Gemini 3.1 Pro Preview vs Gemini 3.1 Pro Preview Custom Tools
| Signal | Gemini 3.1 Pro Preview | Delta | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|---|
Capabilities | 100 | -- | |
Benchmarks | 92 | -- | |
Pricing | 88 | -- | |
Context window size | 86 | -- | |
Recency | 100 | -- | |
Output Capacity | 80 | -- | |
| Overall Result | 0 wins | of 6 | 0 wins |
Score History
91.7
current score
Tied
right now
91.7
current score
Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview Custom Tools
| Metric | Gemini 3.1 Pro Preview | Gemini 3.1 Pro Preview Custom Tools | