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Anthropic updates Claude Opus 5.5, advises new prompting strategies

By PulseAugur Editorial · [1 sources] ·

Anthropic has updated its default model to Claude Opus 5.5 for all paid users. The company has also released a new guide advising users to abandon older prompting techniques. The primary recommendation is to shift from "think hard" prompts to a "Medium effort" approach to optimize performance. AI

IMPACT Optimizes Claude Opus 5.5 performance by guiding users toward more effective prompting techniques.

RANK_REASON Frontier-lab model release with system card. [lever_c_demoted from frontier_release: ic=1 ai=1.0]

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AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Anthropic updates Claude Opus 5.5, advises new prompting strategies

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100 / 100
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Significant
Frontier-lab model release with system card. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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model release, product
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High
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COVERAGE [1]

  1. The Decoder TIER_1 English(EN) · Matthias Bastian ·

    Anthropic says outdated prompting habits are slowing down Claude Opus 5.5

    <p><img alt="" class="attachment-full size-full wp-post-image" height="1024" src="https://the-decoder.com/wp-content/uploads/2026/11/anthropic_claude_logo.png" style="height: auto; margin-bottom: 10px;" width="1536" /></p> <p> Anthropic has made Claude Opus 5.5 the default model …

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