Anthropic · 1M context
Claude Fable 5.1 API
Use Claude Fable 5.1 in the Synaps chat or through one OpenAI-compatible API key. Pay per message from a balance you top up with ETH or USDC. No subscription, no card.
Prices include the 20% Synaps fee and update automatically. “List” is what the provider charges.
Call Claude Fable 5.1 from code
Synaps speaks the OpenAI Chat Completions format. Point any OpenAI SDK at Synaps and set model to anthropic/claude-fable-5.1.
curl https://www.synaps.chat/api/v1/chat/completions \
-H "Authorization: Bearer $SYNAPS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-fable-5.1",
"messages": [{ "role": "user", "content": "Hello!" }]
}'from openai import OpenAI
client = OpenAI(base_url="https://www.synaps.chat/api/v1", api_key="syn_...")
reply = client.chat.completions.create(
model="anthropic/claude-fable-5.1",
messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)Privacy
This model's maker runs it and can read requests under its own policy. Synaps doesn't store your prompts.
Questions
How much does Claude Fable 5.1 cost on Synaps?
$12.00 per million input tokens and $60.00 per million output tokens, including the 20% Synaps fee. A typical chat message costs about $0.048. You only pay for what you use.
Can I pay for Claude Fable 5.1 with crypto?
Yes. Top up your Synaps balance with ETH on Robinhood Chain or Base, or USDC on Base, from $1. Each message is deducted from that balance. There is no subscription or card.
Is there a Claude Fable 5.1 API?
Yes. Create an API key on Synaps and call anthropic/claude-fable-5.1 through the OpenAI-compatible endpoint https://www.synaps.chat/api/v1/chat/completions. Any OpenAI SDK works by changing the base URL.
What can Claude Fable 5.1 do?
It accepts text, image, file and produces text, with a context window of 1M tokens. You can attach photos in the chat.