Claude Opus 4.5

Text Generation
Anthropic · claude-opus-4-5-20251101
coding agentic reasoning

Most recent frontier Claude model with enhanced reasoning, extended thinking, and superior agentic performance

Context Window

200,000

tokens

Max Output

16,384

tokens

Input Pricing

$15.00

per million tokens

Output Pricing

$75.00

per million tokens

Core Capabilities

Vision Support
Function Calling
Streaming

Additional Capabilities

Agentic

Best-in-class agentic workflows and long-horizon planning

Function Calling

Tool use and function calling

Thinking Mode

Extended thinking for complex multi-step reasoning

Vision

Advanced image analysis and understanding

Benchmark Scores

Benchmark Score Ranking Date Scored Notes
LMSYS_Elo 1292.00 #1 November 05, 2025
MMLU 91.50 - November 01, 2025
SWE-bench_Verified 53.20 #1 November 01, 2025 New leader: extended thinking enables superior multi-step code reasoning
Released: November 01, 2025