Claude 3 Opus vs Claude Fable 5
Pricing verdict: Claude 3 Opus vs Claude Fable 5: Claude Fable 5 is cheaper for input-heavy usage ($10.00/M vs $15.00/M input tokens), while Claude Fable 5 is better for long-context tasks (1,000,000 tokens).
Direct answer: choose Claude Fable 5 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 Opus
Claude Fable 5
Cost Differences
Claude Fable 5 costs less than Claude 3 Opus
Quick Recommendation
Winner for direct API pricing: Claude Fable 5. At the default workload, Claude Fable 5 saves about $52.50/month ($638.75/year) versus Claude 3 Opus.
Feature Comparison
| Feature | Claude 3 Opus | Claude Fable 5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input Price | $15.00/1M tokens | $10.00/1M tokens |
| Output Price | $75.00/1M tokens | $50.00/1M tokens |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Max Output | 4,096 tokens | 128,000 tokens |
| Category | flagship | flagship |
| Capabilities | textvisionreasoning | textvisionreasoningcode |
| Release Date | 3/4/2024 | 6/9/2026 |
Claude 3 Opus vs Claude Fable 5: Which Should You Choose?
Choosing between Claude 3 Opus and Claude Fable 5 depends on your priorities: cost efficiency, context length, or raw capability. Claude Fable 5 is the more affordable option at $10.00/1M input tokens — 33% cheaper than Claude 3 Opus. Meanwhile, Claude Fable 5 offers a significantly larger context window at 1,000,000 tokens vs 200,000 for Claude 3 Opus.
Both models are in the flagship category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: Claude Fable 5 would save you roughly $5,250.00/month compared to Claude 3 Opus. For startups and indie developers, that difference can be significant.
Output costs matter too. Claude 3 Opus charges $75.00/1M 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 Fable 5 has the edge here at $50.00/1M 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 Opus when:
- • You're already using Anthropic's API ecosystem
Choose Claude Fable 5 when:
- • Budget is a primary concern
- • You need a larger context window (1,000,000 tokens)
- • You need more capabilities (code)
- • 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 Opus
- • Input pricing: $15.00/M tokens
- • Output pricing: $75.00/M tokens
- • Context window: 200,000 tokens
- • Max output: 4,096 tokens
Watch out for
- • Higher input cost than Claude Fable 5
- • Higher output cost than Claude Fable 5
- • 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
- • Trade-offs are minor in this matchup.
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Claude 3 Opus (Anthropic)
Claude Fable 5 (Anthropic)
Start using Claude 3 Opus today
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Sign Up for Anthropic →Frequently Asked Questions
Which is cheaper, Claude 3 Opus or Claude Fable 5?▼
What is the context window difference between Claude 3 Opus and Claude Fable 5?▼
Which model is better for AI Chatbot?▼
Which model has better overall pricing for heavy usage?▼
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