Appsmith vs Inception Mercury
Appsmith and Inception Mercury are both developer tools tools. Appsmith is aimed at developers, while Inception Mercury is aimed at developers and enterprise. Both have a free plan.
Open-source internal tool builder
Diffusion LLM API built for very fast, low-latency text generation
| Pricing | Open source · $15 | Freemium |
| Starting price | $15/mo | Not published |
| Free plan | Yes | Yes |
| Free trial | 15 days | — |
| Built for | Developers | Developers, Enterprise |
| Platforms | web | web |
| Country | IN · 2019 | — |
| Rating | — | — |
Choose Appsmith if
Teams wanting open-source internal tools.
- Open source and self-hostable
- Lower cost than Retool
- Git integration
Look elsewhere if: Teams prioritizing polish and component breadth (Retool).
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).
Appsmith vs Inception Mercury pricing
Appsmith
- Free$0Up to 5 cloud users, 5 workspaces, 3 Git repos; open-source edition
- Business$15/user/moUp to 99 users, custom roles, audit logs, Git, 15-day trial
- Enterprise$2,500/mo100 users included; SAML/OIDC SSO, SCIM, SLAs
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
Appsmith · Key features
- Widget-based UI builder
- Connectors to databases and APIs
- JavaScript logic everywhere
- Git version control
- Workflows
- Self-hosting
Cons
- Fewer components than Retool
- UI less polished
- Self-hosting maintenance
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
Appsmith vs Inception Mercury: FAQ
Do Appsmith and Inception Mercury have a free plan?
Yes, both Appsmith and Inception Mercury have a free plan; paid plans add more usage and features.