Claude Fable 5
⧉Claude Fable 5 是 Anthropic Fable 系列模型，与 Opus 5 同代、同一套能力底座（自适应思考、工具调用、图片理解、提示缓存），在中文叙事与长文写作上笔触更细腻、情绪层次更完整。完全兼容 OpenAI 接口，把 model 改成 claude-fable-5 即可接入；同样支持原生 Anthropic Messages 接口。
Live Test · Playground
Try out Claude Fable 5 right here (available after login)。
Input
Advanced
Conversation
About Claude Fable 5
Claude Fable 5 is a model in Anthropic's Fable series, same generation as Claude Opus 5 and built on the same capability base: adaptive thinking by default, native tool use, image input and prompt caching. It stands out on narrative and long-form writing - character motivation and emotional progression stay coherent and long pieces hold their structure - which suits fiction, scripts, brand copy and in-depth long-form articles. On NezhaGate it is available both through the OpenAI-compatible endpoint (set model to claude-fable-5) and through the native Anthropic Messages API. Billing is pay-as-you-go and failed requests are not charged.
Use cases
Long-form narrative, character arcs and dialogue polish, staying consistent with characters and plot across many revisions.
Industry analysis, columns and reviews that need structure and flow, with more natural logical progression between paragraphs.
Product stories, brand narrative and ad scripts, with a steadier sense of emotional register than general-purpose models.
Expand, rewrite, restyle and translate existing drafts while preserving meaning and adjusting the voice.
It carries the same generation's reasoning and coding ability, so everyday tasks beyond writing work too.
How to choose
Choose Claude Fable 5 when content creation is the main job - narrative, long-form structure and emotional nuance are where it is strongest. If the workload is complex reasoning, large code projects or agent orchestration, its sibling Claude Opus 5 fits better and costs less; for high-frequency, low-cost everyday chat, Claude Sonnet 4.6 is more economical. All three share one endpoint - just change the model field.
FAQ
What is Claude Fable 5?
Fable 5 or Opus 5?
Why is my temperature ignored?
Does it support streaming and prompt caching?
Will long articles get truncated?
Related Models
Explore other models you can integrate.
GPT-5.6 Sol
前沿旗舰 Agentic 编程模型
GPT-5.6 Terra
日常均衡 Agentic 编程模型
GPT-5.6 Luna
快而省的 Agentic 编程模型
GPT-5.5
旗舰对话与推理模型
GPT Image 2
高质量文生图 / 图生图模型
Nano Banana 2
高质量文生图 / 图生图模型
Nano Banana Pro
旗舰级文生图 / 图生图模型
Claude Sonnet 4.6
均衡高效的对话 / 代码模型
Claude Opus 5
Anthropic 新一代旗舰模型
Gemini 3.1 Pro
Google 新一代旗舰推理模型
Gemini 3.6 Flash
新一代高速思考模型 · 四档思考预算
Gemini 3.6 Flash High
深度思考档
Gemini 3.6 Flash Low
极速低耗档
Gemini 3.6 Flash Tiered
自动调档
Gemini 3 Flash
高速低延迟，高性价比对话模型
Gemini 3.5 Flash
新一代高速思考模型
Gemini 2.5 Flash
高速低延迟，高性价比对话
Veo 3.1
文生 / 图生视频 · 多档 · 多分辨率
Seedance 2.5
文生 / 图生视频 · 最长 30 秒
Seedance 2.0
文生 / 图生视频 · 4–15 秒
Seedance 2.0 Fast
低延迟 · 最省
MiniMax H3
1440P · 原生音频
