Model comparison
GPT-5.4 Pro vs Gemini 3 Deep Think
- Input
- $30.00
- Output
- $180.00
- Context
- 1.05M
- Released
- 2026-03-05
- Input
- Included with Google AI Ultra
- Output
- Included with Google AI Ultra
- Context
- 1M
- Released
- 2025-12-03
GPT-5.4 Pro scores higher on 2 of the 2 benchmarks both models report; GPT-5.4 Pro has the larger context window (1.05M vs 1M).
Specs and pricing side by side
| Spec | GPT-5.4 Pro | Gemini 3 Deep Think |
|---|---|---|
| Maker | OpenAI | |
| Released | 2026-03-05 | 2025-12-03 |
| Context window | 1.05M | 1M |
| Max output | 128K | 64K tokens |
| Input price | $30.00 | Included with Google AI Ultra |
| Output price | $180.00 | Included with Google AI Ultra |
| Parameters | not published | Undisclosed (sparse mixture-of-experts) |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text, Vision | Text, Vision, Audio, Video |
| Knowledge cutoff | August 31, 2025 | January 2025 |
Benchmarks both models report
| Benchmark | GPT-5.4 Pro | Gemini 3 Deep Think |
|---|---|---|
| GPQA Diamond | 94.4% | 93.8% |
| ARC-AGI-2 | 83.3% | 45.1% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick GPT-5.4 Pro if…
- You care about GPQA Diamond, ARC-AGI-2 (it scores higher on 2 shared benchmarks).
- You need the longer context (1.05M vs 1M).
- Your use case is: long-horizon professional deliverables: financial models, slide decks, and legal analysis.
Pick Gemini 3 Deep Think if…
- You need Audio / Video input, which GPT-5.4 Pro lacks.
- Your use case is: tackling competition-grade and research-level mathematics and proofs.
FAQ
Which is better, GPT-5.4 Pro or Gemini 3 Deep Think?
GPT-5.4 Pro scores higher on 2 of the 2 benchmarks both models report; GPT-5.4 Pro has the larger context window (1.05M vs 1M). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
What are the context windows of GPT-5.4 Pro and Gemini 3 Deep Think?
GPT-5.4 Pro offers 1.05M with up to 128K output; Gemini 3 Deep Think offers 1M with up to 64K tokens output.
Is GPT-5.4 Pro newer than Gemini 3 Deep Think?
GPT-5.4 Pro was released 2026-03-05; Gemini 3 Deep Think was released 2025-12-03.