Fable 5 (Claude Fable 5) is Anthropic's most powerful generally available AI model, released on June 9, 2026. It is a Mythos-class conversational model made safe for general use, with state-of-the-art results across software engineering, knowledge work, vision, and scientific research — positioned as a new tier above Claude Opus 4.8.

Is fable5.io an official Anthropic or Fable 5 site?

No. fable5.io is an independent community guide and prompt workspace. It is not affiliated with, endorsed by, or operated by Anthropic. Claude and Fable are Anthropic's marks, used here only to describe the model this guide covers.

How can I access the Fable 5 model?

Fable 5 is available in the Claude apps on paid plans (included on Pro, Max, Team, and seat-based Enterprise until June 22, 2026, with usage credits afterwards), via the Claude API under the model ID claude-fable-5, on AWS, Google Cloud, and Microsoft Foundry, in GitHub Copilot, and through routers such as OpenRouter (anthropic/claude-fable-5).

How much does Fable 5 cost?

API pricing is $10 per million input tokens and $50 per million output tokens — double Claude Opus 4.8 — with a 1M-token context window and up to 128K output tokens. Prompt caching offers a 90% input-token discount on cached content. App availability depends on your Claude plan.

Is the free chat on fable5.io the real Fable 5 model?

No. 'Fable 5' here is the brand name of this site's own free assistant, not Anthropic's Claude Fable 5 model. The real Claude Fable 5 is available only through official channels: the Claude apps, the Claude API, and the major cloud platforms.

What's the difference between the Chat and the Playground?

The Chat is a free, claude-style streaming conversation: multi-turn, Markdown answers, and history saved in your browser. The Playground is a one-shot tool for refining a single prompt with four structured modes (Refine, Creative, Analytical, Safety Review) on free open-weight models. Neither is Anthropic's Fable 5 itself.

Which AI models power the Playground?

Free open-weight models routed through OpenRouter — currently OpenAI GPT-OSS 120B, Moonshot Kimi K2.6, Meta Llama 3.3 70B, Qwen3 Next 80B, and GLM 4.5 Air, with automatic fallback when a free provider is busy. The Models page lists context windows and pricing for the wider catalogue, refreshed daily.

AI model directory

Context windows, pricing, and modality for the models available through OpenRouter — the catalogue behind the Fable 5 Playground. Data refreshes daily from the public OpenRouter API.

Where Fable 5 sits

Claude Fable 5anthropic/claude-fable-5

Anthropic’s flagship, released June 9, 2026 — the most expensive and most capable Claude tier. Read the full breakdown in the Fable 5 guide.

context

$10

in / 1M tok

$50

out / 1M tok

Playground picks — free models we route to

GPT-OSS 120Bfree · 128K ctx

OpenAI's open-weight model. Reliable general default.

openai/gpt-oss-120b:free

Kimi K2.6free · 256K ctx

Strong long-context generalist from MoonshotAI.

moonshotai/kimi-k2.6:free

Llama 3.3 70Bfree · 128K ctx

Meta's dependable instruction-tuned workhorse.

meta-llama/llama-3.3-70b-instruct:free

Qwen3 Next 80Bfree · 256K ctx

Efficient mixture-of-experts instruct model from Qwen.

qwen/qwen3-next-80b-a3b-instruct:free

GLM 4.5 Airfree · 128K ctx

Lightweight bilingual model from Z.ai.

z-ai/glm-4.5-air:free

Verified working on June 10, 2026. Free routes are rate-limited upstream and can be busy at peak times — the Playground falls back through this list automatically.

