Move your team from Claude to ChatGPT.
Each person gets a short interview, then a personalized step-by-step guide showing exactly where their saved work, prompts, and projects land in ChatGPT — and the few things that need a manual step, walked through. You send one invite; nobody becomes the help desk, and nothing in Claude is changed or cancelled. Want to see where you’re paying for both first? Run the free audit.
Both products use Projects as named workspaces. Recreate each ChatGPT Project in Claude: create a new Project, copy over the project instructions, and upload reference files to the Project knowledge base. Conversations within a Claude Project inherit instructions and can reference knowledge files, mirroring ChatGPT Project behavior. The reverse migration follows the same steps in the opposite direction.
- Warning: Projects are available on the Free plan in BOTH products: ChatGPT Projects are included on Free, and Claude Projects are available to all users including Free (free Claude accounts can create up to five projects). Paid Claude plans add enhanced project knowledge/RAG capabilities.
- Warning: Claude gives each project its own separate memory space and dedicated project summary, kept separate from non-project chats; in ChatGPT, project-only memory is available only on Business and Enterprise (when workspace Memory is enabled), so individual Free/Plus/Pro plans won't have ChatGPT's project-scoped memory.
- Warning: Shared/collaborative Projects on Claude require a Team or Enterprise plan; ChatGPT project sharing is available more broadly, including for Free, Plus, Pro, and Go users.
Both products offer persistent memory across conversations. Enable Claude's memory via Settings → Capabilities. Export or review ChatGPT memories from Settings → Personalization → Manage Memory, then manually recreate critical memories in Claude by mentioning them in early conversations or explicitly asking Claude to remember key facts. Both products allow viewing, editing, and deleting individual memories.
- Warning: No automated memory import between ChatGPT and Claude — memories must be manually recreated by sharing key facts in conversations.
- Warning: Claude has two memory levels: account-wide memory synthesized across non-project chats, plus a separate per-project memory space and summary for each project. In ChatGPT, project-only (project-scoped) memory is limited to Business and Enterprise workspaces; otherwise ChatGPT memory spans your chats account-wide.
- Warning: Custom GPTs are stateless: they do not use ChatGPT saved memory, custom instructions, or previous conversations — each GPT conversation starts fresh. Claude memory applies across regular conversations and projects.
Recreate Custom GPTs as Claude Skills. For each GPT: create a Skill folder with a SKILL.md containing the GPT's instructions, add knowledge files as resources, and install the Skill. Claude auto-discovers and loads relevant Skills based on the task context. For simpler GPTs that are primarily instructions + knowledge, a Claude Project with custom instructions and uploaded knowledge files is an alternative approach requiring no development setup.
- Warning: GPT custom Actions (API integrations) have no direct Skill equivalent — these require building a separate MCP server or tool integration.
- Warning: GPTs are shareable via link and discoverable in the GPT Store; Claude Skills use the anthropics/skills marketplace or direct installation, a different discovery model.
- Warning: Skills auto-invoke based on task context; GPTs are explicitly selected by the user before starting a conversation.
- Warning: Claude Skills are available on all plans including Free (Pro, Max, Team, Enterprise too); creating/editing custom GPTs requires a paid ChatGPT plan (Go, Plus, Pro, Business, or Enterprise), though anyone including Free users can use existing GPTs.
ChatGPT's two custom-instruction fields map to two Claude mechanisms: put 'what to know about you' content into Claude's account-wide profile preferences (surfaced as 'Instructions for Claude') and put 'how to respond' content into Claude's response-style customization. NOTE: as of 2026 Claude surfaces the facts half as 'Instructions for Claude' and is migrating the standalone Custom Styles feature into Skills (custom styles migrate to skills automatically and are disabled by default; the default Concise/Explanatory/Formal styles go away and Learning is preserved as a skill), so the style half is now best captured as a Claude Skill. Claude applies profile instructions globally to all conversations, mirroring ChatGPT's global custom instructions.
- Warning: Claude splits ChatGPT's single feature into account-wide profile instructions ('Instructions for Claude', facts) + a separate style mechanism (tone/format, now moving to Skills); users must set up both to fully replicate the experience.
- Warning: Very long or complex custom instructions are better captured as Project-level instructions in Claude (paid plans only) rather than global profile instructions.
- Warning: ChatGPT custom instructions have a 1,500-character limit per field; Claude's profile instructions and Style/Skill descriptions have their own separate limits.
The 'How would you like ChatGPT to respond?' field in ChatGPT custom instructions maps to Claude's response-style customization. IMPORTANT: as of 2026 Claude is retiring its standalone Custom Styles feature and migrating it into Skills; existing custom styles auto-migrate to Skills (disabled by default until you enable them under Customize → Skills). Going forward, extract tone, format, length, and structure cues from the ChatGPT field and capture them as a Claude Skill, activated in a chat via the /{name}-style slash command (the style name is lowercased, spaces become hyphens, punctuation/emoji/accents are stripped, and '-style' is appended — e.g. 'Concise Pirate' becomes /concise-pirate-style). Moving from Claude to ChatGPT: distill the Skill's instructions into ChatGPT's 'How would you like ChatGPT to respond?' field (1,500-character limit).
- Warning: ChatGPT combines factual context ('What to know about you') and response style ('How to respond') in one feature; Claude separates these into account-wide profile instructions ('Instructions for Claude', the facts/preferences half) and a separate style mechanism (tone/format). This pattern covers only the style half — see pattern:chatgpt__claude/persistent-user-preferences for the facts half.
- Warning: Claude's standalone Custom Styles are being retired and folded into Skills in 2026 (default styles Concise/Explanatory/Formal go away; Learning is preserved as a Skill). Migrated styles arrive disabled by default and must be enabled under Customize → Skills, then are invoked per-chat via a /{name}-style slash command rather than a Styles picker. ChatGPT custom instructions are global with only an on/off toggle per chat.
- Warning: ChatGPT's 'How to respond' field has a 1,500-character limit; a Claude Style/Skill has its own separate limit. Long or detailed style instructions may need trimming when migrating in either direction.