Claude Fable 5

anthropic/claude-fable-5
NewFeatured
by Anthropic · text+image+file in · text out · 1M ctx · 2026-06-09

Claude Fable 5 is Anthropic's Mythos-class model - a capability tier above the Opus class - made saf…

INPUT$10.00/ 1M tokens
OUTPUT$50.00/ 1M tokens
p50 TTFT4.12 s7d
p95 TTFT299.00 s7d
TRAFFIC9.9Mtokens / 7d

Code samples

from openai import OpenAI

client = OpenAI(
    base_url="https://api.orcarouter.ai/v1",
    api_key="$ORCAROUTER_API_KEY",
)

response = client.chat.completions.create(
    model="anthropic/claude-fable-5",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

Pricing

Input / 1M tokens$10.00
Output / 1M tokens$50.00
Cache read / 1M$1.00
Cache write / 1M$12.50
CurrencyUSD

Performance

p50 TTFT
4.12 s
Output speed
72.0 tok/s
p95 TTFT
299.00 s
Error rate
0.61%

Public benchmarks

AutomationBench
17.4
Blueprint-Bench 2
38.6
FrontierCode (Diamond)
29.3
GDPval.pdf
29.8
Legal Agent Benchmark
13.3
OSWorld-Verified
85.0
SWE-Bench Pro
80.3
Source: artificialanalysis.ai

FAQ

How much does Anthropic: Claude Fable 5 cost on OrcaRouter?
Anthropic: Claude Fable 5 is priced at $10.00 per 1M input tokens and $50.00 per 1M output tokens via OrcaRouter. Pricing is pulled live from the routing layer.
What is Anthropic: Claude Fable 5's context window?
Anthropic: Claude Fable 5 supports a context window of 1M tokens. Use long-context features (RAG, summarisation) up to that limit.
How do I call Anthropic: Claude Fable 5 via the OpenAI SDK?
Set OpenAI base_url to https://api.orcarouter.ai/v1, supply your OrcaRouter API key, and pass model="anthropic/claude-fable-5" in the chat.completions.create call.
Does OrcaRouter rate-limit Anthropic: Claude Fable 5?
Per-model rate limits follow your OrcaRouter plan. Free tiers ship with conservative caps; paid tiers lift them. Check /pricing for current quotas.

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Anthropic: Claude Fable 5$10.00/M in4120ms p50via OrcaRouter
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