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685•06/23/2026, 10:00•1 min read

Qwythos-9B-Claude-Mythos-5 Released with a Context Window of Up to 1 Million Tokens.

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Qwythos-9B-Claude-Mythos-5 Released with a Context Window of Up to 1 Million Tokens.

AI Daily Digest•Verified Tech Release
Executive TL;DR30s read

The Empero team has unveiled the new reasoning model Qwythos-9B, capable of processing up to 1 million tokens of context.

The Empero team has introduced its reasoning model Qwythos-9B, built on a heavily de-censored version of Qwen3.5-9B. The model has undergone a complete fine-tuning of all parameters and has been additionally trained on over 500 million tokens of data from Claude Mythos and Claude Fable.

For training, synthetic Chain of Thought (CoT) were used, generated based on session logs from Fable-5 and Mythos-5.

The model is already available on Hugging Face: Qwythos-9B-Claude-Mythos-5-1M

Why it matters

Analysis

This model opens up new possibilities for processing large volumes of data, which can significantly enhance the efficiency of AI applications across various fields.

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