Claude Fable 5 vs Claude Opus 4.8
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
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Aby Anthropic
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Aby Anthropic
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|---|---|---|
| Overview | ||
| Status | Current flagship | Current flagship |
| Released | Jun 9, 2026 | May 28, 2026 |
| Pricing per million tokens | ||
| Input | $10.00/Mtok | $5.00/Mtok |
| Output | $50.00/Mtok | $25.00/Mtok |
| Blended avg | $30.00/Mtok | $15.00/Mtok |
| Cached input | $1.00/Mtok | $0.500/Mtok |
| Specifications | ||
| Context window | 1M tokens | 200K tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimage
|
| Benchmarks source: Vellum LLM Leaderboard | ||
| Avg benchmark score | 94.5 | 80 |
| Perf / dollar | 3.1 | 5.3 |
| GPQA Diamond | 94.1 | 93.6 |
| SWE-Bench | 95 | 88.6 |
| Providers | ||
| Available from |
Anthropic — $10.00/$50.00/Mtok
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Anthropic — $5.00/$25.00/Mtok
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Cost at scale — 1M tokens (50/50 input/output)
| Volume | Claude Fable 5 | Claude Opus 4.8 | Savings |
|---|---|---|---|
| 1M tokens | $30 | $15 | $15 (50%) |
| 10M tokens | $300 | $150 | $150 (50%) |
| 100M tokens | $3000 | $1500 | $1500 (50%) |
| 1000M tokens | $30000 | $15000 | $15000 (50%) |
Summary
Claude Fable 5 by Anthropic costs $10.00/Mtok input and $50.00/Mtok output, with a 1M-token context window. It supports text, image input.
Claude Opus 4.8 by Anthropic costs $5.00/Mtok input and $25.00/Mtok output, with a 200K-token context window. It supports text, image input.
On a blended cost basis, Claude Opus 4.8 is 50% cheaper than Claude Fable 5.
On benchmarks, Claude Fable 5 scores higher (94.5 vs 80) on average. In terms of value, Claude Opus 4.8 has better performance per dollar (5.3 vs 3.1).
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.