# Baidu: what I've logged

> Baidu comes up in 2 posts of my AI log, from September 2025 to November 2026, and each item below links to the primary source. The releases I logged include ERNIE-5.5-Flash-Base and ERNIE-4.5-21B-A3B-Thinking, filed under open weights, agents and coding and image, video, world.

## Items

1. **ERNIE-5.5-Flash-Base** (Baidu, 4 Nov 2026): A sparse mixture-of-experts base checkpoint with 280B total and 14B active parameters, pre-trained on 33.5T tokens, with a 128K training context and 1M for fine-tuning and inference. [Primary source](https://huggingface.co/baidu/ERNIE-5.5-Flash-Base) · [Post](https://heyaliasif.com/ai/2026-11-05-ernie-5-5-flash-phonon-cuda-13-5-luma-mcp#item-1)
2. **ERNIE-4.5-21B-A3B-Thinking** (Baidu, 8 Sept 2025): A small mixture-of-experts reasoning model with tool use and a 128K context, under Apache 2.0. [Primary source](https://huggingface.co/baidu/ERNIE-4.5-21B-A3B-Thinking) · [Post](https://heyaliasif.com/ai/2025-09-08-week-in-ai#item-3)

## Posts

- 2026-11-05 [ERNIE 5.5 Flash Base, Phonon TTS, CUDA 13.5, Luma MCP](https://heyaliasif.com/ai/2026-11-05-ernie-5-5-flash-phonon-cuda-13-5-luma-mcp)
- 2025-09-08 [Claude makes files, Qwen3-Next goes sparse, ERNIE 4.5 Thinking](https://heyaliasif.com/ai/2025-09-08-week-in-ai)

Canonical: https://heyaliasif.com/ai/topics/baidu