Anthropic / SOURCE-LINKED MODEL RECORD

Claude Opus 4.5

A model record assembled from original source observations. Review the exact artifact and its evidence before choosing a deployment.

Hosted modelverifiedObserved Oct 13, 2026
Input types
text, image
Output types
text
Observed context window
200,000
Source release date
Nov 24, 2025

Know the exact model.

The canonical record is anthropic:claude-opus-4-5. Capabilities and context limits reflect source observations; the limits of a particular inference endpoint may differ.

Inclusion in the radar does not mean this model is served by Flonno. For the model currently available through our API, see Qwen3.8 Flash 27B and API pricing.

Artifact evidence

claude-opus-4-5-20251101

official api · Pinned artifact · API-key dependent. First observed Aug 9, 2026; last observed Oct 13, 2026.

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artificial-analysis:4077490a-bbfb-404e-979a-a97a20e3b5de

independent benchmark · Pinned artifact · Artificial Analysis evaluated configuration. First observed Aug 9, 2026; last observed Oct 13, 2026.

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claude-opus-4-5

official changelog · Mutable source entry · Official provider announcement. First observed Aug 9, 2026; last observed Oct 10, 2026.

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Evaluate it for your workflow.

Pin the artifact and inference configuration. Use representative inputs with a written answer rubric, then record accepted results, errors, complete request time and token usage. Keep output budgets and concurrency explicit.

Benchmark results apply to their recorded version and method. They do not transfer automatically to a different runtime or a quantized derivative.

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Benchmark provenance

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Source observations for exact artifacts. Scores from different benchmark versions or methods are not interchangeable.
BenchmarkReported resultProvenanceArtifact / date
Artificial Analysis Intelligence Indexv4.3 · reasoning23.7 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:4077490a-bbfb-404e-979a-a97a20e3b5deSep 9, 2026
Artificial Analysis Intelligence Indexv4.3 · reasoning27.8 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:4077490a-bbfb-404e-979a-a97a20e3b5deSep 8, 2026
Artificial Analysis Intelligence Indexv4.2 · reasoning27.8 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:4077490a-bbfb-404e-979a-a97a20e3b5deSep 5, 2026
Artificial Analysis Intelligence Indexv4.1 · reasoning35.6 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:4077490a-bbfb-404e-979a-a97a20e3b5deAug 9, 2026

Verified lifecycle updates

Source publication date
Anthropic / release

Anthropic Claude Opus 4 5 released

Anthropic hat Claude Opus 4.5 veröffentlicht. Das Modell bietet Verbesserungen in den Bereichen Vision, Coding und Computer-Nutzung für komplexe Aufgaben und Software-Engineering.

AI-assisted summary · gemma-4-31b-itRecorded Aug 9, 2026