Pick two. The table shows their rating, their Openness score and the facts behind it, each from the vendor's own pages.
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Grab a 15-minute chat. Sometimes the answer is to build the missing piece next to what you run.
Mantle Chat gives your team a single Slack-style workspace where you can chat with Claude, GPT, Gemini, Grok, and DeepSeek side by side. You create shared AI channels so every teammate sees and builds on the same context, build reusable AI agents once and share them across the team, and connect 30+ integrations including Linear, Slack, and Google Drive. It's free to start with Google login.
Multi-model AI access (Claude, GPT, Gemini, Grok, DeepSeek) in every conversation. AI auto-sorts conversations into folders. Semantic search across AI conversations. Shared AI agents the whole team can reuse. AI writing tools and usage analytics built in.
Mantle Chat is for small teams that already use multiple AI tools separately and want to stop losing context across individual chat histories. If your team has a Claude account, a GPT account, and zero shared memory of what AI helped you figure out last week, Mantle solves that. The main unknown is pricing — the site doesn't publish it, so it takes a conversation to find out what you'd actually pay.