ChatGPT 免费吗？价格、免费额度与海外可用性

OpenAI 的旗舰对话产品，GPT 系列模型驱动，覆盖网页、App 与 API；支持联网搜索、图像理解、语音对话、自定义 GPTs 与数据分析等内置工具，是目前生态最完整的 AI 入口。

综合最全能：写方案、改代码、查资料都拿得出手。免费版高峰期会限流，重度使用建议 Plus；自定义 GPTs 适合把重复工作流固化下来。

OpenAI's flagship assistant, running the GPT-6 family across web, mobile, desktop and API. Beyond chat it covers web search, image understanding, voice conversation, file analysis, custom GPTs and agent-style task execution. The ecosystem is the deepest of any assistant — the widest range of third-party integrations, the most mature plugins and the largest body of community knowledge.

The safest default, and that is both its strength and its weakness.

Where it winsBreadth. Whatever you need — draft a document, debug code, analyse a spreadsheet, summarise a PDF, browse for current information — it handles it competently without switching tools. Custom GPTs are genuinely useful once you have a repeated workflow to encode.

Where to be carefulThe free tier throttles noticeably at peak times, and the price ladder is steep — Go, Plus, Pro at $100/$200/$500 all bill monthly with no annual discount. Only the top tier includes Priority Mode, which matters if you rely on it for work.

VerdictStart here if you want one tool that does everything adequately. If you have a narrow, heavy use case — say, coding all day — a specialist will beat it on both quality and cost.