MCP Comparison · 2026
Circleback vs Fellow MCP Server
Comparing Circleback and Fellow as MCP servers? Circleback (chatgpt app) is best when sales-call summarization. Fellow (query meeting notes) is best when querying past fellow meetings from claude. Both run as Model Context Protocol servers and can coexist in the same client. Updated 2026.
Side-by-side specs
Pulled from each MCP's verified fact sheet.
| Circleback | Fellow | |
|---|---|---|
| Primary function | ChatGPT App | Query Meeting Notes |
| Maintainer | Circleback | Fellow |
| Pricing | Free | Freemium |
| Setup complexity | Low · ~< 1 min | Low · ~< 1 min |
| Transport | Streamable HTTP | Streamable HTTP |
| Auth model | OAuth 2.1 | OAuth 2.1 |
| License | Proprietary | Proprietary |
| Language | — | — |
| Latest version | — | — |
| Compatible clients | ChatGPT | Claude, Any MCP-compatible client |
| Last verified | 2026-05-28 | 2026-06-11 |
Which one should you pick?
Decision rubric drawn from each MCP's documented strengths.
Choose Circleback
- Sales-call summarization
- CRM action-item lookup from past meetings
- Cross-meeting topic search ("what did the client say about pricing last quarter?")
Choose Fellow
- Querying past Fellow meetings from Claude
- Surfacing action items across calls
- Cross-meeting decision recall ("when did we agree on X")
Pick something else if…
- Teams not already on Circleback
- Non-Fellow meeting tools
Feature breakdown
Key capabilities each server ships out of the box.
Circleback
- Search and summarize Circleback meeting transcripts from ChatGPT
- Surface assigned action items by person or deal
- OAuth — no API key, billing stays on Circleback's side
- Listed in the official ChatGPT Apps directory
- Available on ChatGPT Free, Go, Plus, and Pro plans
Fellow
- Anthropic-verified — listed in the Claude Connector directory
- One-click install in Claude (no URL config, no developer mode)
- OAuth authentication on the Fellow side
- Admin-gated at the workspace level
- Read access to notes, transcripts, action items, decisions, calendar events
Install snippets
Open the detail page for ready-to-paste config for every major client.
FAQ
Circleback vs Fellow: which MCP server should I use?
Pick Circleback when sales-call summarization. Pick Fellow when querying past fellow meetings from claude. Circleback is built for chatgpt app, while Fellow focuses on query meeting notes.
Can I run both Circleback and Fellow together?
Yes. MCP clients run each server as a separate process and surface every server's tools simultaneously, so you can install both and let your agent decide which to call. Be deliberate with auth scopes when stacking servers.
How fresh is this comparison?
Updated for 2026. Circleback's last verification: 2026-05-28. Fellow's last verification: 2026-06-11. We refresh detail-page facts on every catalog rebuild.
More Circleback comparisons
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