Factual comparison — May 2026
GPTPowerUps vs ChatGPT Superpower
ChatGPT Superpower has 400,000 claimed users and 55 inventoried features — all on ChatGPT only. Pro plan at $10/month annual. Free tier is capped at 5 folders, plus further limits on profiles and prompt chains. GPTPowerUps covers ChatGPT, Claude, and Grok in one install, with no folder cap and no email required at install.
About ChatGPT Superpower
ChatGPT Superpower is one of the most feature-complete single-host ChatGPT extensions available. Its 55 features cover conversation management, prompt chains, voice mode, image gallery, and an advanced GPT Store. The extension is ChatGPT-only: all features are locked to chatgpt.com. Cross-host capability — comparing ChatGPT answers against Claude, or running one prompt across both simultaneously — is architecturally impossible in a ChatGPT-only extension. Prior versions of the extension auto-subscribed users to a marketing newsletter without explicit opt-in consent, documented in multiple Chrome Web Store 1-star reviews from 2023 to 2025. The current version (v8.1.14, May 2026) does not display a visible opt-out during install.
Feature comparison
| Dimension | GPTPowerUps | ChatGPT Superpower |
|---|---|---|
| Hosts supported | advantageChatGPT, Claude, Grok — 3 hosts, 1 install | ChatGPT only. No Claude. No Grok. |
| Pricing transparency | advantageFree Solo tier. Cloud Sync and Team TBA. Custom on request. | Free (undisclosed limits) or Pro $10/month annual / $15/month monthly. Strikethrough anchor $20 displayed as original price — not a past actual price. |
| Free forever (no expiry) | advantageSolo Free: full core features, no expiry, no credit card | Free tier capped at 5 folders (documented in v8.1.14 upgrade modal, May 2026). Additional limits on custom instruction profiles and prompt chains are undisclosed until you hit them. |
| Email required at install | advantageNo email required to install or use Solo Free | No email required at install on the extension itself. Newsletter subscription behavior in prior versions documented as non-consensual. |
| API key required | Never. Uses logged-in browser session on each host. | tieNever. Uses logged-in ChatGPT session. |
| Local-first storage | advantageAll data stored locally in browser IndexedDB by default. Cloud Sync opt-in only. | Auto Sync stores a local copy of all conversations. Pro Notes sync across devices (server-side). |
| Cross-host project sync | advantageCross-host project folders sync across ChatGPT, Claude, Grok | Not available. ChatGPT-only architecture. |
| Cross-host compare / debate mode | advantageCompare Mode + Debate Mode across ChatGPT, Claude, Grok simultaneously | Not available. ChatGPT-only architecture. |
| Open source | Code is private. Manifest and permissions public on Chrome Web Store. Independent audits available on request. | tieGitHub repo exists (1,674 stars as of May 2026). Not marketed as open source. |
| Customer data collection | advantageZero telemetry by default. Opt-in only. No email harvest. | Local sync by default. Pro images uploaded to servers — only paid users can delete uploaded images (v8.1.10, April 2026). Newsletter auto-subscription documented in past versions. |
| Refund policy | advantageMoney-back guarantee on all paid tiers (window published at paid tier launch). | Cancellation self-service via settings. No published refund policy on marketing site as of May 2026. |
| Browser support | advantageChrome, Edge, Brave, Firefox (full parity) | Chrome, Firefox, Edge, Brave officially listed. Firefox parity gaps and bugs documented in user reviews and Firefox AMO listing. |