ChatGPT vs Gemini vs Claude in 2026: Models, Prices and Key Differences

How do ChatGPT, Gemini and Claude differ?

ChatGPT (OpenAI), Gemini (Google) and Claude (Anthropic) are general-purpose AI assistants built on large language models. All three can chat, write, analyse files, search the web, write code and carry out multi-step tasks ^[2][5][8]. As of 3 November 2026 the practical differences are less about raw ability than about the surrounding product:

• ChatGPT is the most widely used: OpenAI says more than 1.2 billion people use it every week ^[1]. Since October 2026 it can answer with interactive elements such as charts, buttons and forms, a feature OpenAI calls Intelligent UI ^[1].
• Gemini is tied into Google's services. Paid plans add Gemini inside Gmail, Docs and other Google apps, more cloud storage and more Google Flow credits, and AI Pro and Ultra add higher limits in the Antigravity coding platform ^[5].
• Claude is aimed heavily at coding and long, complex work. Its current models support a context window of up to 1 million tokens ^[8][9], and paid plans include Claude Code and Claude in Chrome ^[8].

Each assistant also changes fast. OpenAI, Google and Anthropic each released new frontier models between September and October 2026 ^[4][6][10], so any comparison is a snapshot.

Which AI models power each assistant in November 2026?

ChatGPT

OpenAI introduced GPT-6 Astra on 3 September 2026, calling it 'the world's most intelligent and aligned model'; it rolled out first to a limited set of organisations and then to ChatGPT Plus, Pro, Business and Enterprise and the API ^[4]. On 7 October 2026 OpenAI began rolling out GPT-6 as the everyday Chat model, starting with paid tiers and expanding to Free and Go from the next day: GPT-6 Sol powers Plus, Pro, Business and Enterprise, while GPT-6 Luna powers Free and Go ^[1]. OpenAI's pricing page lists 'Pro reasoning powered by GPT-6 Astra' for Pro subscribers ^[2].

Gemini

Google released Gemini 4 Argon on 13 October 2026 as its 'latest frontier model', available to Google AI Pro and Ultra subscribers in the Gemini app ^[6]. Google's announcement says Argon ranked first on the Vals Index, a benchmark of work in finance, coding, legal and tax tasks ^[6]. A stronger model, Gemini 4 Carbon, was announced on 28 October 2026 but was being released first to a subset of cyber defenders, not yet to consumers ^[7]. Gemini's subscription page lists a Flash-Lite model for the free tier and a Flash model on Google AI Plus ^[5].

Claude

Anthropic's current lineup is Claude Fable 5.1, Opus 5.5, Sonnet 5.5 and Haiku 5.5 ^[9]. Opus 5.5 was released on 22 September 2026; Anthropic says it performs at the level of Fable 5.1 on most work and costs 40% less to run than Opus 5 ^[10]. Anthropic's documentation recommends starting with Opus 5.5 for most workloads and using Fable 5.1 for demanding reasoning and long agentic work ^[9].

How much do ChatGPT, Gemini and Claude cost?

All three offer a free tier and several paid tiers. The table below shows US prices listed on each company's own pages on 3 November 2026. Local prices, currencies and taxes vary by country, and companies change plans often, so check the official page before paying.

• ChatGPT: Free, Go, Plus at $20 a month ^[15], and Pro in three tiers at $100, $200 and $500 a month ^[3]. OpenAI bills Go in US dollars (local currency in some countries) and refers readers to the pricing page for its price, which varies by country ^[2][16].
• Gemini: Free, Google AI Plus at $4.99, Google AI Pro at $19.99, and Google AI Ultra at $99.99 or $199.99 a month depending on usage limits ^[5].
• Claude: Free, Pro at $20 a month ($17 a month billed annually), Max at $100 and Ultra at $200 a month ^[8]. Anthropic's prices exclude applicable tax ^[8].

Usage limits matter as much as headline price. Claude's plans are measured in usage per five hours and per week, with Max giving five times Pro's usage and Ultra ten times per week ^[8]. Google describes AI Pro as four times the free usage and Ultra as up to 20 times AI Pro ^[5]. OpenAI describes Free text chats as unlimited subject to abuse guardrails, with tighter limits on uploads, images and deep research ^[2].

Which is best for writing, coding and research?

