AI Tool WatchBuild Reusable AI Workflows
Can create reusable assistants, agents, GPTs, gems, skills, or other repeatable AI setups.
Definition
What counts
- building a named reusable assistant
- packaging instructions or tools for repeated use
- creating no-code or low-code agent workflows
What doesn't count
- one-off prompts in a single chat
- temporary settings that do not create a reusable artifact
Product Availability (4 products)
ChatGPT
Custom GPTs + Actions
Custom GPTs let you create specialized AI assistants with custom instructions, knowledge files, and **Actions for external API integrations**. Actions replaced the old plugin system in April 2024. **Anyone can use public GPTs**, but creating your own with Actions requires Plus ($20/mo) or higher.
Access: paid
| Plan | Available | Notes |
|---|---|---|
| Free | ✓ | |
| Go | ✓ | |
| Plus | ✓ | |
| Pro | ✓ | |
| Team | ✓ | |
| Enterprise | ✓ |
Surfaces: Windows macOS iOS Android web API
Verified: 2026-03-15
Claude
Skills
Skills are modular folders of instructions and resources that Claude can load on demand to perform specialized tasks—like creating Office documents or running workflows. **Prebuilt skills are available on all plans including free** (added Feb 2026 with Sonnet 4.6). **Custom skills require Pro and above.**
Access: paid
| Plan | Available | Notes |
|---|---|---|
| Free | ✓ | |
| Pro | ✓ | |
| Max 5x | ✓ | |
| Max 20x | ✓ | |
| Team | ✓ | |
| Enterprise | ✓ |
Surfaces: Windows macOS Linux iOS Android web terminal API
Verified: 2026-04-03
Microsoft Copilot
Agent Builder
Agent Builder lets you create custom AI agents using natural language—no coding required. **Requires M365 Copilot ($30/user/mo)** for full access. As of March 2026, **agents can call other agents as tools** (multi-agent coordination), and new agent surfaces include Outlook, OneDrive, and Teams communities.
Access: paid
| Plan | Available | Notes |
|---|---|---|
| Free | ✗ | |
| Copilot Pro | ✗ | |
| M365 Copilot | ✓ | |
| Copilot Chat (M365 commercial) | ✓ |
Surfaces: Windows macOS web API
Verified: 2026-03-22
Gemini
AI Studio
AI Studio is Google's developer playground for Gemini models—test prompts, get API keys, and prototype before building. **Completely free** with generous rate limits.
Access: free
| Plan | Available | Notes |
|---|---|---|
| Free | ✓ | |
| AI Pro | ✓ |
Surfaces: Windows macOS web API
Verified: 2026-03-08
Gems (Custom Chatbots)
Gems are custom AI experts you create for specific tasks. **Now free for all users**—create premade or custom Gems at no cost. AI Pro gets higher limits and sharing features.
Access: free
| Plan | Available | Notes |
|---|---|---|
| Free | ✓ | |
| AI Pro | ✓ |
Surfaces: Windows macOS iOS Android web API
Verified: 2026-03-08
Also Known As
custom GPTs, AI workflows, custom bots, reusable prompts, AI automation builder