Claude Fable 5.1 vs Claude Opus 5
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
Claude Fable 5.1
B
Claude Opus 5
- ProviderAnthropicAnthropic
- Rank#7Higher rank#8
- TierSS
- Score91.1Higher score88.0
- PriceAPI $10 input / $50 output per 1M tokens; Claude Pro and Max via usage credits, Team and EnterpriseAPI $5 input / $25 output per 1M tokens; listed as a legacy model in Claude plans
- TaglineAnthropic's Fable 5 point release, tied at the top of the Artificial Analysis Intelligence Index.Anthropic's previous-generation Opus model (July 2026), succeeded by Opus 5.5 in September 2026, with adaptive reasoning effort levels.
| Attribute | Claude Fable 5.1 | Claude Opus 5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Rank | #7Higher rank | #8 |
| Tier | S | S |
| Score | 91.1Higher score | 88.0 |
| Price | API $10 input / $50 output per 1M tokens; Claude Pro and Max via usage credits, Team and Enterprise | API $5 input / $25 output per 1M tokens; listed as a legacy model in Claude plans |
| Tagline | Anthropic's Fable 5 point release, tied at the top of the Artificial Analysis Intelligence Index. | Anthropic's previous-generation Opus model (July 2026), succeeded by Opus 5.5 in September 2026, with adaptive reasoning effort levels. |