Claude 3.5 Sonnet vs Claude Fable 5
Pricing verdict: Claude 3.5 Sonnet vs Claude Fable 5: Claude 3.5 Sonnet is cheaper for input-heavy usage ($3.00/M vs $10.00/M input tokens), while Claude Fable 5 is better for long-context tasks (1,000,000 tokens).
Direct answer: choose Claude 3.5 Sonnet for lower token spend and choose Claude Fable 5 when your workload needs longer context.
Compare API pricing, input and output token costs, context windows, and monthly estimates on one page so you can pick the right model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Claude 3.5 Sonnet
Claude Fable 5
Cost Differences
Claude Fable 5 costs more than Claude 3.5 Sonnet
Quick Recommendation
Winner for direct API pricing: Claude 3.5 Sonnet. At the default workload, Claude 3.5 Sonnet saves about $73.50/month ($894.25/year) versus Claude Fable 5.
Feature Comparison
| Feature | Claude 3.5 Sonnet | Claude Fable 5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input Price | $3.00/1M tokens | $10.00/1M tokens |
| Output Price | $15.00/1M tokens | $50.00/1M tokens |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Max Output | 8,192 tokens | 128,000 tokens |
| Category | balanced | flagship |
| Capabilities | textvisioncode | textvisionreasoningcode |
| Release Date | 10/22/2024 | 6/9/2026 |
Claude 3.5 Sonnet vs Claude Fable 5: Which Should You Choose?
Choosing between Claude 3.5 Sonnet and Claude Fable 5 depends on your priorities: cost efficiency, context length, or raw capability. Claude 3.5 Sonnet is the more affordable option at $3.00/1M input tokens — 70% cheaper than Claude Fable 5. Meanwhile, Claude Fable 5 offers a significantly larger context window at 1,000,000 tokens vs 200,000 for Claude 3.5 Sonnet.
These models target different tiers: Claude 3.5 Sonnet is a balanced model while Claude Fable 5 is flagship. This means they're optimized for different workloads. Claude Fable 5 targets more demanding workloads, while Claude 3.5 Sonnet provides a cost-effective option for everyday tasks.
Output costs matter too. Claude 3.5 Sonnet charges $15.00/1M output tokens vs $50.00 for Claude Fable 5. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Claude 3.5 Sonnet has the edge here at $15.00/1M output tokens.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose Claude 3.5 Sonnet when:
- • Budget is a primary concern
- • You're already using Anthropic's API ecosystem
Choose Claude Fable 5 when:
- • You need a larger context window (1,000,000 tokens)
- • You need more capabilities (reasoning)
- • You need longer outputs (up to 128,000 tokens)
- • You're already using Anthropic's API ecosystem
Pros and Caveats at a Glance
Claude 3.5 Sonnet
- • Input pricing: $3.00/M tokens
- • Output pricing: $15.00/M tokens
- • Context window: 200,000 tokens
- • Max output: 8,192 tokens
Watch out for
- • Smaller context window than Claude Fable 5
Claude Fable 5
- • Input pricing: $10.00/M tokens
- • Output pricing: $50.00/M tokens
- • Context window: 1,000,000 tokens
- • Max output: 128,000 tokens
Watch out for
- • Higher input cost than Claude 3.5 Sonnet
- • Higher output cost than Claude 3.5 Sonnet
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Claude 3.5 Sonnet (Anthropic)
Claude Fable 5 (Anthropic)
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Sign Up for Anthropic →Frequently Asked Questions
Which is cheaper, Claude 3.5 Sonnet or Claude Fable 5?▼
What is the context window difference between Claude 3.5 Sonnet and Claude Fable 5?▼
Which model is better for AI Chatbot?▼
Which model has better overall pricing for heavy usage?▼
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