Inception Mercury vs Postman
Inception Mercury and Postman are both developer tools tools. Inception Mercury is aimed at developers and enterprise, while Postman is aimed at developers and small businesses. Both have a free plan.
Diffusion LLM API built for very fast, low-latency text generation
API platform for testing, mocking, documenting and sharing APIs
| Pricing | Freemium | Freemium · $9 |
| Starting price | Not published | $9/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Developers, Enterprise | Developers, Small businesses, Enterprise |
| Platforms | web | web, macos, windows, linux |
| Country | — | US · 2014 |
| 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 Postman if
Development teams that want a shared, full-featured workspace for testing, mocking and documenting APIs.
- Industry standard; many API vendors ship ready Postman collections
- Testing, mocking, docs and monitoring in a single tool
- Capable Free plan for solo developers
Look elsewhere if: Developers who want a lightweight Git-native client or just a docs portal (Bruno, Insomnia, ReadMe, Scalar).
Inception Mercury vs Postman 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
Postman
- Free$01 user; collections, mock servers, up to 5 integrations
- Solo$9/moBilled annually; 1 user, 400 AI credits/mo
- Team$19/user/moBilled annually; unlimited users, 400 AI credits/user
- EnterpriseCustomGovernance, 800 pooled AI credits/user, 100 integrations
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
Postman · Key features
- Collections with pre-request scripts, tests and environment variables
- Requests for REST, GraphQL, gRPC, WebSocket and MQTT APIs
- Mock servers that simulate endpoints before the backend exists
- Scheduled monitors for uptime and response checks
- Collection runner and Postman CLI for CI/CD pipelines
- Spec Hub and native Git sync for API definitions
Cons
- Free plan no longer allows team collaboration
- Heavy desktop app and a cloud account needed for most features
- Collections live in a proprietary format, not plain files in your repo
Inception Mercury vs Postman: FAQ
Do Inception Mercury and Postman have a free plan?
Yes, both Inception Mercury and Postman have a free plan; paid plans add more usage and features.
Which is better for small businesses, Inception Mercury or Postman?
Postman lists small businesses as a core audience, while Inception Mercury is aimed more at developers and enterprise.