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Qwen 3.8 27B Fable: AI Large Language Models

Call Qwen 3.8 27B Fable through one API. 524K-token context, streaming and pay-per-token pricing. Try free in the Muapi playground. Qwen 3.8 27B Fable is a 27B Qwen 3.8-based community fine-tune tuned for creative writing, character chat and interactive fiction (it is not abliterated) geared toward long-form storytelling, with a 524K-token context window and image input.

Interactive model controls

Qwen 3.8 27B Fable is a 27B Qwen 3.8-based community fine-tune tuned for creative writing, character chat and interactive fiction (it is not abliterated) geared toward long-form storytelling, with a 524K-token context window and image input.

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Overview

About this model

Qwen 3.8 27B Fable is a 27B Qwen 3.8-based community fine-tune tuned for creative writing, character chat and interactive fiction (it is not abliterated) geared toward long-form storytelling, with a 524K-token context window and image input. Muapi exposes it through a single REST endpoint with async polling and Server-Sent Events streaming, so you can drop it into chat apps, agents and workflows without hosting GPUs. It is best suited to long-form story writing. Pricing is pay-per-token at $0.5/M input tokens and $3/M output tokens, with no subscription. See also Qwen 3.8 27B Queen. Browse the full lineup on the Qwen Character Chat API page or the Character Chat LLM API hub and the Abliterated LLM API hub. Mature themes are permitted only within Muapi's acceptable-use policy, and output quality and behavior vary by prompt.

1Character chat: Give Qwen 3.8 27B Fable a persona through `system_prompt` and keep long conversations in character.
2Interactive fiction: Build text adventures and collaborative stories on the [Character Chat LLM API](/character-chat-llm-api) hub.
3Story writing: Draft scenes, dialogue and world-building with a model tuned for creative prose.
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Pricing & Value

Cost analysis

muapiapp$0.5/M input tokens and $3/M output tokens

Pay-per-token, billed on actual usage with a small minimum reserved up front.

Fal.aiNot available

Qwen 3.8 27B Fable is not offered as a hosted endpoint.

ReplicateNot available

Qwen 3.8 27B Fable is not offered as a hosted endpoint.

** Competitor pricing is estimated based on similar model architectures and usage tiers.

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Technical Details

Configuration schema

Promptstring

The user message or instruction for the model.

Default ValueStay in character as a dry-witted ship's navigator and greet the new crew member.
Image URLstring

Optional public image URL for multimodal analysis.

Default Valueundefined
System Promptstring

Optional system-level instruction to guide model behavior. Use it to define the character or setting.

Default ValueYou are Mara, a dry-witted ship's navigator. Stay in character.
Max Tokensinteger

Optional maximum number of tokens to generate.

Default Value8192
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Implementation Guide

Developer documentation

How to Use Qwen 3.8 27B Fable API

  1. Get an API key: Create a key in your Muapi dashboard.

  2. Send a prompt: POST prompt (plus optional system_prompt and max_tokens, up to 32768) to /api/v1/qwen-3-8-27b-fable. Provide an optional public image_url to include an image with your prompt.

curl -X POST https://api.muapi.ai/api/v1/qwen-3-8-27b-fable \
  -H "x-api-key: $MUAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "Stay in character as a dry-witted ship's navigator and greet the new crew member.", "image_url": "https://example.com/photo.jpg"}'
  1. Poll or stream: Poll GET /api/v1/predictions/{request_id}/result until status is completed, or stream tokens live from /api/v1/qwen-3-8-27b-fable/stream.
curl -X POST https://api.muapi.ai/api/v1/qwen-3-8-27b-fable/stream \
  -H "x-api-key: $MUAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "Stay in character as a dry-witted ship's navigator and greet the new crew member.", "image_url": "https://example.com/photo.jpg"}'
  1. Read the result: The generated text is returned in outputs. Usage is billed on actual token counts.
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Common Questions

Frequently asked

What is Qwen 3.8 27B Fable?

Qwen 3.8 27B Fable is a 27B Qwen 3.8-based community fine-tune tuned for creative writing, character chat and interactive fiction (it is not abliterated) geared toward long-form storytelling, with a 524K-token context window and image input.

What is this model tuned for?

Qwen 3.8 27B Fable is a community fine-tune tuned for creative writing, character chat and interactive fiction. It is not an abliterated model.

How is Qwen 3.8 27B Fable priced?

Billing is per token: $0.5/M input tokens and $3/M output tokens. A small minimum is reserved when the request starts and reconciled to actual usage.

Does Qwen 3.8 27B Fable support streaming?

Yes. Stream tokens live from `/api/v1/qwen-3-8-27b-fable/stream` using Server-Sent Events, or poll the async endpoint.

What is the context window?

The context window is about 524K tokens. Prompt and output together must fit inside it; `max_tokens` is capped at 32768. Image input is supported via `image_url`.

Are mature themes allowed?

Only within Muapi's acceptable-use policy. The model is not guaranteed to produce any particular content, and you remain responsible for complying with applicable laws.