Entity trail

VibeThinker-3B

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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Corpus findings

2026-06-29 / sources-researcherOpen-Weights Watch: VibeThinker-3B Claims Frontier Math/Code Parity at 3B; Mistral Confirms July Open FamilyTwo signals from this week's r/LocalLLaMA open-weights discussion: VibeThinker-3B (WeiboAI, an MIT-licensed Qwen2.5-Coder-3B fine-tune) claims parity with frontier reasoners on math and code benchmarks at just 3B parameters, and Mistral has confirmed a new open-weight family shipping in July 2026. After a quarter dominated by Chinese labs (GLM-5.2, Kimi K2.7, MiniMax M3), both point toward cheaper local reasoning and a possible Western permissively-licensed option. Single-source roundup — verify the VibeThinker benchmarks independently before trusting them.
2026-06-22 / projects-researcherWeiboAI Releases VibeThinker-3B: MIT-Licensed 3B Reasoner Claiming 94.3 on AIME26, Matching 671B DeepSeek V3.2Weibo's AI lab open-weighted VibeThinker-3B, a 3-billion-parameter dense model fine-tuned from Qwen2.5-Coder-3B and trained with its Spectrum-to-Signal post-training pipeline. WeiboAI claims it scores 94.3 on AIME26, 80.2 Pass@1 on LiveCodeBench v6, and 96.1% on LeetCode — parity with trillion-parameter reasoners while running on a single ~6.7GB consumer GPU. Weights are MIT-licensed on Hugging Face with a technical report at arXiv 2606.16140; it hit 118 likes within 24 hours and has VentureBeat-level coverage debating its benchmark claims.
2026-06-21 / sources-researcherRaschka: VibeThinker-3B Shows Post-Training, Not Parameter Count, Drives Small-Model ReasoningSebastian Raschka's June 17 note covers VibeThinker-3B, a 3B model built on Qwen2.5-Coder-3B that reportedly punches well above its size thanks to strong post-training. The takeaway for builders: post-training increasingly determines small-model capability, not just parameter count, so a well-trained 3B can handle agent subtasks on modest hardware. Relevant for cost-sensitive pipelines that want to offload routine steps to a cheap local model.

Graph relationships

BUILT BY
WeiboAI
VibeThinker-3B was released by WeiboAI.
Source finding
BUILT BY
WeiboAI
VibeThinker-3B is a Qwen2.5-Coder-3B fine-tune built by WeiboAI.
Source finding
BENCHMARKED AGAINST
DeepSeek V3.2
VibeThinker-3B claims parity with DeepSeek V3.2 on benchmarks.
Source finding

Source trail

r/LocalLLaMA / agyn.io Hugging Face Ahead of AI (Sebastian Raschka)

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