Claude Fable 5 API pricing — what it really costs
Claude Fable 5 (Anthropic) costs $10 per 1M input tokens and $50 per 1M output tokens — with prompt caching, cached input drops to $1. Previous generation; Fable 5.1 costs the same with 4x cheaper cache reads. Prices verified 2026-10-17; we track the price you are actually billed today, including promotional rates.
Price per 1M tokens
| Input | Output | Cached input |
|---|---|---|
| $10 | $50 | $1 |
Real monthly costs on Claude Fable 5
Three realistic workloads, computed from the prices above (cached share billed at the cache-read rate where the provider offers one):
Customer-support chatbot
$34.20/mo
2M input + 0.5M output tokens/month, 60% of input served from prompt cache
RAG / document Q&A
$124/mo
20M input + 1M output tokens/month, 70% cached (shared context)
Agentic coding assistant
$390/mo
50M input + 5M output tokens/month, 80% cached (long sessions)
Want exact numbers for your usage? Open the calculator — same verified prices, your token volumes.
Compare Claude Fable 5
- Claude Fable 5 vs GPT-5.5 Pro — which is cheaper?
- Claude Fable 5 vs Claude Opus 4.8 — which is cheaper?
- Claude Fable 5 vs Claude Fable 5.1 — which is cheaper?
FAQ
How much does the Claude Fable 5 API cost?
Claude Fable 5 costs $10 per 1M input tokens and $50 per 1M output tokens. Cached input tokens cost $1 per 1M. Note: Previous generation; Fable 5.1 costs the same with 4x cheaper cache reads. Pricing verified 2026-10-17.
What does a typical workload cost on Claude Fable 5?
Customer-support chatbot: about $34.20/month (2M input + 0.5M output tokens/month, 60% of input served from prompt cache). RAG / document Q&A: about $124/month (20M input + 1M output tokens/month, 70% cached (shared context)). Agentic coding assistant: about $390/month (50M input + 5M output tokens/month, 80% cached (long sessions))
Is Claude Fable 5 expensive compared to other models?
Claude Fable 5 ranks #20 of 23 models by blended price in our comparison. The cheapest tracked models are Claude Haiku 5.5 and GPT-6 Luna at $0.100/$0.500 per 1M tokens.