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Qwen

Qwen: Qwen3.5 27B

Qwen3.5 27B Overview

Qwen3.5-27B is a multimodal dense hybrid model developed by Alibaba Cloud’s Qwen team and released in February 2026 as a high-precision entry in the Qwen3.5 "Medium" series. Unlike its Mixture-of-Experts (MoE) siblings, the 27B model utilizes a dense architecture combining Gated Delta Networks with a feed-forward structure, activating its full parameter suite for every inference to maximize reliability. This design provides the highest instruction-following and coding accuracy in its class, with a notable IFEval score of 95.0. The model features a native 262K-token context window, extensible to 1M tokens via YaRN (RoPE scaling), and is released under the Apache-2.0 license.

Optimized for agentic workflows, Qwen3.5-27B employs an early-fusion architecture that treats visual and textual data as a unified stream for deep cross-modal reasoning. This unified approach allows the model to excel in technical analysis and software engineering, matching GPT-5-mini with a 72.4% score on SWE-bench Verified. While the larger MoE variants in the family lead in raw knowledge benchmarks, the 27B model offers a stable and high-density alternative for structured data extraction and spatial perception, contributing to the Qwen3.5 family’s generational leap in OCR accuracy over the previous Qwen3-VL series.

Qwen3.5 27B Interactive Demo

Qwen3.5 27B Details & Performance

Details

Resources

Vision Tasks

Vision LanguageObject DetectionOCRVisual Question AnsweringCaptioning

Features

LLMs with Vision CapabilitiesMultimodal Vision

Usage

Past 30 Days

Performance

Avg. Latency

Arena Rankings

Qwen3.5 27B Vision Evals

Qwen3.5 27B has not yet been evaluated on the current benchmark. The results below are from the legacy version of Vision Evals, our previous benchmark. See the current Vision Evals

Visual Understanding

77 models · 67 tasks
HighestLowest
This model#16 of 7771.64% pass rate · better than 77%
Score71.64%pass rate across 67 tasks
Speed1.98savg response per task
Cost$0.0003 / task$0.260 in · $2.60 out / 1M
Tokens1.2K / task1.2K in · 7 out
Score key:≥75%40–74%<40%
CategoryPassedScore
Defect Detection12 / 15
80%
Object Understanding11 / 14
78.6%
Document Understanding7 / 9
77.8%
Spatial Understanding14 / 19
73.7%
Object Counting4 / 10
40%
HighestLowest
This model#11 of 5885.59% pass rate · better than 79%
Score85.59%pass rate across 229 tasks
Speed8.51savg response per task
Cost$0.0003 / task$0.260 in · $2.60 out / 1M
Tokens273 / task126 in · 107 out
Score key:≥75%40–74%<40%
CategoryPassedScore
Handwritten Math10 / 10
100%
License Plate Recognition28 / 30
93.3%
Focused Scene OCR84 / 99
84.8%
VQA & Extraction50 / 60
83.3%
Text Recognition24 / 30
80%

Scores based on a single evaluation run · Methodology

View all legacy Vision Evals results →

Qwen3.5 27B Pricing

Qwen3.5 27B costs $0.260 per 1M input tokens and $2.60 per 1M output tokens.

Input$0.260 / 1M tokens
Output$2.60 / 1M tokens

Pricing updated Jul 21, 2026

Price vs. performance

Estimated cost per task vs. Visual Understanding score, for this model and others ranked near it. Upper-left is the sweet spot (high quality, low cost). Based on Vision Evals (legacy) results.

11 of 11 models plotted

ModelScoreMedian tokensEst. cost / taskCompare
OpenAIGPT-5.6 Terra76.1%1.5K$0.0041Compare
OpenAIGPT-5.6 Sol76.1%1.5K$0.0073Compare
GoogleGemini 3.1 Pro75.8%1.1K$0.0024Compare
GoogleGemini 3 Flash74.6%1.4K$0.0014Compare
OpenAIGPT-5 Mini73.1%1.8K$0.0006Compare
QwenQwen3.5 27B(this model)71.6%1.2K$0.0003
AnthropicClaude Sonnet 570.2%2.2K$0.0048Compare
AnthropicClaude Sonnet 4.670.2%2.3K$0.0080Compare
OpenAIGPT-5.6 Luna70.2%1.5K$0.0017Compare
GoogleGemini 2.5 Pro70.2%856$0.0060Compare
GoogleGemini 3.1 Flash-Lite68.7%1.1K$0.0003Compare

Alternatives to Qwen3.5 27B

Other models worth comparing for similar use cases.

