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Claude Fable 5

Anthropicflagship

Anthropic's June 9 2026 flagship and the first generally available model in the Mythos class: the new #1 overall. State-of-the-art on nearly every tested benchmark: SWE-bench Pro 80.3% (vs Opus 4.8 69.2%, GPT-5.5 58.6%), FrontierCode Diamond 29.3%, OSWorld-Verified computer use 85.0%, and a leading GDPval-AA knowledge-work Elo of 1932. Routes high-risk cyber/bio prompts to Opus 4.8 as a safety fallback. $10/$50 pricing (2x Opus 4.8) with a 90% prompt-caching discount; exact context window and max output were not officially disclosed at launch.

Context Window

1M

tokens

Max Output

64K

tokens

Input Price

$10

per 1M tokens

Output Price

$50

per 1M tokens

Speed

58

tokens/sec

Released

Jun 2026

2026-06-09

Blended Cost

$30.00

per 1M tokens

Value Score

3.3

quality per $

Capabilities

ChatVisionFunction CallingCode GenerationReasoning

Benchmarks

Quality Index
100
MMLU Pro
92
HumanEval (Coding)
98
MATH
95
Arena ELO
1525

Price vs Quality

6080100$1.00$10.00$100.00Blended cost per 1M tokens (log scale) →GPT-4o — $6.25/1M, quality 85GPT-4o Mini — $0.375/1M, quality 72o3 Mini — $2.75/1M, quality 88o3 — $5.00/1M, quality 94GPT-4.1 — $5.00/1M, quality 89Claude Opus 4 — $45.00/1M, quality 91Claude Sonnet 4 — $9.00/1M, quality 88Claude 3.5 Haiku — $2.40/1M, quality 75Gemini 2.5 Pro — $5.63/1M, quality 92Gemini 2.0 Flash — $0.250/1M, quality 74Llama 4 Maverick — $0.400/1M, quality 80Llama 4 Scout — $0.275/1M, quality 71Mistral Large 2 — $4.00/1M, quality 79Codestral — $0.600/1M, quality 76DeepSeek V3 — $0.685/1M, quality 86DeepSeek R1 — $1.37/1M, quality 91Grok 3 — $9.00/1M, quality 87Grok 3 Mini — $0.400/1M, quality 78Command R+ — $6.25/1M, quality 68Amazon Nova Pro — $2.00/1M, quality 70Qwen 2.5 72B — $0.600/1M, quality 80Qwen 2.5 Coder 32B — $0.300/1M, quality 74Sonar Pro — $9.00/1M, quality 78GPT-5.5 — $17.50/1M, quality 97GPT-5.5 Pro — $105.00/1M, quality 96Claude Opus 4.7 — $15.00/1M, quality 96Gemini 3.1 Pro — $7.00/1M, quality 96DeepSeek V4 Pro — $1.32/1M, quality 89DeepSeek V4 Flash — $0.210/1M, quality 84Qwen 3.6 Plus — $3.50/1M, quality 86Grok 4.3 — $1.88/1M, quality 93Kimi K2.6 — $2.11/1M, quality 92Kimi K3 — $9.00/1M, quality 97Claude Sonnet 4.6 — $9.00/1M, quality 90GLM-5.1 — $2.03/1M, quality 88Claude Opus 4.8 — $15.00/1M, quality 98Qwen 3.7 Max — $5.00/1M, quality 94MiniMax M3 — $1.50/1M, quality 89GPT-5.6 Sol — $17.50/1M, quality 98GPT-5.6 Terra — $7.00/1M, quality 93GPT-5.6 Luna — $0.700/1M, quality 83Gemini 3.6 Flash — $2.25/1M, quality 90Gemini 3.5 Flash-Lite — $1.40/1M, quality 79Claude Sonnet 5 — $9.00/1M, quality 93GLM-5.2 — $2.90/1M, quality 91Claude Opus 5 — $15.00/1M, quality 99Claude Mythos 5 — $30.00/1M, quality 100Grok 4.5 — $4.00/1M, quality 94Qwen3.8 Max — $4.00/1M, quality 96Claude Fable 5 — $30.00/1M, quality 100Claude Fable 5
Cheaper is left, more capable is up. Nothing in the directory is both cheaper and at least as capable. Self-host models are left off the price axis — their cost depends on the hardware you run them on, not on tokens.

Context Window in Context

  • ▸ Claude Fable 51M
  • GPT-4.11M
  • Gemini 2.5 Pro1M
  • Gemini 2.0 Flash1M
  • Llama 4 Maverick1M
  • GPT-5.51M
  • GPT-5.5 Pro1M
  • Claude Opus 4.71M
Bar length is logarithmic — each full step is 10× the tokens. Shown against the models with the nearest context windows, not the directory extremes.
Try in Playground Use via Swfte ConnectAnthropic Docs

Non è ancora sul nostro gateway

Swfte Connect non ha una chiave per Claude Fable 5, quindi qui non c'è nulla da eseguire. Aggiungi la tua chiave del provider e chiamalo con la stessa API di ogni altro modello di questa directory.

La richiesta
curl https://api.swfte.com/agents/v2/gateway/chat/completions \
  -H "Authorization: Bearer $SWFTE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic:claude-fable-5",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
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About Claude Fable 5

Claude Fable 5 is a flagship AI model by Anthropic, released on June 9, 2026. It supports a context window of 1000K tokens and can generate up to 64K output tokens.

At $10 per million input tokens and $50 per million output tokens, its blended cost of $30.00/1M tokens places it in the premium pricing tier. Its value score of 3.3 reflects the balance of quality and cost.

Using Claude Fable 5 with Swfte

Access Claude Fable 5 through Swfte Connect, our unified LLM gateway. Connect gives you a single API for 50+ models, with automatic routing, cost optimization, and fallback handling. You can also try Claude Fable 5 in our AI Playground before integrating.

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