Inception Mercury vs Living Brain
Inception Mercury and Living Brain are both AI assistants tools. Inception Mercury is aimed at developers and enterprise, while Living Brain is aimed at developers and small businesses. Only Inception Mercury has a free plan.
Diffusion LLM API built for very fast, low-latency text generation
Shared memory layer for AI agents via API, SDK, CLI and MCP
| Pricing | Freemium | Paid |
| Starting price | Not published | Not published |
| Free plan | Yes | No |
| Free trial | — | — |
| Built for | Developers, Enterprise | Developers, Small businesses, Enterprise |
| Platforms | web | web |
| Country | — | — |
| Rating | — | — |
Choose Inception Mercury if
Developers building latency-sensitive agents, voice bots or coding tools who want a fast, cheap text model behind an OpenAI-compatible API.
- Very high output speed suits real-time and agent loops
- Low list price of $0.20 input and $0.70 output per million tokens
- 100 million free tokens with no card to start
Look elsewhere if: Teams that need multimodal models, open weights or the widest ecosystem of hosted tools (Gemini, DeepSeek, Claude).
Choose Living Brain if
Developers and AI-heavy teams who use several models and agents and want one portable memory layer behind them.
- Model-independent memory that follows you across AI tools
- Pay-as-you-go API with a $5 minimum and no subscription
- Many access routes: API, SDKs, CLI and MCP
Look elsewhere if: Teams that just need a note-taking app or a proven enterprise knowledge platform (Notion, Obsidian, Context Engine).
Inception Mercury vs Living Brain pricing
Inception Mercury
- Free$0100M free tokens for new API keys, all models, no card
- Mercury 3$0.20 in / $0.70 out/1M tokensLaunch price 50% off: $0.10 in, $0.35 out; cached input $0.02
- Mercury Voice$0.40 in / $1.50 out/1M tokensLaunch price 50% off: $0.20 in, $0.75 out; enterprise access via sales
- Mercury Decide$0.04 in/1M tokensLaunch price 50% off: $0.02 in; output tokens free
- EnterpriseCustomCustom rate limits, SLA, volume pricing, dedicated capacity
Living Brain
- API$8 per 1M input tokens$0.50 per 1M output, prepaid from $5, 1 GB, 1 seat
- Workspace$99/mo3 seats, 10 GB; included with ChatChat Pro+, no direct checkout
- BusinessCustomDedicated, customer-cloud or on-prem deployment options
Inception Mercury · Key features
- Mercury 3 diffusion LLM with a 1M-token context window
- Measured 1,068 tokens per second output on NVIDIA GPUs
- Adjustable reasoning effort to trade speed against thoroughness
- Tool calling with parallel and chained calls for agents
- Mercury Voice with under 170 ms time-to-first-token for voice agents
- Mercury Decide classification model with calibrated probabilities
Cons
- Quality claims against rivals come without published benchmark scores
- Text-focused lineup with no image or video generation
- Launch discount has no stated end date, so costs may double
Living Brain · Key features
- Captures chats, files, notes and URLs into source-linked pages
- Knowledge graph with automatic connection discovery
- Hosted MCP server for Claude Code, Codex, Cursor, VS Code and more
- Sign-in connection for ChatGPT and Claude without an API key
- REST API, TypeScript and Python SDKs and a CLI
- PDF, Word, PPTX and HTML extraction plus audio transcription
Cons
- Benchmark results are the vendor's own evaluations
- Docs describe the product as early access
- Workspace has no direct checkout and comes with ChatChat Pro+
Inception Mercury vs Living Brain: FAQ
Do Inception Mercury and Living Brain have a free plan?
Inception Mercury has a free plan. Living Brain has no free plan.
Which is better for small businesses, Inception Mercury or Living Brain?
Living Brain lists small businesses as a core audience, while Inception Mercury is aimed more at developers and enterprise.