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Anthropic / SOURCE-LINKED MODEL RECORD

Claude Opus 4.8

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
1,000,000
Source release date
May 28, 2026

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The canonical record is anthropic:claude-opus-4-8. 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-4-8

official api · Mutable source entry · API-key dependent. First observed Aug 9, 2026; last observed Oct 13, 2026.

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artificial-analysis:992b7b84-5069-4c6a-9295-834252553d50

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

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claude-opus-4-8

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 Coding Indexv4.3 · coding74.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 20, 2026
Artificial Analysis Coding Indexv4.3 · coding74.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 20, 2026
Artificial Analysis Intelligence Indexv4.3 · reasoning41.8 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 20, 2026
Artificial Analysis Intelligence Indexv4.3 · reasoning41.8 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 20, 2026
Artificial Analysis Intelligence Indexv4.3 · reasoning42 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 15, 2026
Artificial Analysis Coding Indexv4.3 · coding74.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 15, 2026
Artificial Analysis Coding Indexv4.3 · coding74.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 9, 2026
Artificial Analysis Intelligence Indexv4.3 · reasoning42 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 9, 2026
Artificial Analysis Coding Indexv4.3 · coding74.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 8, 2026
Artificial Analysis Intelligence Indexv4.3 · reasoning47.8 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 8, 2026
Artificial Analysis Intelligence Indexv4.2 · reasoning47.8 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 7, 2026
Artificial Analysis Coding Indexv4.2 · coding74.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 7, 2026
Artificial Analysis Intelligence Indexv4.2 · reasoning46.4 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 5, 2026
Artificial Analysis Coding Indexv4.2 · coding74.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Sep 5, 2026
Artificial Analysis Coding Indexv4.1 · coding74.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Aug 9, 2026
Artificial Analysis Intelligence Indexv4.1 · reasoning57.3 index_pointsSource record verifiedArtificial Analysis ↗independent benchmarkartificial-analysis:992b7b84-5069-4c6a-9295-834252553d50Aug 9, 2026

Verified lifecycle updates

Source publication date
Anthropic / release

Anthropic Claude Opus 4 8 released

Anthropic released Claude Opus 4.8, which supports a 1M token context window and 128k max output tokens across major cloud platforms. The model retains the same tools and platform features as its predecessor, Claude Opus 4.7.

AI-assisted summary · qwen3.8-27bRecorded Oct 10, 2026
verifiedOriginal source ↗