ChatGPT vs Gemini: Complete Comparison 2026

GPT-5.4 and Gemini 3.1 Pro both score 57 on the Artificial Analysis Intelligence Index. For the first time, these two models are genuinely tied. So the question isn't which is better anymore. It's which one fits what you actually do.

ChatGPT vs Gemini: what's different in 2026

OpenAI and Google are building for different users. GPT-5.4 (released March 5, 2026) is the first model that can operate a desktop better than most humans, scoring 75% on OSWorld against a 72.4% human baseline. It has a 1M token context window, 32K output, and makes 33% fewer errors than GPT-5.2.

Gemini 3.1 Pro (released February 19, 2026) went hard on reasoning. It scores 77.1% on ARC-AGI-2 where GPT-5.4 gets 73.3%, and 94.3% on GPQA Diamond vs 92.8%. It also processes video and audio natively, which GPT-5.4 still can't do. Same 1M context, but with 65K output tokens instead of 32K.

Coding performance

GPT-5.4 gets 71.7% on SWE-bench Verified. Gemini sits at 63.8%. On HumanEval, it's 96.2% vs 94.5%. GPT-5.4 also has computer use, which means it can open your IDE, run commands, and debug across applications. Gemini can't.

That said, Gemini's 65K output ceiling is double GPT-5.4's 32K. If you need to generate a lot of code in one go, or you want to feed an entire repo into the context window, Gemini has a practical edge there.

Multimodal and context window

Gemini 3.1 Pro is the only frontier model that handles text, images, audio, and video natively in one model. GPT-5.4 does text and images. No native video, no native audio.

Both support 1M tokens of context. But Gemini can take in 8.4 hours of audio, a 900-page PDF, or a full hour of video in a single prompt. With 65K output tokens, it also produces longer responses.

Pricing

Consumer plans are nearly identical: ChatGPT Plus is $20/mo, Gemini Advanced is $19.99/mo. The real gap is in API pricing. Gemini charges $2.00/$12.00 per 1M tokens. GPT-5.4 charges $2.50/$15.00. That's about 20% more for OpenAI.

Gemini's free tier is also more generous than ChatGPT's.

Which one should you pick

Coding: GPT-5.4. Computer use, higher SWE-bench, IDE integration.

Research: Gemini 3.1 Pro. Better reasoning scores, native video/audio, processes entire papers.

Desktop automation: GPT-5.4. Nothing else can operate desktop software this well.

Budget: Gemini 3.1 Pro. Cheaper API, better free tier, Google Workspace included.

Overall: It's a tie. The Intelligence Index is 57 for both. Pick based on your workflow, not on marketing.

What changed recently

• March 5, 2026: OpenAI released GPT-5.4 with computer use that beats human baselines.
• March 11, 2026: OpenAI retired GPT-5.1. All users moved to GPT-5.3/5.4.
• February 19, 2026: Google released Gemini 3.1 Pro with 2x reasoning improvement.
• ARC-AGI-2: Gemini leads at 77.1% vs GPT-5.4's 73.3%.

We'll update this when the next models drop.