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 only467 of 467 models

Model	Context	Prompt $/M	Output $/M	Modality
StepFun: Step 5 Preview stepfun/step-5-preview	1M	$1.00	$2.70	text+image+video->text
Anthropic: Claude Haiku 5.5 anthropic/claude-haiku-5.5	1M	$0.10	$0.50	text+image+file->text
Anthropic: Claude Haiku 5.5 (batch) anthropic/claude-haiku-5.5:batch	1M	$0.05	$0.25	text+image+file->text
Google: Nano Banana 2.1 google/gemini-nano-banana-2.1	64K	$1.50	$7.50	text+image->text+image
Mistral: Mistral Large 4 mistralai/mistral-large-4-0	1.0M	$0.68	$2.09	text+image->text
inclusionAI: Ling 3.1 Flashfree inclusionai/ling-3.1-flash	256K	Free	Free	text->text
Apodex: Apodex 1.1 Mini (free)free apodex/apodex-1.1-mini:free	256K	Free	Free	text->text
Pareto 26.10 Preview unbiased/pareto-26.10-preview	1.0M	$0.80	$3.20	text+image->text
OpenAI: GPT-6.1 Sol Pro openai/gpt-6.1-sol-pro	1.1M	$2.00	$10.00	text+image+file->text
OpenAI: GPT-6.1 Sol openai/gpt-6.1-sol	1.1M	$2.00	$10.00	text+image+file->text
Anthropic: Claude Sonnet 5.5 anthropic/claude-sonnet-5.5	1M	$2.00	$10.00	text+image+file->text
Anthropic: Claude Sonnet 5.5 (batch) anthropic/claude-sonnet-5.5:batch	1M	$1.00	$5.00	text+image+file->text
TypeSafe: Jev Router typesafe/jev-router	1M	$-1000000.0000	$-1000000.0000	text+image+file+audio+video->text
Perceptron: Perceptron Mk1.5 perceptron/perceptron-mk1.5	36K	$0.15	$1.50	text+image+audio+video->text
Fireworks: Ember-1 fireworks/ember-1	1.0M	$3.00	$15.00	text+image->text
Z.ai: GLM 5.3 Prime z-ai/glm-5.3-prime	1M	$2.80	$8.80	text->text
Qwen: Qwen3.8 Max Prime qwen/qwen3.8-max-prime	1M	$4.00	$12.00	text+image+video->text
AionLabs: Aion 3.5 Mini aion-labs/aion-3.5-mini	256K	$0.70	$1.40	text->text
AionLabs: Aion 3.5 aion-labs/aion-3.5	256K	$3.00	$6.00	text->text
Upstage: Solar Mini 4 upstage/solar-mini4	512K	$0.05	$0.20	text->text
Cohere: Command A+ cohere/command-a-plus	188K	$0.30	$1.50	text+image->text
OpenAI: GPT-6 Luna Pro openai/gpt-6-luna-pro	1.1M	$0.10	$0.50	text+image+file->text
OpenAI: GPT-6 Luna Pro (batch) openai/gpt-6-luna-pro:batch	1.1M	$0.05	$0.25	text+image+file->text
OpenAI: GPT-6 Luna openai/gpt-6-luna	1.1M	$0.10	$0.50	text+image+file->text
OpenAI: GPT-6 Luna (batch) openai/gpt-6-luna:batch	1.1M	$0.05	$0.25	text+image+file->text
OpenAI: GPT-6 Sol Pro openai/gpt-6-sol-pro	1.1M	$2.00	$10.00	text+image+file->text
OpenAI: GPT-6 Sol Pro (batch) openai/gpt-6-sol-pro:batch	1.1M	$1.00	$5.00	text+image+file->text
OpenAI: GPT-6 Sol openai/gpt-6-sol	1.1M	$2.00	$10.00	text+image+file->text
OpenAI: GPT-6 Sol (batch) openai/gpt-6-sol:batch	1.1M	$1.00	$5.00	text+image+file->text
Anthropic: Claude Opus 5.5 anthropic/claude-opus-5.5	1M	$4.00	$20.00	text+image+file->text
Anthropic: Claude Opus 5.5 (batch) anthropic/claude-opus-5.5:batch	1M	$2.00	$10.00	text+image+file->text
NVIDIA: Switchyard nvidia/switchyard	1M	$-1000000.0000	$-1000000.0000	text->text
Xiaomi: MiMo-V2.6-Pro-UltraSpeed xiaomi/mimo-v2.6-pro-ultraspeed	1.0M	$4.35	$8.70	text+image+audio+video->text
Xiaomi: MiMo-V2.6-Flash xiaomi/mimo-v2.6-flash	1.1M	$0.14	$0.28	text+image+audio+video->text
Xiaomi: MiMo-V2.6-Pro xiaomi/mimo-v2.6-pro	1.1M	$0.43	$0.87	text+image+audio+video->text
SpaceXAI: Grok 4.7 x-ai/grok-4.7	488K	$2.00	$6.00	text+image+file->text
Qwen: Qwen3.8 Omni Flash qwen/qwen3.8-omni-flash	1M	$0.15	$0.47	text+image+audio+video->text
