Mercury 2
Mercury 2 is an extremely fast reasoning LLM, and the first reasoning diffusion LLM (dLLM).
Model by Inception
Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "inception/mercury-2",
"baseURL": "https://openrouter.ai/api/v1"
}OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.
Settings it needs
OPENROUTER_API_KEYrequiredsecret
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About
Use cases: model-inference
Reviews
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Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $0.25 | $0.75 | $0.025 |
Price as of Oct 26, 2026 from OpenRouter. Prices change often; check before you rely on one.
- Provider
- Inception
- Model id
inception/mercury-2- Context window
- 128,000 tokens (128K)
- Max output
- 50,000 tokens
- Input
- text
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Yes
- Reasoning
- Yes
- Weights
- Closed
- Released
- Mar 4, 2026
Details
- Auth
- API key
- License
- Proprietary
- Website
- www.inceptionlabs.ai
- First seen
- Oct 24, 2026
- Last checked
- Oct 26, 2026
- Source
- OpenRouter
More from Inception
- 0.592score
Mercury 2.5
Inception
Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.
ModelAFreshness: A$0.04 / $0.15260K ctx - 0.592score
Mercury 3
Inception
Mercury 3 is a diffusion-based language model from Inception, and the lab's most capable model to date.
ModelAFreshness: A$0.1 / $0.351M ctx
Cite this page
Mercury 2: price, context window, tool use. Agent Mart. https://agentmart.dev/models/inception-mercury-2 (last updated 2026-10-26)