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 only343 of 343 models

Model	Context	Prompt $/M	Output $/M	Modality
Ling-3.0-flash (free)free inclusionai/ling-3.0-flash:free	256K	Free	Free	text->text
Poolside: Laguna S 2.1 poolside/laguna-s-2.1	1.0M	$0.10	$0.20	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	$1.50	$7.50	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
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
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->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-Air V2.5 kwaipilot/kat-coder-air-v2.5	250K	$0.15	$0.60	text->text
Kwaipilot: KAT-Coder-Pro V2.5 kwaipilot/kat-coder-pro-v2.5	250K	$0.74	$2.96	text->text
OpenAI: GPT-5.6 Luna Pro openai/gpt-5.6-luna-pro	1.1M	$1.00	$6.00	text+image+file->text
OpenAI: GPT-5.6 Luna openai/gpt-5.6-luna	1.1M	$1.00	$6.00	text+image+file->text
OpenAI: GPT-5.6 Terra Pro openai/gpt-5.6-terra-pro	1.1M	$2.50	$15.00	text+image+file->text
OpenAI: GPT-5.6 Terra openai/gpt-5.6-terra	1.1M	$2.50	$15.00	text+image+file->text
OpenAI: GPT-5.6 Sol Pro openai/gpt-5.6-sol-pro	1.1M	$5.00	$30.00	text+image+file->text
OpenAI: GPT-5.6 Sol openai/gpt-5.6-sol	1.1M	$5.00	$30.00	text+image+file->text
xAI: 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
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	$0.77	$2.41	text->text
OpenRouter: Fusion openrouter/fusion	1M	$-1000000.0000	$-1000000.0000	text->text
MoonshotAI: Kimi K2.7 Code moonshotai/kimi-k2.7-code	256K	$0.71	$3.49	text+image->text
Anthropic: Claude Fable Latest ~anthropic/claude-fable-latest	1M	$10.00	$50.00	text+image+file->text
Anthropic: Claude Fable 5 anthropic/claude-fable-5	1M	$10.00	$50.00	text+image+file->text
Nex AGI: Nex-N2-Pro nex-agi/nex-n2-pro	256K	$0.25	$1.00	text+image->text
NVIDIA: Nemotron 3.5 Content Safety (free)free nvidia/nemotron-3.5-content-safety:free	125K	Free	Free	text+image->text
NVIDIA: Nemotron 3 Ultra nvidia/nemotron-3-ultra-550b-a55b	500K	$0.50	$2.20	text->text
NVIDIA: Nemotron 3 Ultra (free)free nvidia/nemotron-3-ultra-550b-a55b:free	1M	Free	Free	text->text
Qwen: Qwen3.7 Plus qwen/qwen3.7-plus	1M	$0.32	$1.28	text+image->text
MiniMax: MiniMax M3 minimax/minimax-m3	1.0M	$0.30	$1.20	text+image+video->text
StepFun: Step 3.7 Flash stepfun/step-3.7-flash	256K	$0.20	$1.15	text+image+video->text
Anthropic: Claude Opus 4.8 (Fast) anthropic/claude-opus-4.8-fast	1M	$10.00	$50.00	text+image+file->text
Anthropic: Claude Opus 4.8 anthropic/claude-opus-4.8	1M	$5.00	$25.00	text+image+file->text
Qwen: Qwen3.7 Max qwen/qwen3.7-max	1M	$1.48	$4.42	text->text
xAI: Grok Build 0.1 x-ai/grok-build-0.1	250K	$1.00	$2.00	text+image+file->text
Google: Gemini 3.5 Flash google/gemini-3.5-flash	1.0M	$1.50	$9.00	text+image+file+audio+video->text
Anthropic: Claude Opus 4.7 (Fast) anthropic/claude-opus-4.7-fast	1M	$30.00	$150.00	text+image+file->text
Perceptron: Perceptron Mk1 perceptron/perceptron-mk1	32K	$0.15	$1.50	text+image+video->text
inclusionAI: Ring-2.6-1T inclusionai/ring-2.6-1t	256K	$0.07	$0.63	text->text
Google: Gemini 3.1 Flash Lite google/gemini-3.1-flash-lite	1.0M	$0.25	$1.50	text+image+file+audio+video->text
OpenAI: GPT Chat Latest openai/gpt-chat-latest	391K	$5.00	$30.00	text+image+file->text
xAI: Grok 4.3 x-ai/grok-4.3	1M	$1.25	$2.50	text+image+file->text
IBM: Granite 4.1 8B ibm-granite/granite-4.1-8b	128K	$0.05	$0.10	text->text
Mistral: Mistral Medium 3.5 mistralai/mistral-medium-3-5	256K	$1.50	$7.50	text+image+file->text
NVIDIA: Nemotron 3 Nano Omni (free)free nvidia/nemotron-3-nano-omni-30b-a3b-reasoning:free	250K	Free	Free	text+image+audio+video->text
