What are the hardware requirements for OpenThinker3 1.5B Checkpoint 375?

OpenThinker3 1.5B Checkpoint 375 requires a context window of 32K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed OpenThinker3 1.5B Checkpoint 375 and how large is it?

OpenThinker3 1.5B Checkpoint 375 is developed by cjiao, a model with 1.5b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

Where can I download or evaluate OpenThinker3 1.5B Checkpoint 375?

OpenThinker3 1.5B Checkpoint 375 is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

OpenThinker3 1.5B Checkpoint 375 by cjiao — 32K context

Name: OpenThinker3 1.5B Checkpoint 375
Author: cjiao

OpenThinker3 1.5B Checkpoint 375 is an open-source language model by cjiao. Features: 1.5b LLM, Context: 32K, Instruction-Based, LLM Explorer Score: 0.24.

Instruct Qwen2 Region:us Safetensors

Model Card on HF 🤗: https://huggingface.co/cjiao/OpenThinker3-1.5B-checkpoint-375

OpenThinker3 1.5B Checkpoint 375 Parameters and Internals

LLM Name	OpenThinker3 1.5B Checkpoint 375
Repository 🤗	https://huggingface.co/cjiao/OpenThinker3-1.5B-checkpoint-375
Model Size	1.5b
Required VRAM	0 GB
Updated	2026-05-14
Maintainer	cjiao
Model Type	qwen2
Instruction-Based	Yes
Model Files	3.5 GB 0.0 GB 0.0 GB
Model Architecture	Qwen2ForCausalLM
Context Length	32768
Model Max Length	32768
Transformers Version	4.46.1
Tokenizer Class	Qwen2Tokenizer
Padding Token	<\|endoftext\|>
Vocabulary Size	151936
Torch Data Type	bfloat16
Errors	replace

Rank the OpenThinker3 1.5B Checkpoint 375 capabilities

Have you tried this model? Rate its performance — this feedback helps the ML community find the right model for their needs.

Instruction Following and Task Automation
Factuality and Completeness of Knowledge
Censorship and Alignment
Data Analysis and Insight Generation
Text Generation
Text Summarization and Feature Extraction
Code Generation
Multi-Language Support and Translation

Best Alternatives to OpenThinker3 1.5B Checkpoint 375

Best Alternatives	Context / RAM	Downloads	Likes
Qwen2.5 1.5B 1.3M Stretched	1280K / 3.1 GB	9	0
Merge Cord V1	128K / 3.1 GB	155	1
Gte Qwen2 1.5B Instruct	128K / 7.1 GB	842208	237
AceInstruct 1.5B	128K / 3.5 GB	139	22
... Abliterated TIES Qwen2.5 1.5B	128K / 3.5 GB	15	0
Saba1 1.8B	128K / 3.6 GB	6	1
Miniclaus Qw1.5B UNAMGS	128K / 3.5 GB	12	8
Bellatrix 1.5B XElite	128K / 3.5 GB	19	3
GCIRS Reasoning 1.5B R1	128K / 3.5 GB	9	1
...illed Scout 1.5B Instruct Gen1	128K / 3.5 GB	10	0

Note: green Score (e.g. "73.2") means that the model is better than cjiao/OpenThinker3-1.5B-checkpoint-375.