Input
- Official Anthropic
- $10
- Here (−50%)
- $5
claude-fable-5
Claude Fable 5 API — price per token
Claude Fable 5 is Anthropic's Mythos-class model — a tier above Opus for the longest-horizon agentic work, at double the Opus token price.
Pricing per 1M tokens
| Rate | Official Anthropic | Here (−50%) |
|---|---|---|
| Input | $10 | $5 |
| Output | $50 | $25 |
| Cache read | $1 | $0.5 |
| Cache write (5m) | $12.5 | $6.25 |
Output
- Official Anthropic
- $50
- Here (−50%)
- $25
Cache read
- Official Anthropic
- $1
- Here (−50%)
- $0.5
Cache write (5m)
- Official Anthropic
- $12.5
- Here (−50%)
- $6.25
Every request is metered at the official rate first, then the flat 50% B2C discount is subtracted before it touches your prepaid balance. Context window: 1M tokens. Max output: 128K tokens.
Best for
- The longest-horizon autonomous runs where failure costs more than tokens.
- The hardest software tasks — it leads SWE-bench Pro.
- An orchestrator or advisor role reviewing and steering cheaper models.
Good to know
- Mythos class sits above Opus: $10/$50 vs the Opus $5/$25 tariff. Fable 5.1 is the current GA at the same input/output price with $0.25 cache reads.
- Safety classifiers may reroute sensitive requests to Opus.
- Adaptive thinking is the recommended mode; thinking tokens bill as output.
How to use Claude Fable 5
Create a free account, generate one key, and point any Anthropic-compatible tool at https://router.apitoken.sale with model ID claude-fable-5. Eligible new accounts include $5 of platform bonus credit — enough to test the model before topping up. Existing integrations on the legacy host https://api.apitoken.sale keep working.
Frequently asked questions
How much does the Claude Fable 5 API cost?
Officially $10 per 1M input tokens and $50 per 1M output tokens — double the Opus tariff. On apiToken.sale the flat 50% discount applies to every call: $5/$25.
What is the model ID for Claude Fable 5?
claude-fable-5. Use it unchanged with the Anthropic SDK, Claude Code, Cursor or any compatible tool pointed at https://router.apitoken.sale. New work should send claude-fable-5-1.
Fable 5 or Fable 5.1?
Same $10/$50 input/output tariff. Fable 5.1 is the current GA, always-on adaptive thinking, and cache reads at $0.25 instead of $1. Keep Fable 5 only when a toolchain is pinned to it.
Run Claude Fable 5 on the same Anthropic API at a flat 50% off — instant key, prepaid balance, card or crypto.