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SemiAnalysis posted on X on October 23, 2026, confirming that Anthropic is quietly running an A/B gray test on Claude subscription quotas in the background. It used two identical $200 Max 20x accounts to run Opus 5.5 Agent workloads and found that one account's 5-hour window quota was 2.076 billion tokens, 19% higher than the other account's 1.74 billion tokens, but the weekly total quota dropped from 6.579 billion tokens to 5.266 billion tokens, a 20% shrinkage. Claude Code technical staff member Lydia Hallie said the quotas were not adjusted and advised users to run the feedback command to submit their IDs for investigation; core developer Boris Cherny said the team is urgently investigating.
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SemiAnalysis's hands-on testing claims Anthropic is running an A/B gray test on Claude subscription quotasDevelopments
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Oct 23
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SemiAnalysis's hands-on testing claims Anthropic is running an A/B gray test on Claude subscription quotas
SemiAnalysis ran an Opus 5.5 agent workload on two identical $200 Max 20x accounts and found that one account's 5-hour window quota was 2.076 billion tokens, 19% higher than the other account's 1.74 billion tokens, but the weekly total quota fell from 6.579 billion tokens to 5.266 billion tokens, a 20% shrinkage. Claude Code technical staff member Lydia Hallie said the quotas were not adjusted and suggested users run the feedback command to submit their ID for investigation; core developer Boris Cherny said the team is urgently investigating. The article also mentions that OpenAI previously halved the quota of its $200 Pro plan and introduced a $500 tier, as well as DeepSeek's open-source inference framework DeepInfer and its deployment practice of 155 trillion tokens per day of throughput on a single cluster.
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SemiAnalysis testing found that Claude subscription quotas were lowered by a backend A/B test
SemiAnalysis ran an Opus 5.5 agent workload on two identical $200 Max 20x accounts and found that the gray-test account's total weekly quota dropped from 6.579 billion tokens to 5.266 billion tokens, a shrinkage of about 20%, while the 5-hour window quota rose from 1.74 billion tokens to 2.076 billion tokens. Claude Code technical staff member Lydia Hallie responded that quotas had not been adjusted, and core developer Boris Cherny said the team is investigating. The article also mentioned that OpenAI previously halved the quota of its $200 Pro plan and introduced a new $500 tier, as well as the engineering practice of DeepSeek's open-source inference framework DeepInfer, with a single cluster's daily throughput of 155 trillion tokens.
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