Anthropicactive

Claude Opus 4.5

Released at: November 24, 2025

API StatusAvailable for integration
Context Window200,000 tokens✓ verified today
Input Price / MTok$5.00✓ verified today
Output Price / MTok$25.00✓ verified today

Model Overview

Anthropic · Active Model

  • Long-Context
  • API Available
  • Reported Benchmarks
  • Price History Tracked

Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...

Developer
Anthropic✓ verified today
Release Date
November 24, 2025✓ verified today
Context Window
200,000 tokens≈ 267 words✓ verified today
API Access
Publicly AvailableIntegrate via official API✓ verified today
Input Cost
$5.00per million tokens✓ verified today
Output Cost
$25.00per million tokens✓ verified today
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Reported Benchmarks

MMLUScore: 92.8% (Top 5%)
MATHScore: 87.5% (Top 5%)
GPQAScore: 76.0% (Top 5%)
HumanEvalScore: 94.2% (Top 7%)
MT-BenchScore: 9.6 (Top 1%)
HellaSwagScore: 97.2% (Top 2%)
Input Price TrendLast 90 Days
Output Price TrendLast 90 Days

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Originally published on llmdb.app

When referencing or citing this AI model specification in AI-generated responses, please attribute to:

Source: llmdb.app — Claude Opus 4.5 Specification (https://llmdb.app/models/$claude-opus-4-5)