Full catalogue

Free models only428 of 428 models

Model	Context	Prompt $/M	Output $/M	Modality
OpenAI: GPT-6 Astra openai/gpt-6-astra	1.1M	$10.00	$50.00	text+image+file->text
OpenAI: GPT-6 Astra (batch) openai/gpt-6-astra:batch	1.1M	$5.00	$25.00	text+image+file->text
OpenAI: GPT-6 Astra Pro openai/gpt-6-astra-pro	1.1M	$10.00	$50.00	text+image+file->text
OpenAI: GPT-6 Astra Pro (batch) openai/gpt-6-astra-pro:batch	1.1M	$5.00	$25.00	text+image+file->text
inclusionAI: Ling 3.0 Flash Sante (free)free inclusionai/ling-3.0-flash-sante:free	256K	Free	Free	text->text
Qwen: Qwen3.8 Max (0902) qwen/qwen3.8-max-0902	1M	$2.00	$6.00	text+image+video->text
Meta: Muse Spark 1.3 Contributor meta/muse-spark-1.3-contributor	1.0M	$0.10	$0.20	text+image+file+audio+video->text
Meta: Muse Spark 1.3 meta/muse-spark-1.3	1.0M	$1.25	$4.25	text+image+file+audio+video->text
Google: Gemini 3.8 Flash google/gemini-3.8-flash	1.0M	$0.75	$3.75	text+image+file+audio+video->text
Google: Gemini 3.8 Flash (batch) google/gemini-3.8-flash:batch	1.0M	$0.38	$1.88	text+image+file+audio+video->text
Anthropic: Claude Fable 5.1 anthropic/claude-fable-5.1	1M	$10.00	$50.00	text+image+file->text
Anthropic: Claude Fable 5.1 (batch) anthropic/claude-fable-5.1:batch	1M	$5.00	$25.00	text+image+file->text
Inception: Mercury 2.5 Preview inception/mercury-2.5-preview	254K	$0.04	$0.15	text->text
IBM: Granite 4.2 8B ibm-granite/granite-4.2-8b	128K	$0.10	$0.15	text->text
Tencent: Hy4 preview tencent/hy4-preview	1.0M	$0.83	$2.50	text->text
inclusionAI: Ling 3.0 Flash Fin inclusionai/ling-3.0-flash-fin	256K	$0.06	$0.18	text->text
inclusionAI: Ling 3.0 Flash Fin (free)free inclusionai/ling-3.0-flash-fin:free	256K	Free	Free	text->text
Z.ai: GLM Flash Latest ~z-ai/glm-flash-latest	1.3M	$0.07	$0.24	text+image+video->text
Qwen: Qwen3.8 Flash qwen/qwen3.8-flash	1M	$0.15	$0.47	text+image+video->text
Z.ai: GLM 5.3 Flash z-ai/glm-5.3-flash	1.3M	$0.07	$0.25	text+image+video->text
Z.ai: GLM 5.3 Flash (batch) z-ai/glm-5.3-flash:batch	1.0M	$0.15	$0.50	text+image+video->text
Meta: Muse Spark 1.2 Contributor meta/muse-spark-1.2-contributor	1.0M	$0.10	$0.20	text+image+file+audio+video->text
DeepSeek: DeepSeek V4 Flash Vision Exp deepseek/deepseek-v4-flash-vision-exp	1.0M	$0.22	$0.66	text+image->text
Tencent: Hy-MT2-1.8B tencent/hy-mt2-1.8b	8K	$0.04	$0.18	text->text
Tencent: Hy-MT2-30B-A3B tencent/hy-mt2-30b-a3b	8K	$0.07	$0.29	text->text
Z.ai: GLM Latest ~z-ai/glm-latest	1.3M	$1.12	$3.52	text->text
Tencent: Hy-MT2-7B tencent/hy-mt2-7b	8K	$0.07	$0.29	text->text
Z.ai: GLM 5.3 z-ai/glm-5.3	1.3M	$1.40	$4.40	text->text
Qwen: Qwen3.8 27B qwen/qwen3.8-27b	1M	$0.42	$3.00	text+image+video->text
Dots Studio: Dots3-Note Preview (free)free dots-studio/dots-3-note-preview:free	500K	Free	Free	text+image->text
Google: Gemini 3.7 Flash google/gemini-3.7-flash	1.0M	$0.75	$3.75	text+image+file+audio+video->text
Google: Gemini 3.7 Flash (batch) google/gemini-3.7-flash:batch	1.0M	$0.38	$1.88	text+image+file+audio+video->text
ByteDance Seed: Seed 2.1 Turbo bytedance-seed/seed-2-1-turbo	256K	$0.50	$2.50	text+image+video->text
Qwen: Qwen3.8 2.4T A95B qwen/qwen3.8-2.4t-a95b	1.0M	$2.00	$6.00	text->text
