Looking for an honest Google Gemini 1.5 Pro vs OpenAI o4-mini comparison in 2026? We scored both ai language models on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. Both products score nearly identically (70/100 vs 71/100) — this is a genuine toss-up that hinges on which specs matter most for your use case. The widest gap is in battery life, where the Google Gemini 1.5 Pro pulls noticeably ahead.
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Google Gemini 1.5 Pro and OpenAI o4-mini are closely matched ai language models devices with nearly identical overall scores (70 vs 71). The best choice depends on which specific features matter most to you.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
Lower cost = better value. Free = open-source self-hosted.
| Metric | 1.5 Pro | OpenAI o4-mini |
|---|---|---|
| Input (Prompt) | $1.25/1M | ✓$1.10/1M |
| Output (Completion) | $5.00/1M | ✓$4.40/1M |
| Open Source | Proprietary | Proprietary |
Context Window (tokens)
| Metric | 1.5 Pro | OpenAI o4-mini |
|---|---|---|
| Max Output | 8,192 tok | ✓100,000 tok |
| Speed | ✓110 tok/s | 100 tok/s |
| Time to First Token | ✓700ms | 2.0s |
| Languages | 40+ | ✓50+ |
Higher is better. Industry-standard AI evaluation benchmarks.
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| Feature | 1.5 Pro | OpenAI o4-mini |
|---|---|---|
| Reasoning / Chain-of-Thought | ✕ | ✓ |
| Vision (Image Input) | ✓ | ✓ |
| Audio Input | ✓ | ✕ |
| Video Input | ✓ | ✕ |
| Image/Audio Output | ✕ | ✕ |
| Function Calling / Tools | ✓ | ✓ |
| JSON Mode | ✓ | ✓ |
| Real-time Web Access | ✕ | ✕ |
| Fine-tuning Support | ✕ | ✕ |
| Batch API | ✓ | ✓ |
| Streaming | ✓ | ✓ |
| Open Source | ✕ | ✕ |
| Field | 1.5 Pro | OpenAI o4-mini |
|---|---|---|
| Provider | OpenAI | |
| Knowledge Cutoff | 2023-11 | 2025-01 |
| Best For | long contextdocument analysisvideogeneral | reasoningcodingmathvisioncost efficiency |
Buy Google Gemini 1.5 Pro if…
The Google Gemini 1.5 Pro is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy OpenAI o4-mini if…
The OpenAI o4-mini is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Google Gemini 1.5 Pro and OpenAI o4-mini are closely matched ai language models devices with nearly identical overall scores (70 vs 71). The best choice depends on which specific features matter most to you.
Both products score similarly — it depends on your priorities.
Check the latest prices using the buy links above.
The Google Gemini 1.5 Pro is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
The OpenAI o4-mini is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Reviewed by VersusMatrix Editorial Team
Last updated: April 25, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.
Scores are relative within the ai language modelscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.