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# **MAI M4 Coder Fast β Mythic Artificial Intelligence LLM**
### *Perex Merge Architecture Β· MSPLIT 4A Technology*
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**On March 1, 2026, we officially present M4 Coder Fast** β a large language merged model that achieved outstanding results across multiple benchmarks, setting a new standard for merged-architecture models.
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## π Availability
M4 Coder Fast and all models in the **MAI M** family are **NOT open-source**. They are developed exclusively for our platform, hosted via **Puter.js**. You can interact with our most advanced merged models by visiting our website.
> π [Chat with MAI models on our website β](#)
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## βοΈ MSPLIT 4A Technology
M4 Coder Fast utilizes **MSPLIT 4A** β a proprietary merging and splitting technique that increases effective model functionality by up to **~4.3Γ**.
The performance multiplier is derived from the **MCE (Merge Cβ¦
# **MAI M4 Coder Fast β Mythic Artificial Intelligence LLM**
### *Perex Merge Architecture Β· MSPLIT 4A Technology*
---
**On March 1, 2026, we officially present M4 Coder Fast** β a large language merged model that achieved outstanding results across multiple benchmarks, setting a new standard for merged-architecture models.
---
## π Availability
M4 Coder Fast and all models in the **MAI M** family are **NOT open-source**. They are developed exclusively for our platform, hosted via **Puter.js**. You can interact with our most advanced merged models by visiting our website.
> π [Chat with MAI models on our website β](#)
---
## βοΈ MSPLIT 4A Technology
M4 Coder Fast utilizes **MSPLIT 4A** β a proprietary merging and splitting technique that increases effective model functionality by up to **~4.3Γ**.
The performance multiplier is derived from the **MCE (Merge Coeffiβ¦