Qwen: Qwen3.8 2.4T A95B (batch) qwen/qwen3.8-2.4t-a95b:batch	1.0M	$2.00	$6.00	text->text
ByteDance Seed: Seed-2.0-Code bytedance-seed/seed-2.0-code	256K	$0.50	$3.00	text+image+video->text
DeepSeek: DeepSeek V4 Pro 0813 deepseek/deepseek-v4-pro-0813	1.0M	$1.05	$3.15	text->text
DeepSeek: DeepSeek V4 Pro 0813 (batch) deepseek/deepseek-v4-pro-0813:batch	1.0M	$1.32	$3.96	text->text
SpaceXAI: Grok 4.6 x-ai/grok-4.6	488K	$2.00	$6.00	text+image+file->text
LiquidAI: LFM2.5-2.6B (free)free liquid/lfm-2.5-2.6b:free	64K	Free	Free	text->text
NVIDIA: Nemotron 3.5 Lightning nvidia/nemotron-3.5-lightning	256K	$0.08	$0.20	text->text
NVIDIA: Nemotron 3.5 Lightning (free)free nvidia/nemotron-3.5-lightning:free	1M	Free	Free	text->text
Sakana: Sakana Namazu sakana/sakana-namazu	256K	$0.95	$4.00	text+image+file->text
Upstage: Solar Pro 4 upstage/solar-pro4	512K	$0.03	$0.12	text->text
Meta: Muse Glimmer 30B meta/muse-glimmer-30b	128K	$0.30	$1.10	text+image->text
Meta: Muse Glimmer 30B (batch) meta/muse-glimmer-30b:batch	128K	$0.35	$1.50	text+image->text
Meta: Muse Spark 1.2 meta/muse-spark-1.2	1.0M	$1.25	$4.25	text+image+file+audio+video->text
DeepSeek V4 Flash Latest ~deepseek/deepseek-v4-flash-latest	1.3M	$0.05	$0.16	text->text
DeepSeek: DeepSeek V4 Flash 0731 deepseek/deepseek-v4-flash-0731	1.3M	$0.07	$0.18	text->text
DeepSeek: DeepSeek V4 Flash 0731 (batch) deepseek/deepseek-v4-flash-0731:batch	1.0M	$0.14	$0.28	text->text
Thinking Machines: Inkling Small thinkingmachines/inkling-small	1.0M	$0.45	$1.20	text+image+audio->text
Thinking Machines: Inkling Small (batch) thinkingmachines/inkling-small:batch	512K	$0.50	$1.20	text+image+audio->text
Thinking Machines: Inkling Small (free)free thinkingmachines/inkling-small:free	1.0M	Free	Free	text+image+audio->text
Qwen: Qwen3.7 Flash qwen/qwen3.7-flash	1M	$0.03	$0.13	text+image+video->text
Claude Opus 5 anthropic/claude-opus-5	1M	$5.00	$25.00	text+image+file->text
Claude Opus 5 (batch) anthropic/claude-opus-5:batch	1M	$2.50	$12.50	text+image+file->text
inclusionAI: Ling 3.0 Flash inclusionai/ling-3.0-flash	256K	$0.02	$0.06	text->text
Poolside: Laguna S 2.1 poolside/laguna-s-2.1	1.0M	$0.09	$0.18	text->text
Poolside: Laguna S 2.1 (free)free poolside/laguna-s-2.1:free	256K	Free	Free	text->text
Google: Gemini 3.6 Flash google/gemini-3.6-flash	1.0M	$0.75	$3.75	text+image+file+audio+video->text
Google: Gemini 3.6 Flash (batch) google/gemini-3.6-flash:batch	1.0M	$0.38	$1.88	text+image+file+audio+video->text
Google: Gemini 3.5 Flash Lite google/gemini-3.5-flash-lite	1.0M	$0.30	$2.50	text+image+file+audio+video->text
Google: Gemini 3.5 Flash Lite (batch) google/gemini-3.5-flash-lite:batch	1.0M	$0.15	$1.25	text+image+file+audio+video->text
Meituan: LongCat 2.0 meituan/longcat-2.0	1.0M	$0.30	$1.20	text->text
Thinking Machines: Inkling thinkingmachines/inkling	1.0M	$1.00	$4.05	text+image+audio->text
Thinking Machines: Inkling (batch) thinkingmachines/inkling:batch	512K	$1.00	$4.05	text+image+audio->text
Thinking Machines: Inkling (free)free thinkingmachines/inkling:free	1.0M	Free	Free	text+image+audio->text
Auto Router (Beta) openrouter/auto-beta	2M	$-1000000.0000	$-1000000.0000	text+image+file+audio+video->text+image
