AI Research Atlas

Hunyuan-T1 (on TurboS)

Tencent · 21 March 2025

Reasoning model built on TurboS, the first ultra-large hybrid Transformer-Mamba MoE; 96.7% of post-training compute went to RL and MMLU-Pro reached 87.2.

TurboS (560B total, 56B active, 16T tokens, 256K context, adaptive long-short CoT) was disclosed in the May 2025 paper and ranked top 7 on LMSYS Arena with 1356. T1 claims parity with DeepSeek-R1 and decoding speed 2x faster under the same deployment.

Date
Friday, 21 March 2025
Lab
Tencent
Kind
model
Access
closed API

Figures

MeasureValueMeasured by
MMLU-Pro87.2
second to o1 per Tencent
company
GPQA-Diamond69.3company
MATH-50096.2company
Share of post-training compute spent on RL96.7%company

Official-version date 2025-03-21 is from memory of the launch and not stated in the README I read (it says TurboS came 'at the beginning of March' and a T1-Preview in mid-February). Treat the day as unconfirmed.

Sources

  1. github.com/Tencent/llm.hunyuan.T1
  2. arxiv.org/abs/2505.15431

This record was partly confirmed: some claims could not be checked on 6 October 2026. How we check

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