Qwen Image 2.1 PE T2I

SyncDev model directory · Profile updated Oct 8, 2026

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Qwen Image 2.1 PE T2I rewrites short image briefs into detailed prompts for a downstream image model.

Key specifications

Specification score
35.2
Context window
262.14K
License
Qwen Research License Agreement
Parameters
9.41B

The specification score summarizes recorded features and limits. It is not a benchmark result.

Inputs and outputs

Recorded modality support shows what this model can accept and produce. An undocumented modality is shown as unknown rather than assumed to be unsupported.

Accepts

  • Text input

Produces

  • Text output

Capabilities

ReasoningStreamingOpen weights

What is Qwen Image 2.1 PE T2I?

Qwen Image 2.1 PE T2I rewrites short image briefs into detailed prompts for a downstream image model.

Prompt enhancement before generation

This is a prompt-rewriting checkpoint based on a fine-tuned Qwen3.5-VL 9B model. It turns a brief image request in any language into a detailed English prompt and a suggested aspect ratio. The output is text and structured information, not the finished image.

Review the expanded brief

A longer prompt can introduce details that were not part of the original request. Check the subject, style, required text and aspect ratio before sending the rewritten prompt to Qwen Image or another generator.

Output handling

The model card documents a JSON result after a reasoning block. Parse and validate the expected fields instead of forwarding the entire raw response as an image prompt. Keep the original brief, rewritten result and generated image together so changes can be traced during evaluation.

Licence and deployment

The weights use the Qwen Research License Agreement, which differs from permissive terms on some other Qwen models. Follow the model’s processor and template. This prompt enhancer has its own memory footprint and latency in addition to the downstream image model, and no ordinary image-generation token price should be inferred from the checkpoint.

Sources

Model documentation

How to evaluate Qwen Image 2.1 PE T2I

Compare the model on the work you need to complete.

Tasks and inputs

Qwen Image 2.1 PE T2I is listed for Text generation, Prompt Enhancement. It accepts text and produces text. Use the publisher’s input format and preprocessing for your chosen deployment.

Capacity and cost

Documented limits: 262.14K context. Measure a completed task using the prompts, documents and tools your application will use. Include reasoning and retries in the result.

Choosing a deployment

The weights are downloadable under Qwen Research License Agreement. Check runtime support and size the complete model and working context for your expected concurrency.

Frequently asked questions

No. It rewrites the prompt and returns structured text for a downstream image-generation or editing model.

These records share a directory category. Check the source card, output type and deployment requirements before treating a model as a replacement.

Qwen

Qwen Image 2.1 PE I2I

Qwen Image 2.1 PE I2I rewrites image editing instructions with image references into detailed prompts for a downstream image model.

262.14K context