ChatGPT
ChatGPT in 2026 runs on GPT-5.5, adds Memory Sources, and now offers a $8/month Go tier alongside Free, Plus, Pro, and Business plans.
About ChatGPT
What is ChatGPT (2026 update)
ChatGPT is a conversational AI chatbot and assistant built by OpenAI that handles chat, writing, coding, research, and image generation through a single interface at chatgpt.com. It is the most visited AI product in the world, and by September 2026 it has grown from a single chatbot into a family of plans covering free users, individual power users, and enterprise teams.
What is new in 2026
The model behind ChatGPT changed several times in 2026. GPT-5.1 launched as a warmer, more conversational update, with an Instant mode for quick answers and a Thinking mode for harder reasoning tasks. As of March 11, 2026, GPT-5.1 was retired from ChatGPT and existing conversations moved to newer models (GPT-5.3 Instant and GPT-5.4 Thinking or Pro). GPT-5.5 followed on April 24, 2026, described by OpenAI as its most capable ChatGPT model yet, with a reported 52.5% fewer hallucinations than GPT-5.3 Instant on high-stakes prompts. OpenAI also rolled out Memory Sources across all plans, which shows users exactly what context and past conversations are shaping a given answer. Separately, the Free tier moved to a model OpenAI calls GPT-5.6 (nicknamed Luna internally by some trackers) on August 6, 2026, and the week after, OpenAI removed the message cap on free text chats entirely.
Key features
- Two response modes on paid plans: a fast Instant mode and a slower Thinking mode for step-by-step reasoning
- Deep Research for multi-step web research reports, with a lightweight version for lower tiers
- Agent mode that can browse the web and complete multi-step tasks on a user’s behalf (Plus and above)
- Memory Sources, which lets users see and control what ChatGPT remembers about them
- Image generation and file/document analysis built into the chat window
- Custom GPTs and a GPT Store for task-specific assistants
Pricing in 2026
ChatGPT pricing spans four individual tiers plus two business tiers, from free to $200 a month.
| Plan | Price | What you get |
|---|---|---|
| Free | Free | Uncapped text chats since August 2026, runs on OpenAI’s free-tier model, limited image generation and no Agent mode or Deep Research |
| Go | $8/month | Higher message, upload, and image limits than Free, plus longer memory; no Agent mode, Deep Research, or top-tier model selection |
| Plus | $20/month | Full model access, Agent mode, Deep Research, image generation, and standard usage limits (also $240 billed annually) |
| Pro | $100 or $200/month | $100 gives roughly 5x Plus usage; $200 gives about 20x usage, the largest limits, roughly 250 Deep Research tasks, and priority compute |
| Business Standard | $20/seat (annual) or $25/seat (monthly) | Team workspace, admin controls, and higher usage than Plus per seat |
| Business Premium | $100/seat (annual) or $125/seat (monthly) | 5x more usage than Standard and removes the five-hour rolling usage limit |
| Enterprise | Custom, check the official site | Data residency, enterprise-grade security, custom retention policies, and 24/7 priority support |
Who should use it
ChatGPT fits casual users who want a free, general-purpose assistant, professionals who need Deep Research and Agent mode for daily work (Plus tier), and heavy users running long reasoning sessions or large research workloads who need Pro’s higher caps. Teams and companies that need shared billing, admin controls, or compliance features should look at Business or Enterprise instead of stacking individual Plus seats.
Limitations and alternatives
ChatGPT’s pricing structure changed multiple times in 2026 (new Go tier, renamed Business plans, retired GPT-5.1), so it is worth checking the official pricing page before buying, since tier names and limits can shift again. The free tier still lags paid tiers on model quality, Agent mode, and Deep Research access. For teams already inside Google Workspace, Gemini Advanced offers tighter integration with Docs, Sheets, and Gmail. For research-heavy use with more visible citations, Perplexity AI is a common alternative. For coding-focused and enterprise-safety-oriented use, Anthropic’s Claude is frequently compared against ChatGPT’s Plus and Pro tiers.
Frequently asked questions
How much does ChatGPT Plus cost in 2026?
ChatGPT Plus costs $20 per month, or $240 if billed annually, and includes Agent mode, Deep Research, and full model access.
What model does ChatGPT use in September 2026?
OpenAI has moved through several models in 2026, from GPT-5.1 to GPT-5.3, GPT-5.4, and GPT-5.5, with the free tier on a separate model OpenAI released in August 2026. Check the official OpenAI release notes for the exact current model.
Is ChatGPT free to use?
Yes, the Free tier no longer caps text chats as of August 2026, though it excludes Agent mode, Deep Research, and the top-tier models available on paid plans.
What is the difference between ChatGPT Pro and Plus?
Pro costs $100 or $200 per month and gives roughly 5x to 20x the usage limits of the $20 Plus plan, plus priority compute and a larger Deep Research allowance.
Information last verified: September 2026.
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