---
id: "qwen/qwen3.5-27b"
also: ["qwen/qwen3.5-27b-20260224", "Qwen/Qwen3.5-27B", "hf/Qwen/Qwen3.5-27B", "requesty/alibaba/qwen3.5-27b"]
cheapest_list_usd_per_m: "0.195 in, 1.56 out, at alibaba on openrouter"
cheapest_effective_usd_per_m: "0.0902 in, 2.3975 out, at phala on openrouter"
context: 262144
max_output: 81920
input: ["text", "image", "video"]
output: ["text"]
released: "2026-02-25"
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["frequency_penalty", "include_reasoning", "logit_bias", "logprobs", "max_tokens", "min_p", "presence_penalty", "reasoning", "repetition_penalty", "response_format", "seed", "stop", "structured_outputs", "temperature", "tool_choice", "tools", "top_k", "top_logprobs", "top_p"]
endpoints: 11
gateways: "openrouter (7), hf (3), requesty (1)"
no_training: 8
trains: 0
retains_prompts: 3
---
# Qwen: Qwen3.5-27B

Qwen3.5-27B is Alibaba's largest dense Qwen3.5 model, delivering near-frontier quality across reasoning, coding, and instruction following. It features a 262K token context window (extensible to 1M), thinking/reasoning mode, tool calling, multi-token prediction, and support for 201 languages. Best suited for production deployments and complex enterprise tasks requiring top-tier performance.