Qwen
Qwen3.6 27B
Qwen3.6-27B is a dense 27-billion-parameter multimodal language model developed by Alibaba's Qwen team and released on April 22, 2026. It combines a causal language model with an integrated vision encoder, supporting text, image, and video inputs natively. The architecture employs a hybrid attention design that interleaves Gated DeltaNet linear attention blocks with standard Gated Attention layers across 64 transformer layers with a hidden dimension of 5,120. Unlike Mixture-of-Experts variants in the Qwen3.6 family, all 27 billion parameters are active on every inference pass, simplifying deployment and quantization. The model supports a native context window of 262,144 tokens, extensible to approximately 1,010,000 tokens via YaRN scaling. It is released under the Apache 2.0 license with open weights available on Hugging Face and ModelScope.The model introduces two notable capabilities relative to prior Qwen releases: enhanced agentic coding support covering frontend workflows and repository-level reasoning, and a Thinking Preservation mechanism that retains chain-of-thought reasoning context across multi-turn conversation history to reduce redundant token generation in iterative agent sessions. It supports both a thinking mode for multi-step reasoning and a non-thinking mode for faster responses within a single model. On coding benchmarks, Qwen reports scores of 77.2 on SWE-bench Verified, 59.3 on Terminal-Bench 2.0, and 48.2 on SkillsBench. Vision capabilities include chart understanding (CharXiv RQ: 78.4), OCR (CC-OCR: 81.2), and video understanding (VideoMME with subtitles: 87.7).
Qwen
Qwen3.6 35B A3B
Qwen3.6-35B-A3B is a sparse Mixture-of-Experts (MoE) multimodal language model developed by the Qwen team at Alibaba Group. It carries 35 billion total parameters but activates only approximately 3 billion per forward pass via a learned routing mechanism, giving it the representational capacity of a large dense model at a fraction of the inference compute. The model is natively multimodal, processing images, documents, and video alongside text as a core architectural capability rather than an add-on. It supports a native context window of 262,144 tokens, extensible up to 1,010,000 tokens via YaRN. A key design feature is the unified thinking/non-thinking mode framework: users can switch between deliberate chain-of-thought reasoning and fast direct responses within a single model, and a "thinking preservation" option retains reasoning context across multi-turn agentic workflows to reduce redundant computation.The model is specifically optimized for agentic coding tasks, including repository-level reasoning, frontend workflow generation, multi-step tool use, and MCP (Model Context Protocol) integration. On SWE-bench Verified it scores 73.4%, on Terminal-Bench 2.0 it scores 51.5%, and on MCPMark it scores 37.0%. For vision-language tasks it achieves 92.0 on RefCOCO, 89.9 on OmniDocBench 1.5, and 83.7 on VideoMMMU. The model also supports Multi-Token Prediction (MTP) for speculative decoding. All Qwen3.6 open-weight models are released under the Apache 2.0 license.
Google
Gemma 4 26B A4B
Gemma 4 26B A4B is the Mixture-of-Experts variant in Google's Gemma 4 family, with 25.2B total parameters but only 3.8B active per token. Built from the same Gemini 3 research as the 31B dense sibling and released as open weights under the Apache 2.0 license, it supports a 256K token context window with text and image input and configurable thinking mode. The "A4B" in the name refers to its approximately 4B active parameters. The MoE design makes it significantly faster at inference than the dense 31B, running nearly as fast as a 4B-parameter model while delivering roughly 97% of the dense model's quality.For vision tasks, the 26B A4B shares the same multimodal capabilities as the 31B image understanding with variable aspect ratios and resolutions, and structured bounding box output for UI element detection. The tradeoff versus the 31B dense model is a small quality reduction in exchange for much faster inference and lower hardware requirements, fitting in 18GB of VRAM at 4-bit quantization. It ranked #6 among open models on the Arena AI text leaderboard at launch.
Google
Gemini 2.5 Flash
Gemini 2.5 Flash, released on June 17, 2025, is Google DeepMind’s production-ready, efficiency-focused model in the Gemini 2.5 family. It is multimodal, accepting text, images, video, and audio as inputs, with text as the primary output format. The model supports 1 million input tokens and up to 65K output tokens, enabling it to process very large contexts such as books, long video transcripts, or extensive datasets. Its training knowledge extends to January 2025.Designed as a price-performance leader, Gemini 2.5 Flash balances speed and reasoning power, making it suitable for everyday enterprise and developer use cases without the higher latency and cost of Pro models. It supports advanced workflows like function calling, code execution, search grounding, URL context ingestion, and structured outputs. While efficient and scalable, output length is still limited compared to its input capacity, and multimodal outputs (e.g. image or audio generation) remain restricted to specialized or preview variants.

Qwen3.5 27B License

Apache 2.0

License terms and commercial-use guidance for Qwen3.5 27B.

This model is released under the Apache License 2.0, a permissive open-source license that allows commercial use, modification, distribution, and patent use.

Read the full Apache 2.0 license ↗

Yes. Under the terms of the Apache 2.0 license, you can freely use this model for commercial purposes, including in proprietary products. You must retain the copyright notice and disclaimers when redistributing.

License information is provided as a guide and is not legal advice.

Frequently Asked Questions About Qwen3.5 27B Vision

Yes. Qwen3.5 27B accepts image input, and on Roboflow's previous vision benchmark it passed 71.6% of visual understanding tasks (#16 of 77) and scored 85.6% on OCR. You can test it on your own image in the demo above.

Qwen3.5 27B has not yet been evaluated on Roboflow's current Vision Evals. The results on this page are from the previous benchmark.

Yes. The demo on this page runs Qwen3.5 27B in the free Roboflow Playground: upload an image and see results in seconds. A free account unlocks unlimited runs.