FrontierAnthropic
Claude Opus 4.8
Context
1M tokens
Pricing
$5/M input, $25/M output
Modalities
text, image, code
Released
May 2026
- Overview
- Anthropic's current Opus-tier model, released May 2026. Claude Opus 4.8 targets long-horizon agentic work — complex refactors, knowledge work, and autonomous runs — with a 1M token context window and adaptive thinking.
- Why it matters
- Opus 4.8 is the model Anthropic points enterprises at for the hardest production work: long autonomous coding runs, multi-document knowledge tasks, and agent loops that execute for minutes without correction. Two shifts matter for buyers. First, pricing: at $5/M input it costs a third of what Opus 4 charged a year earlier, continuing the pattern of top-tier capability getting cheaper each generation. Second, the API surface changed — sampling parameters and fixed thinking budgets are gone in favor of adaptive thinking and an effort dial, so migrating from older Opus versions is a code change, not just a model-ID swap.
Key strengths
- State-of-the-art long-horizon agentic execution
- 1M token context window at standard pricing
- Adaptive thinking with tunable effort levels
- High-resolution vision for documents and screenshots
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