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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. Claude Fable 5.1AnthropicRemove
  2. Claude Opus 4.5AnthropicRemove
claude-fable-5.1 vs claude-opus-4-5-20251101
AttributeClaude Fable 5.1claude-fable-5.1Claude Opus 4.5claude-opus-4-5-20251101
Pricing
Input$10.00 / 1M$4.00 / 1M
Output$50.00 / 1M$20.00 / 1M
Cache Write (5m)$12.50 / 1M$5.00 / 1M
Cache Write (1h)$20.00 / 1M$8.00 / 1M
Cache Read$1.00 / 1M$0.40 / 1M
Web Search$0 / 1M$0 / 1M
Context
Max context1M200K
Max outputN/AN/A
Capabilities
VisionYesYes
Function CallingYesYes
JSON ModeYesYes
StreamingYesYes
Catalogue
ProviderAnthropicAnthropic
Categorychatchat
Charge typePay As You GoPay As You Go
Released——
Description
SummaryClaude Fable 5.1 is an upgraded version of Fable 5, delivering broad improvements with particularly strong gains in agentic coding, long-running workflows, and professional knowledge work. It excels at large code refactors, front-end and visual code generation, financial analysis, and complex analytical tasks. Compared with Fable 5, it also produces more concise plans and summaries while maintaining strong performance across extended tasks, making it a natural upgrade for existing Fable workflows and a strong option alongside Opus 5 for reasoning-intensive applications.Claude Opus 4.5 is Anthropic's frontier reasoning model, built for complex engineering, agent workflows, and long computer-use tasks. It offers strong multimodal skills, better security against prompt injection, and flexible effort controls — including a Verbosity setting to trade speed vs. depth and token use. With advanced tool use, long-context handling, and support for coordinated multi-agent setups, it excels at research, debugging, multi-step planning, and UI/spreadsheet automation while improving reliability, alignment, and efficiency over earlier Opus versions.