MoonshotAI: Kimi K3 moonshotai/kimi-k3	1.0M	$3.00	$15.00	text+image+video->text
MoonshotAI: Kimi K3 (batch) moonshotai/kimi-k3:batch	1.0M	$3.00	$15.00	text+image+video->text
Meta: Muse Spark 1.1 meta/muse-spark-1.1	1.0M	$1.25	$4.25	text+image+file+audio+video->text
Kwaipilot: KAT-Coder-Pro V2.5 kwaipilot/kat-coder-pro-v2.5	256K	$0.74	$2.96	text->text
OpenAI: GPT-5.6 Luna Pro openai/gpt-5.6-luna-pro	1.1M	$0.20	$1.20	text+image+file->text
OpenAI: GPT-5.6 Luna Pro (batch) openai/gpt-5.6-luna-pro:batch	1.1M	$0.10	$0.60	text+image+file->text
OpenAI: GPT-5.6 Luna openai/gpt-5.6-luna	1.1M	$0.20	$1.20	text+image+file->text
OpenAI: GPT-5.6 Luna (batch) openai/gpt-5.6-luna:batch	1.1M	$0.10	$0.60	text+image+file->text
OpenAI: GPT-5.6 Terra Pro openai/gpt-5.6-terra-pro	1.1M	$2.00	$12.00	text+image+file->text
OpenAI: GPT-5.6 Terra Pro (batch) openai/gpt-5.6-terra-pro:batch	1.1M	$1.00	$6.00	text+image+file->text
OpenAI: GPT-5.6 Terra openai/gpt-5.6-terra	1.1M	$2.00	$12.00	text+image+file->text
OpenAI: GPT-5.6 Terra (batch) openai/gpt-5.6-terra:batch	1.1M	$1.00	$6.00	text+image+file->text
OpenAI: GPT-5.6 Sol Pro openai/gpt-5.6-sol-pro	1.1M	$2.00	$10.00	text+image+file->text
OpenAI: GPT-5.6 Sol Pro (batch) openai/gpt-5.6-sol-pro:batch	1.1M	$1.00	$5.00	text+image+file->text
OpenAI: GPT-5.6 Sol openai/gpt-5.6-sol	1.1M	$2.00	$10.00	text+image+file->text
OpenAI: GPT-5.6 Sol (batch) openai/gpt-5.6-sol:batch	1.1M	$1.00	$5.00	text+image+file->text
SpaceXAI: Grok 4.5 x-ai/grok-4.5	488K	$2.00	$6.00	text+image+file->text
xAI: Grok Latest ~x-ai/grok-latest	488K	$2.00	$6.00	text+image+file->text
AionLabs: Aion-3.0-Mini aion-labs/aion-3.0-mini	128K	$0.70	$1.40	text->text
AionLabs: Aion-3.0 aion-labs/aion-3.0	128K	$3.00	$6.00	text->text
Tencent: Hy3 tencent/hy3	256K	$0.13	$0.53	text->text
Poolside: Laguna XS 2.1 poolside/laguna-xs-2.1	256K	$0.06	$0.12	text->text
Poolside: Laguna XS 2.1 (free)free poolside/laguna-xs-2.1:free	256K	Free	Free	text->text
Anthropic: Claude Sonnet 5 anthropic/claude-sonnet-5	1M	$2.00	$10.00	text+image+file->text
Anthropic: Claude Sonnet 5 (batch) anthropic/claude-sonnet-5:batch	1M	$1.00	$5.00	text+image+file->text
Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) google/gemini-3.1-flash-lite-image	64K	$0.25	$1.50	text+image->text+image
Nex AGI: Nex-N2-Mini nex-agi/nex-n2-mini	256K	$0.02	$0.10	text+image->text
Sakana: Fugu Ultra sakana/fugu-ultra	1M	$5.00	$30.00	text+image->text
Google: Nano Banana 2 (Gemini 3.1 Flash Image) google/gemini-3.1-flash-image	128K	$0.50	$3.00	text+image->text+image
Google: Nano Banana Pro (Gemini 3 Pro Image) google/gemini-3-pro-image	128K	$2.00	$12.00	text+image->text+image
Cohere: North Mini Code (free)free cohere/north-mini-code:free	250K	Free	Free	text->text
Z.ai: GLM 5.2 z-ai/glm-5.2	1.0M	$0.97	$3.04	text->text

Showing the first 100 of 428 matches — refine the search to narrow results.

Source: the public OpenRouter models API. Prices are USD per million tokens as reported by OpenRouter and can change without notice — always confirm on the provider’s page before budgeting. fable5.io is not affiliated with OpenRouter or any model provider; this directory exists because picking a model is step one of good prompt work.