Model reference · open weights

Kimi-VL-Thinking-2506

LLMs moonshotai Vision + text · MoE 1 build Open weights 32k dl/mo

Kimi-VL-Thinking-2506 is an open-weight language model from moonshotai. Kimi-VL-A3B-Thinking-2506 (BF16) weighs 32.8 GB; the smallest configuration that runs it is L40S 48 GB.

  • Kimi-VL-Thinking-2506 is a 16.4B parameter image-text-to-text model developed by moonshotai and released under the MIT licence.
  • It is designed for multimodal reasoning, general visual perception, and video understanding, supporting up to 3.2 million total pixels in a single image.
  • The model generates up to 32K tokens and is recommended for inference using VLLM with a maximum model length of 131,072.

Summary of the moonshotai/Kimi-VL-A3B-Thinking-2506 model card, 2026-10-01

What it is

Released bymoonshotai
Released2025-06-21
Parameters16.4B
VRAM32.8 GB for the weights

What it runs on

Memory and cards for Kimi-VL-A3B-Thinking-2506 (BF16)

32.8 GBweights, file size
31 MBcache per 1K tokens
2.5 GBruntime overhead, at least
131,072 tokenscontext max
CardRequests at onceContext maxMemory
8K each32K each
RTX 3060 12 GB … RTX 5090 32 GB
5 smaller cards
———
L40S 48 GB338all 128K44.0 GB
A100 80 GB16842all 128K78.2 GB
H100 80 GB14536all 128K78.1 GB
RTX PRO 6000 Blackwell 96 GB20651all 128K93.8 GB
DGX Spark (GB10) 128 GB unified25964all 128K107 GB
H200 141 GB37994all 128K138 GB
B200 180 GB520130all 128K176 GB
2× RTX 4090 24 GB
tensor parallel
174all 128K23.4 GB a card
2× RTX 3090 24 GB
tensor parallel
174all 128K23.4 GB a card
2× RTX 5090 32 GB
tensor parallel
4711all 128K31.0 GB a card
Memory needed at each load
Requests at once8K tokens each32K tokens each
135.6 GB36.3 GB
536.6 GB40.4 GB
837.4 GB43.5 GB
1639.4 GB51.6 GB
3243.5 GB67.9 GB
6451.6 GB101 GB

One card, with vLLM's small-card settings.

From the model card

What moonshotai says about Kimi-VL-Thinking-2506

Read the model card

[!Note] This is an improved version of Kimi-VL-A3B-Thinking. Please consider using this updated model instead of the previous version.

[!Note] Please visit our tech blog for recommended inference recipe of this model: Kimi-VL-A3B-Thinking-2506: A Quick Navigation

1. Introduction

This is an updated version of Kimi-VL-A3B-Thinking, with following improved abilities:

  • It Thinks Smarter while Consuming Less Tokens: The 2506 version reaches better accuracy on multimodal reasoning benchmarks: 56.9 on MathVision (+20.1), 80.1 on MathVista (+8.4), 46.3 on MMMU-Pro (+3.3), 64.0 on MMMU (+2.1), while in average requires 20% reduced thinking length.
  • It Sees Clearer with Thinking: Unlike the previous version that specializes on thinking tasks, the 2506 version can also achieve the same or even better ability on general visual perception and understanding, e.g. MMBench-EN-v1.1 (84.4), MMStar (70.4), RealWorldQA (70.0), MMVet (78.4), surpassing or matching abilties of our non-thinking model (Kimi-VL-A3B-Instruct).
  • It Extends to Video Scenarios: The new 2506 version also improves on video reasoning and understanding benchmarks. It sets new state-of-the-art for open-source models on VideoMMMU (65.2), while also retains good ability on general video understanding (71.9 on Video-MME, matching Kimi-VL-A3B-Instruct).
  • It Extends to Higher Resolution: The new 2506 version supports 3.2 million total pixels in a single image, 4X compared to the previous version. This leads to non-trivial improvements on high-resolution perception and OS-agent grounding benchmarks: 83.2 on V* Benchmark (without extra tools), 52.8 on ScreenSpot-Pro, 52.5 on OSWorld-G (full set with refusal).

2. Performance

Comparison with efficient models and two previous versions of Kimi-VL (*Results of GPT-4o is for reference here, and shown in italics):

Benchmark (Metric)GPT-4oQwen2.5-VL-7BGemma3-12B-ITKimi-VL-A3B-InstructKimi-VL-A3B-ThinkingKimi-VL-A3B-Thinking-2506
General Multimodal
MMBench-EN-v1.1 (Acc)83.183.274.682.976.084.4
RealWorldQA (Acc)75.468.559.168.164.070.0
OCRBench (Acc)815864702864864869
MMStar (Acc)64.763.056.161.764.270.4
MMVet (Acc)69.167.164.966.769.578.1
Reasoning
MMMU (val, Pass@1)69.158.659.657.061.764.0
MMMU-Pro (Pass@1)51.738.132.136.043.246.3
Math
MATH-Vision (Pass@1)30.425.032.121.736.856.9
MathVista_MINI (Pass@1)63.868.056.168.671.780.1
Video
VideoMMMU (Pass@1)61.247.457.052.155.565.2
MMVU (Pass@1)67.450.157.052.753.057.5
Video-MME (w/ sub.)77.271.662.172.766.071.9
Agent Grounding
ScreenSpot-Pro (Acc)0.829.0—35.4—52.8
ScreenSpot-V2 (Acc)18.184.2—92.8—91.4
OSWorld-G (Acc)-31.5—41.6—52.5
Long Document
MMLongBench-DOC (Acc)42.829.621.335.132.542.1

Comparison with 30B-70B open-source models:

Benchmark (Metric)Kimi-VL-A3B-Thinking-2506Qwen2.5-VL-32BQwen2.5-VL-72BGemma3-27B-IT
General Multimodal

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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