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Claude Opus 4.5 is a further refinement of Anthropic's Opus flagship line, with improved coding, reasoning, and long-horizon agentic capabilities over Opus 4.1. It targets the most demanding professional software engineering and analysis tasks.
Document analysis#21Entertainment, Sports, & Media#25Writing, Literature, & Language#27Legal & Government#35
AuthorAnthropic
Country🇺🇸 United States
ReleasedNov 24, 2025
Overview
Cost rate
5x
Context
200K
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$5.00
Cached input$0.50
Output$25.00
Context
Context length200,000
Max output tokens64,000
Knowledge cutoff-
Performance
Throughput47 tok/s
Latency1.14s
Claude Haiku 4.5 is Anthropic's fast, affordable small model in the Claude 4 generation, balancing strong instruction-following and coding ability with low latency. It is designed for high-throughput agentic and chat applications where speed and cost efficiency are priorities.
Document analysis#37Software & IT Services#117Mathematical#121Writing, Literature, & Language#125
AuthorAnthropic
Country🇺🇸 United States
ReleasedOct 15, 2025
Overview
Cost rate
1x
Context
200K
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$1.00
Cached input$0.10
Output$5.00
Context
Context length200,000
Max output tokens64,000
Knowledge cutoff-
Performance
Throughput85 tok/s
Latency0.47s
Benchmarks
Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.
Intelligence
57.6
Claude Opus 5.5 (Max, Default Fallback)
Claude Opus 5.5 (Max, Default Fallback)56.0Claude Sonnet 5.5 (Max, Default Fallback)
Claude Sonnet 5.5 (Max, Default Fallback)53.4
