Mercury 3
Mercury 3 is a diffusion-based language model from Inception, and the lab's most capable model to date.
Model by Inception
Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "inception/mercury-3",
"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 | $0.1 | $0.35 | $0.01 |
Price as of Oct 26, 2026 from OpenRouter. Prices change often; check before you rely on one.
- Provider
- Inception
- Model id
inception/mercury-3- Context window
- 1,000,000 tokens (1M)
- Max output
- 131,072 tokens
- Input
- text
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Yes
- Reasoning
- Yes
- Weights
- Closed
- Released
- Oct 16, 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 2
Inception
Mercury 2 is an extremely fast reasoning LLM, and the first reasoning diffusion LLM (dLLM).
ModelAFreshness: A$0.25 / $0.75128K ctx
Cite this page
Mercury 3: price, context window, tool use. Agent Mart. https://agentmart.dev/models/inception-mercury-3 (last updated 2026-10-26)