There is no neutral, settled answer. Each company publishes benchmark results that favour its own model:

• OpenAI calls GPT-6 Astra 'the world's most intelligent and aligned model' and reports state-of-the-art results on computer use, browsing, software engineering and science ^[4].
• Google says Gemini 4 Argon outperforms other frontier models across domains and ranks first on the Vals Index ^[6], and that Gemini 4 Carbon ranks first on version 5.0 of the Artificial Analysis Intelligence Index with a score of 59 ^[7].
• Anthropic calls Claude Opus 5.5 'the new leading model' and cites a tester who completed a 680,000-line code migration in less than a day ^[10].

The claims conflict partly because each company chooses the tests, settings and competitors. Results also depend on settings such as how long a model is allowed to reason, which change both quality and cost, so headline numbers from different companies are rarely like-for-like ^[4][10]. Anthropic itself says that at current capability levels benchmark margins have become a less reliable guide to real-world differences ^[10].

What does each do especially well?

• Coding: all three have dedicated coding agents: Codex with ChatGPT ^[2], Antigravity with Gemini ^[5] and Claude Code with paid Claude plans ^[8].
• Research: ChatGPT and Gemini both offer deep research features ^[2][5], and Claude's paid plans include Research ^[8].
• Everyday Google users: Gemini works inside Gmail, Docs and other Google apps on paid plans ^[5].
• Long documents: Claude's current models accept up to 1 million tokens of context, depending on the model ^[8][9].

How do they handle your data and privacy?

The three companies treat consumer chats differently, and the defaults are worth checking.

• ChatGPT: OpenAI's pricing page states that content is used to train its models on Free, Go, Plus and Pro, with an opt-out available ^[2].
• Claude: Anthropic's plan comparison lists model training as 'Opt-out' on Free, Pro, Max and Ultra ^[8].
• Gemini: when the Keep Activity setting is on, Google uses your activity to provide, develop and improve its services, including training generative AI models, with help from human reviewers ^[11]. With Keep Activity off, or in temporary chats, chats are kept with the account for 72 hours, and temporary chats are not used for model training ^[11]. Chats reviewed by humans are kept for up to three years, disconnected from your account, even if you delete your activity ^[11].

These settings describe consumer accounts; business products have their own terms. Google, for example, says data in its Gemini Enterprise editions is not used to train Google models ^[5]. For work or school accounts, check with the administrator.

Are ChatGPT, Gemini and Claude available in Iran?

None of the three lists Iran as a supported location as of 3 November 2026.

• OpenAI's ChatGPT supported-countries list does not include Iran, and OpenAI warns that access from outside the list may lead to accounts being blocked or suspended ^[12].
• Anthropic's Supported Regions Policy (the version posted with an effective date of 12 November 2026) says its products, including Claude.ai and Claude Code, are available only in the countries and regions it lists; Iran is not among them ^[13].
• Google says the Gemini web app is available in over 230 countries and territories; its published list does not include Iran ^[14].

OpenAI explicitly warns that access from unlisted countries may lead to blocked or suspended accounts ^[12], and Anthropic treats any unlisted region as unsupported ^[13], so using these services from Iran carries a risk of losing access.

How should you choose between them?

1. Start with the free tiers. All three have one ^[2][5][8]. Run the same three or four real tasks from your work or study through each.
2. Match the ecosystem. If you live in Gmail and Google Docs, Gemini's integration is a practical advantage ^[5]. If you mainly code, compare Codex, Antigravity and Claude Code on your own projects ^[2][5][8].
3. Compare limits, not just prices. The $20 tiers differ in how much use, which models and which tools they include ^[2][5][8].
4. Check data settings before you upload anything sensitive, including training opt-outs and activity settings ^[2][8][11].
5. Verify important facts whatever you choose. Treat any assistant's answer as a draft to check, not a final source.

This is general information, not a purchasing recommendation; the best choice depends on your tasks, budget and data needs.

What is coming next?

Release cycles are now measured in weeks. OpenAI followed GPT-6 Astra on 3 September 2026 with GPT-6 Sol and Luna on 22 September and GPT-6.1 Sol on 29 September ^[4]. Google announced Gemini 4 Carbon two weeks after Argon and plans to bring it to developers, businesses and consumers after an initial limited release to cyber defenders ^[7]. Anthropic's lineup now runs from Fable 5.1 down to the fast, low-cost Haiku 5.5 ^[9].

The assistants are also adding agent features that work on tasks in the background: OpenAI's pricing page lists ChatGPT Work, Codex and an always-on agent called Dot ^[2], and Claude's paid plans include handing off and scheduling tasks ^[8]. Comparisons like this one will keep going out of date, so check each company's model and pricing pages for the current picture.