ChatGPT vs Claude vs Gemini Comparison

At-a-Glance Comparison

Feature	ChatGPT (5.5)	Claude (Fable 5/Opus 4.8)	Gemini (3.5 Flash/3.1 Pro)
Developer	OpenAI	Anthropic	Google DeepMind
Free Tier	ChatGPT 5.5 mini (limited)	Sonnet (limited)	Flash (generous)
Paid Price	$20/month (Plus)	$20/month (Pro)	$20/month (Google AI Pro)
Context Window	128K tokens	200K tokens	1M tokens
File Upload	Yes — docs, images, code	Yes — docs, images, code	Yes — docs, images, video, audio
Image Generation	Yes (ChatGPT Images 2.0)	No (text only)	Yes (Nano Banana Pro)
Web Search	Yes (built-in)	Yes (built-in)	Yes (Google Search)
Code Execution	Yes (Code Interpreter)	Yes (Artifacts / Analysis)	Yes (code execution)
API Available	Yes	Yes	Yes

Note (13 June 2026): Anthropic has disabled Fable 5 (and Mythos 5) for all users to comply with a US government export-control directive restricting foreign-national access. Opus 4.8 is currently the top accessible Claude model; the table reflects Fable 5's specs for reference. Update (24 June 2026): Fable 5 and Mythos 5 remain offline for all users — the “coming days” return has not happened. The clearest path back is Anthropic’s identity-verification policy taking effect 8 July 2026, which would let it confirm US citizenship and restore Fable 5 to domestic users. Until then, use Opus 4.8.

When to Use Each Model

Choose ChatGPT When...

You need an all-in-one tool — text, images, code, web search, and data analysis in a single conversation
You want image generation integrated into your workflow (ChatGPT Images 2.0 generates images natively)
You're building with the API and need the most mature plugin and function-calling ecosystem
You need voice interaction (Advanced Voice mode)
Your team is already embedded in the OpenAI ecosystem (Microsoft 365 Copilot)

Choose Claude When...

You're working with long documents — Claude's 200K context window handles entire reports, contracts, and codebases
You need nuanced, careful writing that follows detailed instructions precisely
You value safety and thoughtful refusals over eager compliance
You're doing complex analysis that requires careful reasoning and step-by-step thinking
You want clean, well-structured outputs with consistent formatting
You need computer use or agentic coding capabilities

Choose Gemini When...

You're working with very large files — Gemini's 1M token window is unmatched
You need to analyse video or audio content natively
You're deep in the Google ecosystem (Docs, Sheets, Gmail, Drive)
You want the most generous free tier for experimentation
You need real-time information with tight Google Search integration

Task-by-Task Recommendations

Task	Best Model	Why
Long document analysis (50+ pages)	Claude / Gemini	Largest context windows; Claude excels at precise extraction
Creative writing & copywriting	Claude	Most nuanced prose; best at following style and tone instructions
Code generation & debugging	ChatGPT / Claude	Both excellent; ChatGPT has Code Interpreter; Claude has Artifacts
Data analysis & visualisation	ChatGPT	Code Interpreter executes Python and generates charts in-conversation
Image generation	ChatGPT	Native ChatGPT Images 2.0 generation; iterative editing in conversation
Email drafting & comms	Claude	Best at matching professional tone and following specific formatting requests
Research with citations	Gemini	Tight Google Search integration provides source links inline
Video/audio analysis	Gemini	Only model with native multimodal video and audio understanding
Legal/compliance review	Claude	Strongest at careful, nuanced analysis with appropriate caveats
Brainstorming & ideation	Any — try all three	Each model has different creative tendencies; compare outputs for the richest ideas

The real answer: The best model depends on your task, not brand loyalty. Power users keep accounts with at least two services and route tasks to the model best suited for each job. Think of them as specialists, not competitors.

Quick Decision Framework

What's the task? Match it to the table above.
How much context? Short task → any model. Long document → Claude or Gemini.
Need images or multimedia? ChatGPT for image generation. Gemini for video/audio analysis.
What ecosystem are you in? Microsoft → ChatGPT/Copilot. Google → Gemini. Platform-agnostic → Claude.
Still unsure? Run the same prompt through two models and compare outputs. The quality difference on your specific task is what matters.