. Update the decision memo before sharing this stack. - ChatGPT: GPT-5.4 mini and nano widen OpenAI's lower-cost ladder on March 17, 2026. Update the decision memo before sharing this stack. - Glean: Glean expanded its open agent platform with MCP and third-party agent interoperability. Update the decision memo before sharing this stack. - Microsoft 365 Copilot Business: Microsoft discounts Copilot Business bundles and add-on pricing through June 30, 2026. Update the decision memo before sharing this stack. ## Pricing Caveats - Glean: No published seat pricing is available for direct comparison. - At least one selected tool lacks complete self-serve monthly pricing. ## Evidence - [Glean](https://www.glean.com/) - [Microsoft 365 Copilot Business](https://www.microsoft.com/en-us/microsoft-365-copilot/business) - [ChatGPT](https://chatgpt.com) - [chatgpt vs claude](/en/compare/chatgpt-vs-claude) - [chatgpt vs gemini](/en/compare/chatgpt-vs-gemini) - [microsoft-365-copilot-business vs chatgpt](/en/compare/microsoft-365-copilot-business-vs-chatgpt) - [microsoft-365-copilot-business vs gemini](/en/compare/microsoft-365-copilot-business-vs-gemini) - [microsoft-365-copilot-business vs notion-ai](/en/compare/microsoft-365-copilot-business-vs-notion-ai) - [notion-ai vs chatgpt](/en/compare/notion-ai-vs-chatgpt) - [glean vs chatgpt](/en/compare/glean-vs-chatgpt) - [glean vs atlassian-rovo](/en/compare/glean-vs-atlassian-rovo)
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