Claude Fable 5.2

Available

anthropic/claude-fable-5.2

Anthropic's most capable model for long, agentic work and web and frontend design. Adaptive thinking is always on.

Chat
1M context
128K max output
Vision
Tools

Try in Playground Compare

Pricing

Input: $8 / 1M tokens
Output: $40 / 1M tokens
Cached input: $0.20 / 1M tokens

What it costs

A typical request: 2,000 tokens in, 500 out$0.036

1,000 of those requests$36.00

Performance on SparrowCodes

Measured from real requests over the last 7 days.

Throughput: 18333 tok/s
First token: 1.04 s
Latency: 1.05 s
Success rate: 100.0%

Medians across 3 requests.

Official benchmarks

Scores published by the model's maker, under their test conditions.

The maker hasn't published benchmark scores we could verify for this model.

Specifications

Type: Chat
Served by: Anthropic
Context window: 1,000,000 tokens
Maximum output: 128,000 tokens
Input types: Text, Image
Tool calling: Supported

Use it

curl https://api.sparrowcodes.com/v1/chat/completions \
  -H "Authorization: Bearer $SPARROW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-fable-5.2",
    "messages": [{"role": "user", "content": "Explain rate limiting in one paragraph."}]
  }'

Set "model" to anthropic/claude-fable-5.2. The response includes its exact cost.

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