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Model details

Claude Opus 4.8 (US)

Claude Opus 4.8 (US) sits at the top of Anthropic's Opus family and is distributed through Amazon Bedrock as a managed, serverless foundation model, giving enterprises a hosted route to the latest flagship-tier reasoning system without self-hosting. The variant is multimodal on the input side, accepting text, images, and PDF documents alongside plain text prompts, and emits text-only completions, which makes it well suited to mixed-document analysis, long-context reasoning over visual material, and structured assistant workflows that combine natural-language instructions with file attachments. Practical deployments can lean on attachments, explicit reasoning behavior, and tool calling to build retrieval-augmented agents, document Q&A pipelines, and code or research assistants that need to invoke external services. For teams evaluating fit, the model is positioned for demanding reasoning and agentic tasks where deep multi-step planning, careful instruction following, and the ability to ground answers in user-supplied documents matter more than raw throughput. The combination of very large context capacity, vision and PDF understanding, and first-class tool use lets a single model handle complex pipelines such as long-document summarization, codebase exploration, and orchestrated workflows that call APIs or query data stores. Because it is served through Bedrock, it inherits the platform's identity, governance, and scaling features, making it a natural choice for organizations that already standardize on AWS and want a flagship-tier reasoning model behind their existing security and procurement controls.

As a member of the Claude Opus lineage, Claude Opus 4.8 continues the family's emphasis on advanced reasoning, careful response behavior, and strong general-purpose performance, while the US regional deployment on Bedrock is aimed at customers who need in-region data residency. The model's blend of long-context understanding, multimodal comprehension, and tool-aware reasoning makes it most useful for scenarios such as research synthesis over large document sets, multi-turn analytical assistance, and production agent systems where reliability and grounded outputs are essential. Teams should weigh the Opus-tier pricing against the value of its reasoning depth and multimodal coverage when choosing between it and smaller, faster Claude variants for latency-sensitive or high-volume workloads.

Amazon Bedrockus.anthropic.claude-opus-4-8claude-opus

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Provider
Amazon Bedrock
Model key
us.anthropic.claude-opus-4-8
Release date
May 28, 2026
Last updated
May 28, 2026
Knowledge cutoff
2026-01
Input modalities
Output modalities
Capabilities

Cost

Input token cost
$5.50
Output token cost
$27.50

Limits

Output tokens
128,000 tokens
Context window
1,000,000 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 4.8 (US)

Amazon Bedrock

CoverageBenchmark

A third-party benchmark recap reports that Anthropic's Claude Opus 4.8 took the No. 1 spot on the Artificial Analysis Intelligence Index on May 28, 2026, posting a composite score of 61.4 — edging out GPT-5.5, which had been leading at 60.2 in its highest-effort "xhigh" reasoning configuration. The Intelligence Index a By June 1, 2026, Claude Opus 4.8 also retook first place on Artificial Analysis's GDPval-AA benchmark for real-world economic tasks, recording an Elo rating of 1,890 — 121 points clear of GPT-5.5 in second place. The article further reports a 1,580 Elo score on the LMSYS Arena leaderboard in July 2026, framing the mode

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