Inception Mercury vs OpenLLM
Inception Mercury and OpenLLM are both AI assistants tools. Inception Mercury is aimed at developers and enterprise, while OpenLLM is aimed at developers and freelancers. Both have a free plan.
Diffusion LLM API built for very fast, low-latency text generation
Routes coding agents through your AI plans, API keys and local models
| Pricing | Freemium | Freemium · $30 |
| Starting price | Not published | $30/mo |
| Free plan | Yes | Yes |
| Free trial | — | 3 days |
| Built for | Developers, Enterprise | Developers, Freelancers |
| Platforms | web | macos, linux |
| 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 OpenLLM if
Individual developers who pay for several AI plans and want every coding agent to use them through one endpoint with automatic fallback.
- Free tier is generous at 50M non-cached tokens a month
- Existing config such as ~/.claude is left unmodified
- Keeps agents running through rate limits with fallback chains
Look elsewhere if: Teams that need a self-hosted, governed gateway or pay-per-token access to many models without accounts (LiteLLM, OpenRouter).
Inception Mercury vs OpenLLM 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
OpenLLM
- Free$050M non-cached tokens/mo included, 2 devices, no card
- Pro$30/moUnlimited tokens, 5 devices, hosted gateway; 3-day trial
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
OpenLLM · Key features
- One OpenAI- and Anthropic-compatible endpoint and key for every connected model
- Use Claude, ChatGPT, Kimi Code and Grok subscriptions from other agents
- Fallback model chains when a model is rate-limited or unavailable
- Auto-detection of local Ollama and LM Studio model servers
- Shared MCP memory across Claude Code, Codex, Grok Build and OpenCode
- Browser-side AES-256-GCM key vault with a user-held recovery phrase
Cons
- No Windows support for the local daemon
- Single-user today, with no team features
- Losing the recovery phrase means re-entering every key
Inception Mercury vs OpenLLM: FAQ
Do Inception Mercury and OpenLLM have a free plan?
Yes, both Inception Mercury and OpenLLM have a free plan; paid plans add more usage and features.