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Model details

Claude Opus 4.5

Claude Opus 4.5 represents a significant step forward in what AI systems can accomplish, positioning itself as the most capable model for coding, agentic workflows, and computer use tasks. The model demonstrates state-of-the-art performance on real-world software engineering benchmarks, outperforming both its predecessor and alternative frontier models. Beyond technical tasks, it delivers meaningful improvements in everyday productivity—handling deep research, working with documents like slides and spreadsheets, and reasoning over large volumes of unstructured content. This combination of capabilities makes it particularly well-suited for enterprises looking to automate complex workflows that span data processing, document analysis, and decision support.

The model builds on a lineage of rapid iteration, arriving shortly after Claude Opus 4.1 and continuing the trajectory of capability improvements that Anthropic has established. In enterprise settings, it integrates directly into governed data environments—processing millions of rows, PDFs, and transcripts while writing results back to structured data systems. Organizations deploy it through workflows that chain together summarization, classification, and enrichment steps, or use it to build agents connected to databases and retrieval systems. The substantial price reduction from previous generations makes Opus-level intelligence accessible to a broader range of users and teams, while features like extended thinking mode provide options for handling more complex reasoning tasks when needed.

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Provider
OpenCode Zen
Model key
claude-opus-4-5
Release date
Nov 24, 2025
Last updated
Nov 24, 2025
Knowledge cutoff
2025-03-31
AI SDK package
@ai-sdk/anthropic
Input modalities
Output modalities
Capabilities

Cost

Input token cost
$5.00
Output token cost
$25.00

Limits

Output tokens
64,000 tokens
Context window
200,000 tokens

Transparent token rates

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Rates are shown per one million tokens. Combined means one million input plus one million output tokens.

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Latest news about Claude Opus 4.5

Azure Cognitive Services

CoverageBenchmark

A Vellum analysis of Anthropic's Claude Opus 4.5 system card reports the model scored 80.9% on SWE-bench Verified — surpassing GPT-5.1 and Gemini 3 Pro on real-world GitHub software issue resolution — and 37.6% on ARC-AGI-2, more than doubling GPT 5.1's abstract-reasoning result and beating Gemini 3 Pro by 6%. Vellum a For developers evaluating the exact Claude Opus 4.5 SKU relevant to Azure-hosted deployments, BenchLM's profile (data as of September 4, 2026) records an Anthropic-reported release in November 2025 with a 200K-token context window, $5 input and $25 output per million tokens, throughput of 47 tok/s, and a 1.36-second fi

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