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Anthropic's Claude 4.8 model exhibits token-burning, repetitive output issues

Users are reporting that Anthropic's Claude 4.8 model is exhibiting unusual behavior, specifically by repeatedly outputting repetitive and nonsensical text like "Hello Worlds" and "Test123". This issue appears to be causing the model to consume an excessive amount of tokens without providing useful responses. The problem has led to user frustration and questions about the model's performance and efficiency. AI

IMPACT Potential performance degradation in a widely used AI model, impacting user experience and efficiency.

RANK_REASON User reports of a specific model version exhibiting problematic behavior.

Read on r/ClaudeAI →

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

Anthropic's Claude 4.8 model exhibits token-burning, repetitive output issues

COVERAGE [1]

  1. r/ClaudeAI TIER_2 English(EN) · /u/tken3 ·

    Opus 4.8 burns tokens, it constantly Echo's "Hello Worlds", "Test123" and other useless echo's

    <table> <tr><td> <a href="https://www.reddit.com/r/ClaudeAI/comments/1tsoy0w/opus_48_burns_tokens_it_constantly_echos_hello/"> <img alt="Opus 4.8 burns tokens, it constantly Echo's &quot;Hello Worlds&quot;, &quot;Test123&quot; and other useless echo's" src="https://preview.redd.i…