Claude Fable 5
Pricing & Specs

Anthropic · $10 input / $50 output per 1M tokens · 1M context window

$10
per 1M input tokens
$50
per 1M output tokens
1M
context window (tokens)

The per-token price never tells the full story. A typical task (1K input + 500 output tokens) on Claude Fable 5 costs about $0.0350 — roughly $35.00 per 1,000 runs. But if it needs 3x the tokens of a cheaper model to match quality on YOUR task, the economics flip. The only way to know is to benchmark it on your actual workload.

Claude Fable 5 API Pricing

TokensPrice
Input$10 / 1M tokens
Output$50 / 1M tokens
Cached input$1 / 1M tokens

50% discount available for batch API requests. Cache writes: $12.50/MTok (5min), $20/MTok (1hr). Cache hits & refreshes: $1/MTok.

What that means in practice

1x One typical task (1K input + 500 output tokens): $0.0350
1K 1,000 runs of that task: $35.00
💡 Real cost depends on how verbose the model is on YOUR prompts — benchmark to measure actual tokens, not estimates.

Claude Fable 5 Specs

SpecValue
Context window1M tokens
Max output tokens128K tokens
Input modalitiestext, image
Output modalitiestext
Reasoning modelYes
Tool / function callingYes
JSON modeYes
StreamingYes
Prompt cachingYes
Batch APIYes

FAQ

How much does Claude Fable 5 cost?

Claude Fable 5 costs $10 per 1M input tokens and $50 per 1M output tokens ($1 per 1M cached input tokens).

What is Claude Fable 5's context window?

Claude Fable 5 has a 1M-token context window. Maximum output is 128K tokens.

Can I test Claude Fable 5 on my own task?

Yes. OpenMark lets you benchmark Claude Fable 5 against 100+ models on your own task with real API calls — no API keys needed, free tier available.

Is Claude Fable 5 the right model for YOUR task?

Pricing tables can't answer that. Benchmark it against 100+ models
on your actual workload — real API calls, real costs. Free tier available.

Benchmark Claude Fable 5 — Free →