Claude Fable 5
by Anthropic
Anthropic's generally available Mythos-class model for long-running agentic workflows, code execution, memory, vision, and complex tool use.
Input Price
$10
per 1M tokens
Output Price
$50
per 1M tokens
Context Window
1,000K
tokens (128K max output)
Specifications
Capabilities
Related Use Cases
AI Agent / Agentic Workflows
Calculate the cost of running AI agents that use tools, make decisions, and complete multi-step tasks.
AI Chatbot
Calculate the API cost of running a customer support or conversational AI chatbot.
Document Summarizer
Calculate how much it costs to summarize documents, reports, and articles with AI.
AI Code Assistant
Calculate the cost of building an AI-powered coding assistant or copilot.
Content Generation
Calculate the cost of generating blog posts, marketing copy, and articles with AI.
Image Analysis
Calculate the cost of analyzing images with AI vision models.
Monthly Cost Estimates
| Usage Level | Daily Tokens | Daily | Monthly | Yearly |
|---|---|---|---|---|
| Light~50 requests/day | 100K in / 20K out | $2.00 | $60.00 | $730 |
| Medium~200 requests/day | 500K in / 100K out | $10.00 | $300.00 | $3650 |
| Heavy~1K requests/day | 2,000K in / 500K out | $45.00 | $1350.00 | $16425 |
| Enterprise~5K requests/day | 10,000K in / 2,000K out | $200.00 | $6000.00 | $73000 |
Cost Calculator
Alternatives to Claude Fable 5
💰 Cheaper Options
Frequently Asked Questions
How much does Claude Fable 5 API cost per million tokens?▼
What is the Claude Fable 5 context window?▼
How much does Claude Fable 5 cost per month?▼
Is there a cheaper alternative to Claude Fable 5?▼
Is Claude Fable 5 good for ai agent / agentic workflows?▼
Claude Fable 5 Comparisons
Ready to use Claude Fable 5?
Get started with Anthropic's API — free tier available for most models.
Related Articles
Claude Code Session Hygiene: How to Get Better Agent Output With Less Token Waste
Anthropic's Claude Code session guidance turns context hygiene into a practical advantage for long-running coding age...
8/15/2026
What Claude Code Shows About Useful Coding Agents: 7 Workflows to Build Now
Claude Code shows why coding agents are now credible: repo context, terminal execution, test loops, workflows, costs,...
8/10/2026
Anthropic’s Context Engineering Guide: How to Build Leaner Claude 5 Agents After the 80% Prompt Cut
Anthropic says Claude Code now uses 80% less system prompt. See what changed, why it matters, and 7 lean agent patter...
7/26/2026