PrismML: Ternary Bonsai 2 27B prism-ml/ternary-bonsai-2-27b	256K	$0.07	$0.50	text+image->text
Z.ai: GLM 5.3 FlashX z-ai/glm-5.3-flashx	1.0M	$0.37	$1.25	text+image+video->text
Pareto unbiased/pareto	256K	$2.50	$7.50	text+image->text
DeepSeek: DeepSeek Pro Latest ~deepseek/deepseek-pro-latest	1.0M	$0.13	$8.00	text->text
DeepSeek: DeepSeek Flash Latest ~deepseek/deepseek-flash-latest	1.0M	$0.03	$1.20	text+image->text
Inference.net: Schematron V2 Turbo inference-net/schematron-v2-turbo	125K	$0.03	$0.15	text->text
Inference.net: Schematron V2 Small inference-net/schematron-v2-small	125K	$0.05	$0.23	text->text
OpenAI: GPT Astra Latest ~openai/gpt-astra-latest	1.1M	$10.00	$50.00	text+image+file->text
OpenAI: GPT Sol Latest ~openai/gpt-sol-latest	1.1M	$2.00	$10.00	text+image+file->text
OpenAI: GPT Terra Latest ~openai/gpt-terra-latest	1.1M	$2.00	$12.00	text+image+file->text
OpenAI: GPT Luna Latest ~openai/gpt-luna-latest	1.1M	$0.10	$0.50	text+image+file->text
Sakana: Fugu Ultra v2 sakana/fugu-ultra-v2	1M	$5.00	$30.00	text+image+file->text
Sakana: Fugu Max sakana/fugu-max	1M	$2.00	$6.00	text+image+file->text
inclusionAI: Ling 3.0 Flash VL inclusionai/ling-3.0-flash-vl	256K	$0.02	$0.06	text+image+video->text
DeepSeek: DeepSeek V4.1 Flash deepseek/deepseek-v4.1-flash	1.0M	$0.30	$1.20	text+image->text
DeepSeek: DeepSeek V4.1 Flash (batch) deepseek/deepseek-v4.1-flash:batch	1.0M	$0.11	$0.34	text+image->text
Inception: Mercury 2.5 inception/mercury-2.5	254K	$0.04	$0.15	text->text
Nex AGI: Nex-N2.5-Mini nex-agi/nex-n2.5-mini	256K	$0.02	$0.10	text+image->text
Nex AGI: Nex-N2.5-Pro nex-agi/nex-n2.5-pro	256K	$0.07	$0.25	text+image->text
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 inclusionai/ling-3.0-flash-sante	256K	$0.04	$0.12	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+video->text
Meta: Muse Spark 1.3 meta/muse-spark-1.3	1.0M	$1.25	$4.25	text+image+file+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
IBM: Granite 4.2 8B ibm-granite/granite-4.2-8b	128K	$0.06	$0.25	text->text
Tencent: Hy4 preview tencent/hy4-preview	1.0M	$0.75	$2.25	text->text
inclusionAI: Ling 3.0 Flash Fin inclusionai/ling-3.0-flash-fin	256K	$0.04	$0.12	text->text
Z.ai: GLM Flash Latest ~z-ai/glm-flash-latest	1.0M	$0.03	$3.52	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	1.0M	$0.15	$0.50	text+image+video->text
Z.ai: GLM 5.3 Flash (batch) z-ai/glm-5.3-flash:batch	1.0M	$0.06	$0.20	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+video->text
DeepSeek: DeepSeek V4 Flash Vision Exp deepseek/deepseek-v4-flash-vision-exp	1.0M	$0.22	$0.65	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	1.0M	$0.06	$12.00	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	1.0M	$0.10	$4.20	text->text
Z.ai: GLM 5.3 (batch) z-ai/glm-5.3:batch	1.0M	$0.45	$2.00	text->text
Qwen: Qwen3.8 27B qwen/qwen3.8-27b	1M	$0.42	$2.55	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
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	$0.66	$1.98	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	$0.05	$0.14	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	$0.09	$0.36	text->text
Meta: Muse Glimmer 30B meta/muse-glimmer-30b	128K	$0.30	$1.20	text+image->text
Meta: Muse Spark 1.2 meta/muse-spark-1.2	1.0M	$1.25	$4.25	text+image+file+video->text
DeepSeek: DeepSeek V4 Flash Latest ~deepseek/deepseek-v4-flash-latest	1.0M	$0.0037	$0.55	text->text

Showing the first 100 of 467 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.