Poolside: Laguna M.1 poolside/laguna-m.1	256K	$0.20	$0.40	text->text
Poolside: Laguna M.1 (free)free poolside/laguna-m.1:free	256K	Free	Free	text->text
Anthropic Claude Haiku Latest ~anthropic/claude-haiku-latest	195K	$1.00	$5.00	text+image+file->text
OpenAI GPT Mini Latest ~openai/gpt-mini-latest	391K	$0.75	$4.50	text+image+file->text
Google Gemini Pro Latest ~google/gemini-pro-latest	1.0M	$2.00	$12.00	text+image+file+audio+video->text
MoonshotAI Kimi Latest ~moonshotai/kimi-latest	1.0M	$3.00	$15.00	text+image->text
Google Gemini Flash Latest ~google/gemini-flash-latest	1.0M	$1.50	$7.50	text+image+file+audio+video->text
Anthropic Claude Sonnet Latest ~anthropic/claude-sonnet-latest	1M	$2.00	$10.00	text+image+file->text
OpenAI GPT Latest ~openai/gpt-latest	1.1M	$5.00	$30.00	text+image+file->text
Qwen: Qwen3.5 Plus 2026-04-20 qwen/qwen3.5-plus-20260420	1M	$0.30	$1.80	text+image+video->text
Qwen: Qwen3.6 Flash qwen/qwen3.6-flash	1M	$0.19	$1.13	text+image+video->text
Qwen: Qwen3.6 35B A3B qwen/qwen3.6-35b-a3b	256K	$0.14	$1.00	text+image+video->text
Qwen: Qwen3.6 Max Preview qwen/qwen3.6-max-preview	256K	$1.04	$6.24	text->text
Qwen: Qwen3.6 27B qwen/qwen3.6-27b	256K	$0.29	$2.40	text+image+video->text
OpenAI: GPT-5.5 Pro openai/gpt-5.5-pro	1.1M	$30.00	$180.00	text+image+file->text
OpenAI: GPT-5.5 openai/gpt-5.5	1.1M	$5.00	$30.00	text+image+file->text
DeepSeek: DeepSeek V4 Pro deepseek/deepseek-v4-pro	1.0M	$0.43	$0.87	text->text
DeepSeek: DeepSeek V4 Flash deepseek/deepseek-v4-flash	1.0M	$0.10	$0.20	text->text
inclusionAI: Ling-2.6-1T inclusionai/ling-2.6-1t	256K	$0.07	$0.63	text->text
Tencent: Hy3 preview tencent/hy3-preview	256K	$0.06	$0.21	text->text
Xiaomi: MiMo-V2.5-Pro xiaomi/mimo-v2.5-pro	1.1M	$0.43	$0.87	text->text
Xiaomi: MiMo-V2.5 xiaomi/mimo-v2.5	1.1M	$0.14	$0.28	text+image+audio+video->text
OpenAI: GPT-5.4 Image 2 openai/gpt-5.4-image-2	266K	$8.00	$15.00	text+image+file->text+image
inclusionAI: Ling-2.6-flash inclusionai/ling-2.6-flash	256K	$0.01	$0.03	text->text
Anthropic: Claude Opus Latest ~anthropic/claude-opus-latest	1M	$5.00	$25.00	text+image+file->text
Pareto Code Router openrouter/pareto-code	2M	$-1000000.0000	$-1000000.0000	text->text
MoonshotAI: Kimi K2.6 moonshotai/kimi-k2.6	256K	$0.68	$3.42	text+image->text
Anthropic: Claude Opus 4.7 anthropic/claude-opus-4.7	1M	$5.00	$25.00	text+image+file->text
Z.ai: GLM 5.1 z-ai/glm-5.1	200K	$0.97	$3.04	text->text
Google: Gemma 4 26B A4B google/gemma-4-26b-a4b-it	256K	$0.12	$0.35	text+image+video->text
Google: Gemma 4 26B A4B (free)free google/gemma-4-26b-a4b-it:free	256K	Free	Free	text+image+video->text
Google: Gemma 4 31B google/gemma-4-31b-it	256K	$0.10	$0.35	text+image+video->text
Google: Gemma 4 31B (free)free google/gemma-4-31b-it:free	256K	Free	Free	text+image+video->text
Qwen: Qwen3.6 Plus qwen/qwen3.6-plus	1M	$0.33	$1.95	text+image+video->text
Z.ai: GLM 5V Turbo z-ai/glm-5v-turbo	198K	$1.20	$4.00	text+image+video->text
Arcee AI: Trinity Large Thinking arcee-ai/trinity-large-thinking	256K	$0.25	$0.80	text->text
xAI: Grok 4.20 Multi-Agent x-ai/grok-4.20-multi-agent	2M	$1.25	$2.50	text+image+file->text
xAI: Grok 4.20 x-ai/grok-4.20	2M	$1.25	$2.50	text+image+file->text
Google: Lyria 3 Pro Previewfree google/lyria-3-pro-preview	1.0M	Free	Free	text+image->text+audio
Google: Lyria 3 Clip Previewfree google/lyria-3-clip-preview	1.0M	Free	Free	text+image->text+audio
Kwaipilot: KAT-Coder-Pro V2 kwaipilot/kat-coder-pro-v2	256K	$0.30	$1.20	text->text
Reka Edge rekaai/reka-edge	16K	$0.10	$0.10	text+image+video->text

Showing the first 100 of 343 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.