Model Alert... Everything you need to know about Claude Opus 4.5

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Claude Opus 4.5 is Anthropic's most advanced AI model, released in November 2025, excelling in coding, agentic workflows, computer use, and complex reasoning tasks.platform.claude+1​

Key Features

Claude Opus 4.5 supports an "effort" parameter to balance response thoroughness and token efficiency, unique among models. It includes enhanced computer use with a zoom action for inspecting screen details and automatic preservation of thinking blocks for multi-turn conversations. Context management automatically summarizes prior interactions to sustain long tasks without hitting limits.thepromptbuddy+3​

Performance Strengths

The model leads benchmarks in coding, scoring highest on SWE-bench Multilingual across most languages and outperforming humans on a 2-hour technical exam. It handles autonomous agents that self-improve, orchestrate multiple tools, and maintain focus over 30-minute sessions. Opus 4.5 shows robust safety, resisting prompt injections better than predecessors.youtube​anthropic+1​

Pricing and Availability

Priced at $5 input/$25 output per million tokens, it offers a 67% reduction from prior Opus models, available via API and platforms like Notion. This makes flagship capabilities more accessible for enterprises and developers.platform.claude+1​youtube​

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Introducing Claude Opus 4.5: the best model in the world for coding, agents, and computer use.

Opus 4.5 is a step forward in what AI systems can do, and a preview of larger changes to how work gets done.

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📊 Model Comparison Table

Columns

• Opus 4.5

• Sonnet 4.5

• Opus 4.1

• Gemini 3 Pro

• GPT-5.1

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Agentic Coding (SWE-Bench Verified)

• Opus 4.5: 80.9%

• Sonnet 4.5: 77.2%

• Opus 4.1: 74.5%

• Gemini 3 Pro: 76.2%

• GPT-5.1: 76.3% (Claude-Mix notation visible)

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Agentic Terminal Coding (Terminal-Bench 2.0)

• Opus 4.5: 59.3%

• Sonnet 4.5: 50.0%

• Opus 4.1: 46.5%

• Gemini 3 Pro: 54.2%

• GPT-5.1: 47.6% or 58.1% (image shows two values: one looks like Claude-Mix)

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Agentic Tool Use (12-Bench)

Retail

• Opus 4.5: 88.9%

• Sonnet 4.5: 86.2%

• Opus 4.1: 86.8%

• Gemini 3 Pro: 85.3%

• GPT-5.1: —

Telecom

• Opus 4.5: 98.2%

• Sonnet 4.5: 98.0%

• Opus 4.1: 71.5%

• Gemini 3 Pro: 98.0%

• GPT-5.1: —

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Scaled Tool Use (MCP Atlas)

• Opus 4.5: 62.3%

• Sonnet 4.5: 43.8%

• Opus 4.1: 40.9%

• Gemini 3 Pro: —

• GPT-5.1: —

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Computer Use (OSWorld)

• Opus 4.5: 66.3%

• Sonnet 4.5: 61.4%

• Opus 4.1: 44.4%

• Gemini 3 Pro: —

• GPT-5.1: —

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Novel Problem Solving (ARC-AGI-2 Verified)

• Opus 4.5: 37.6%

• Sonnet 4.5: 13.6%

• Opus 4.1: —

• Gemini 3 Pro: 31.1%

• GPT-5.1: 17.6%

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Graduate-Level Reasoning (GPQA Diamond)

• Opus 4.5: 87.0%

• Sonnet 4.5: 83.4%

• Opus 4.1: 81.0%

• Gemini 3 Pro: 91.9%

• GPT-5.1: 88.1%

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Visual Reasoning (MMMU – Validation)

• Opus 4.5: 80.7%

• Sonnet 4.5: 77.8%

• Opus 4.1: 77.1%

• Gemini 3 Pro: —

• GPT-5.1: 85.4%

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Multilingual Q&A (MMMU)

• Opus 4.5: 90.8%

• Sonnet 4.5: 89.1%

• Opus 4.1: 89.5%

• Gemini 3 Pro: 91.8%

• GPT-5.1: 91.0%

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Tags: Technology,Artificial Intelligence,Large Language Models,