SemiAnalysis 测订阅额度：Anthropic 同价可用量约为 GPT 五倍
按 API 价格折算，Anthropic 订阅在 agent 任务上可用量约为 OpenAI 五倍；Astra 与 Fable 5.1 旗舰额度接近，500 美元档只比 200 美元档多 21% Astra。
CLAUDE DELIVERS 5X THE PERFORMANCE OF GPT FOR THE SAME MONEY SemiAnalysis tested how much work actually fits into AI subscriptions. They separately loaded input tokens, model outputs and cache while tracking how fast the limits drained Converted to API prices, Anthropic came out with roughly 5x more usable volume on agentic tasks Back in June the same analysts saw the opposite picture: ChatGPT Pro beat Claude Max by almost 2x The biggest gap right now is between Opus 5.5 and GPT-6.1 Sol. For the flagships, Fable 5.1 and GPT-6 Astra, the limits are almost even OpenAI's new $500 plan gives only 21% more Astra than the old $200 one On the other hand, Codex has no five-hour windows. Anthropic does, and a big allowance has to be used up between them The researchers also spotted a hidden A/B test. Usage rates can differ between Claude users, and this was never announced publicly So in terms of work volume, Anthropic's subscription is clearly the better deal right now. But how much a specific account actually gets is anyone's guess
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