Claude Fable 5
ChatNot available
Anthropic's most advanced frontier model for the most demanding reasoning, coding, and agentic tasks.
- Context
- 1Mtokens
- Max output
- 128Ktokens
- Latency
- ~22ms
- Released
- 2026-06
Pricing
$ / 1M tokensInput
$10.00/M
Output
$50.00/M
Cache Read
$1.00/M
Write (5m)
$12.50/M
Write (1h)
$20.00/M
Capabilities
7 listed- Chat
- Tool Use
- Reasoning
- Vision
- Coding
- Analysis
- Long Context
Code examples
POST /v1/chat/completionspython
from openai import OpenAI
client = OpenAI(
api_key="your_api_key",
base_url="https://api.modelstack.cc/v1",
)
response = client.chat.completions.create(
model="claude-fable-5",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)Related models
Frequently asked questions
How is Claude Fable 5 billed on ModelStack?expand_more
ModelStack bills based on actual request usage. Input, output, cache, and any other applicable rates follow the live pricing table on this page. Final request costs are available in the console.
What are the context window and maximum output for Claude Fable 5?expand_more
Claude Fable 5 has a 1M context window and supports up to 128K of output.
How can I call Claude Fable 5 through ModelStack?expand_more
Use the model ID `claude-fable-5` with any OpenAI-compatible SDK pointed at the ModelStack API — see the code examples above for Python, Node.js, and cURL.
Which capabilities does Claude Fable 5 support?expand_more
Claude Fable 5 supports: Chat, Tool Use, Reasoning, Vision, Coding, Analysis, Long Context.