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Claude Fable 5 vs Claude Opus 4.8 — Premium vs Flagship Anthropic Pricing
Opus 4.8 is 50% cheaper than Fable 5 with the same 1M context. Is the premium worth it for technical tasks? Compare Anthropic's premium and flagship models.
Pricing data verified: Jun 28, 2026
All Premium Models Compared
The premium AI models from major providers, ranked by input price.
| Model | Provider | Tier | Input (per 1M) | Output (per 1M) | Context |
|---|---|---|---|---|---|
| Claude Opus 4.8 | Anthropic | Premium | $5.00 | $25.00 | 1M |
| GPT-5.5 | OpenAI | Premium | $5.00 | $30.00 | 1.05M |
| Claude Fable 5 | Anthropic | Premium | $10.00 | $50.00 | 1M |
| Claude Mythos 5 | Anthropic | Premium | $10.00 | $50.00 | 1M |
| Gemini 3.1 Pro | Mid | $2.00 | $12.00 | 1M |
Calculate Your Exact Costs
Opus 4.8 is 50% cheaper — see how much you save for your specific usage.
Which Should You Choose?
Structured Reasoning
Complex logical chains, multi-step problem solving, systematic analysis.
General-Purpose AI
Chatbots, Q&A, summarization, general tasks across your product.
Code Generation
Writing code, debugging, architecture decisions, code review.
Cost-Sensitive Scaling
High-volume API usage where per-token cost matters at scale.
Technical Documentation
API docs, user guides, architecture docs, runbooks.
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Frequently Asked Questions
Is Claude Opus 4.8 cheaper than Claude Fable 5?
Yes. Claude Opus 4.8 costs $5.00 input and $25.00 output per 1M tokens, while Claude Fable 5 costs $10.00 input and $50.00 output per 1M tokens. Opus 4.8 is exactly 50% cheaper across the board. Both have 1M token context windows.
What's the difference between Claude Fable 5 and Claude Opus 4.8?
Claude Fable 5 is a premium-tier model focused on structured reasoning, technical tasks, and systematic problem-solving. Claude Opus 4.8 is the general-purpose flagship model. Opus 4.8 costs half as much ($5/$25 vs $10/$50) with the same 1M context window. Choose Fable 5 for specialized technical work, Opus 4.8 for cost-effective general use.
Is Claude Fable 5 worth the extra cost over Opus 4.8?
It depends on your workload. Fable 5 costs double Opus 4.8 but excels at structured reasoning, code generation, and technical documentation. If your tasks benefit from Fable 5's specialized strengths, the premium may be justified. For general-purpose AI tasks, Opus 4.8 at half the price is hard to beat.
Which is better for coding: Claude Fable 5 or Opus 4.8?
Claude Fable 5 is specifically optimized for structured reasoning and technical tasks, making it strong at code generation, debugging, and architecture decisions. Opus 4.8 is also very capable at coding as a general-purpose flagship model. Fable 5 may edge out for complex technical work, but Opus 4.8 offers excellent coding at half the price.
Both Claude Fable 5 and Opus 4.8 have 1M context — is there a difference?
Both models offer 1M token context windows, so context capacity is identical. The differences are in pricing ($5/$25 vs $10/$50) and specialized capabilities. Fable 5's premium pricing reflects its focus on structured and technical reasoning. Opus 4.8 provides the same context at half the cost for general-purpose use.
How much can I save using Opus 4.8 instead of Fable 5?
Since Opus 4.8 is exactly 50% cheaper than Fable 5 on both input and output, you save 50% on every API call. For example, at 10M input tokens and 5M output tokens per month, you'd spend $350 on Fable 5 vs $175 on Opus 4.8 — saving $175/month.
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