ChatGPT vs Gemini vs Claude: Which Free AI Is Best? (Real Test, 2026)

Same prompts, free accounts, five rounds. Every answer below is what the AI actually replied on 12 October 2026.

Tested 12 October 2026 by Prompt Astra

How we tested

All three on their free plan, logged in, in a browser. Each prompt was sent once and we kept the first answer. AI answers change every time you ask, so treat this as a snapshot, not a law.

Round 1: explain a school topic

Photosynthesis ko aise samjhao jaise main 12 saal ka hoon. Sirf 5 lines mein.
AIWhat it did
ChatGPTExactly 5 lines, in Hindi (Devanagari), with emoji.
GeminiExactly 5 lines in simple Hinglish, with a "leaf is a kitchen" example.
ClaudeThe best explanation (leaf = kitchen, sunlight = phone charger, plus a one-line formula) but 7 lines instead of 5.

Round 2: a funny birthday roast

Mere dost Rahul ka aaj birthday hai. Usko ek funny Hinglish WhatsApp message likho, 3 lines ka, thoda roast bhi karna.
AIWhat it did
ChatGPT3 punchy lines. Best one: "Bhagwan tujhe akal, paisa aur thodi si shakal de."
GeminiOnly 2 lines.
Claude3 good lines, then offered to make it more personal if you share Rahul's habits.

Round 3: make a school poster

Ek poster image banao: school ke liye 'Paani Bachao' poster, colourful, bachchon ke liye.
ChatGPT
Paani Bachao poster made by ChatGPT

A detailed, colourful illustrated poster.

Gemini
Paani Bachao poster made by Gemini in Hindi script

Equally good, and the text is in Hindi script.

Claude
Paani Bachao poster designed by Claude

Claude does not generate images. It built an editable design in about 3 minutes.

Round 4: the twist (today's weather)

Aaj Delhi mein mausam kaisa hai? Source bhi batao.

Gemini and Claude both said sunny, about 28°C. ChatGPT said there had been heavy morning rain and waterlogging. All three gave sources, and still disagreed. Claude also said it could not name the underlying weather provider and pointed to the IMD website.

The lesson: for anything that matters (weather, prices, health, money), open the actual source yourself after the AI answers.

Round 5: how much do you get for free?

AIFree plan (from each company's own pages)
ChatGPTUnlimited text chat. Images, file uploads, voice and deep research are limited; OpenAI does not publish the numbers.
Gemini"Standard limits" that refresh every 5 hours, plus a weekly limit. Google does not publish the numbers.
ClaudeA usage limit that resets on a rolling 5-hour window. Anthropic does not publish an exact message count.

The verdict

If you want to…Use
Do everyday tasks and make imagesChatGPT
Make posters and photos with Hindi textGemini
Understand a topic properly, studyClaude

The real trick: all three are free. Keep all three and pick by the job.