ChatGPT (web and app, GPT-5.5)

The default chat product, now powered by GPT-5.5 Instant as of April 2026 with GPT-5.5 Thinking as the reasoning variant. It has memory across conversations, file upload, image input, web browsing, and integrates Sora video, image generation, voice, and the agent tools in one interface. The interface has consolidated; Canvas was retired in GPT-5.5 in favour of inline writing and code blocks.

• GPT-5.5 Instant default model with materially better STEM, web search, and conciseness
• Persistent memory across chats with manual override and project-scoped memory
• Projects (workspaces with shared files and instructions, similar to Claude Projects)
• Native multimodal input including PDFs, images, audio, and screen sharing
• Inline writing blocks and code blocks replacing the separate Canvas surface

• Daily drafting of emails, proposals, and Telegram-style short copy in one tab
• Photographing a contractor quote and asking for a clean comparison table
• Translating site documents between English, Polish, and Romanian on a phone
• Writing first-draft job adverts and interview questions for ops roles
• Quick UK regulation lookups with the built-in browse tool

Long-context comprehension is still behind Claude past 80K tokens; independent testing puts Claude five to six points ahead on long-document retrieval. Memory occasionally pollutes unrelated chats. The Pro 1M-token context is real but the model gets lazy on dense source packs. Hallucinations on UK-specific regulation are more common than Perplexity.

Free tier with GPT-5.3 Instant and a 10-message-per-5-hours cap. Go GBP 8 per month, Plus GBP 20 per month with GPT-5.5, Pro GBP 100 per month (5x limits) or GBP 200 per month (20x limits, 1M-token context). Team GBP 25 per user per month annual. Enterprise from circa GBP 60 per user per month with a 150-seat floor.