| Signal | Gemini 3.1 Pro Preview Custom Tools | Delta | o4 Mini |
|---|---|---|---|
Capabilities | 83 | -17 | |
Benchmarks | 79 | -5 | |
Pricing | 88 | -8 | |
Context window size | 96 | +11 | |
Recency | 100 | +32 | |
Output Capacity | 80 | -3 | |
| Overall Result | 2 wins | of 6 | 4 wins |
Score History
80.2
current score
o4 Mini
right now
81.4
current score
OpenAI
o4 Mini saves you $470.00/month
That's $5640.00/year compared to Gemini 3.1 Pro Preview Custom Tools at your current usage level of 100K calls/month.
| Metric | Gemini 3.1 Pro Preview Custom Tools | o4 Mini | Winner |
|---|---|---|---|
| Overall Score | 80 | 81 | o4 Mini |
| Rank | #34 | #32 | o4 Mini |
| Quality Rank | #34 | #32 | o4 Mini |
| Adoption Rank | #34 | #32 | o4 Mini |
| Parameters | -- | -- | -- |
| Context Window | 1049K | 200K | Gemini 3.1 Pro Preview Custom Tools |
| Pricing | $2.00/$12.00/M | $1.10/$4.40/M | -- |
| Signal Scores | |||
| Capabilities | 83 | 100 | o4 Mini |
| Benchmarks | 79 | 85 | o4 Mini |
| Pricing | 88 | 96 | o4 Mini |
| Context window size | 96 | 84 | Gemini 3.1 Pro Preview Custom Tools |
| Recency | 100 | 68 | Gemini 3.1 Pro Preview Custom Tools |
| Output Capacity | 80 | 83 | o4 Mini |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 80/100 (rank #34), placing it in the top 89% of all 290 models tracked.
Scores 81/100 (rank #32), placing it in the top 89% of all 290 models tracked.
With only a 1-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
o4 Mini offers 61% better value per quality point. At 1M tokens/day, you'd spend $82.50/month with o4 Mini vs $210.00/month with Gemini 3.1 Pro Preview Custom Tools - a $127.50 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Higher benchmark score (0/100) indicates stronger performance on coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Faster response time (speed score 0/100) is critical for user-facing chat. o4 Mini also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1049K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($4.40/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (81/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Gemini 3.1 Pro Preview Custom Tools and o4 Mini are extremely close in overall performance (only 1.2000000000000028 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
Best for Quality
Gemini 3.1 Pro Preview Custom Tools
Marginally better benchmark scores; both are excellent
Best for Cost
o4 Mini
61% lower pricing; better value at scale
Best for Reliability
Gemini 3.1 Pro Preview Custom Tools
Higher uptime and faster response speeds
Best for Prototyping
Gemini 3.1 Pro Preview Custom Tools
Stronger community support and better developer experience
Best for Production
Gemini 3.1 Pro Preview Custom Tools
Wider enterprise adoption and proven at scale
by Google
| Capability | Gemini 3.1 Pro Preview Custom Tools | o4 Mini |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
OpenAI
o4 Mini saves you $10.74/month
That's 60% cheaper than Gemini 3.1 Pro Preview Custom Tools at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Gemini 3.1 Pro Preview Custom Tools | o4 Mini |
|---|---|---|
| Context Window | 1.0M | 200K |
| Max Output Tokens | 65,536 | 100,000 |
| Open Source | No | No |
| Created | Feb 25, 2026 | Apr 16, 2025 |
o4 Mini scores 81/100 (rank #32) compared to Gemini 3.1 Pro Preview Custom Tools's 80/100 (rank #34), giving it a 1-point advantage. o4 Mini is the stronger overall choice, though Gemini 3.1 Pro Preview Custom Tools may excel in specific areas like certain benchmarks.
Gemini 3.1 Pro Preview Custom Tools is ranked #34 and o4 Mini is ranked #32 out of 290+ AI models. Rankings use a composite score combining benchmark performance (90%) from MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations, with capabilities and context window as tiebreakers (10%). Scores update hourly.
o4 Mini is cheaper at $4.40/M output tokens vs Gemini 3.1 Pro Preview Custom Tools's $12.00/M output tokens - 2.7x more expensive. Input token pricing: Gemini 3.1 Pro Preview Custom Tools at $2.00/M vs o4 Mini at $1.10/M.
Gemini 3.1 Pro Preview Custom Tools has a larger context window of 1,048,576 tokens compared to o4 Mini's 200,000 tokens. A larger context window means the model can process longer documents and conversations.