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  1. Models
  2. Text
  3. Qwen

Qwen3.5 27B Thinking

Qwen3.5 27B with extended reasoning enabled. A native vision-language dense model optimized for fast responses.

  • Reasoning
  • Vision
  • Video Input

Added Feb 24, 2026

Model weights

Pricing

Auto routing · per 1M tokens
Input
$0.20
Output
$1.75
Cache read
$0.02
Compare provider prices

Specifications

Context window
260.1K
Max output
65.5K
Parameters
27B
Avg output (7d)
1.4K tokens
Longer than 83% of models

Benchmarks

Sourced from Vectara.

Hallucination Rate

12.1%

Hallucination Rate: 12.1
Better than 24% of models compared

Factual Consistency

87.9%

Factual Consistency: 87.9
Better than 24% of models compared

Answer Rate

99.8%

Answer Rate: 99.8
Better than 64% of models compared

Avg Summary Length

Average generated summary length

94.4

Last updated 2026-10-22 · Matched as qwen/qwen3.5-27b

Vectara Leaderboard

Providers

Choose or restrict providers with the API. Provider-selection prices include the selection markup. Provider selection guide · Pricing API (JSON, USD per 1K tokens)

Auto
Auto (ZDR)
$0.27$2.16N/AN/AN/A
Auto
Auto (Anonymized)
$0.20$1.75$0.02N/AN/A
Chutes
Chutes
FP8
US
$0.21$1.84$0.0212.7s72 tps
SiliconFlow
SiliconFlow
FP8
SG
$0.263$2.10N/A2.7s15 tps
DeepInfra
DeepInfra
FP8
US
$0.273$2.73N/A2.2s20 tps
AtlasCloud
AtlasCloud
FP8
US
$0.284$2.27$0.2842.1s43 tps
Alibaba
Alibaba
SG
$0.315$2.52N/A1.5s50 tps
Novita
Novita
BF16
US
$0.315$2.52N/A2.9s24 tps
Privacy:ZDR, prompts not retainedNo training on promptsRetention and training unclearBest latency and throughput are highlighted.
Batch API
ProviderInputOutputCached input
Auto
Autoqwen/qwen3.5-27b:thinking
$0.20/M$1.75/M$0.02/M

Batch rows for this model use normal routing and cost the same as standard API requests. Set provider in a row to choose a provider.

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Qwen 3.8 27B DarkIdol

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Qwen 3.8 27B Kimiko

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Qwen 3.8 27B Kiwen

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Qwen 3.8 27B Novelist

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Qwen 3.8 27B Novelist is a creative finetune served by Aoru in NVFP4 with a 262,144-token context window. It supports image understanding, tool calling, and optional reasoning.