Claude Opus 5.5 vs Claude Fable 5.1
A side-by-side comparison of Claude Opus 5.5 and Claude Fable 5.1 — intelligence, context, capabilities, and price.
| Spec | ||
|---|---|---|
| Context window | 1M | 1M |
| Streaming | ||
| Reasoning | ||
| Tool use | ||
| Web search | ||
| Vision (image input) | ||
| Document input | ||
| Video | ||
| Audio |
Claude Opus 5.5 pricing
- Input$4.6 / 1M tokens
- Cached input$0.23 / 1M tokens
- 5m cache write$5.75 / 1M tokens
- 1h cache write$9.2 / 1M tokens
- Output$23 / 1M tokens
- Web search (when used)$11.5 / 1,000 searchs
List prices plus 15%. Higher reasoning can use more output tokens. TryAI charges a one-credit minimum and rounds each run's aggregate cost up once.
View Claude Opus 5.5details →Claude Fable 5.1 pricing
- Input$11.5 / 1M tokens
- Cached input$0.2875 / 1M tokens
- 5m cache write$14.375 / 1M tokens
- 1h cache write$23 / 1M tokens
- Output$57.5 / 1M tokens
- Web search (when used)$11.5 / 1,000 searchs
List prices plus 15%. Higher reasoning can use more output tokens. TryAI charges a one-credit minimum and rounds each run's aggregate cost up once.
View Claude Fable 5.1details →Claude Opus 5.5 vs Claude Fable 5.1: FAQ
- Is Claude Opus 5.5 better than Claude Fable 5.1?
- Anthropic's newest Opus for long-running agentic coding and knowledge work. $4/$20 per million tokens, with cache reads at $0.20/M. Vendor-reported Terminal-Bench 4.0 66.4% and GDPval-AA 1846 Elo at max effort. Anthropic's newest frontier model for coding, knowledge work, and long-horizon agentic runs. Beats both Fable 5 and Opus 5 on Terminal-Bench 4.0 (55.8%), CursorBench 3.2 (73.4%), and Humanity's Last Exam (65.0% with tools), at 75% cheaper cache reads than Fable 5. The best choice depends on your workload — compare context window, capabilities, and price above, or try both on TryAI.
- Which is cheaper, Claude Opus 5.5 or Claude Fable 5.1?
- See the pricing rows above for live per-token or per-generation costs. TryAI bills both from one pay-as-you-go balance.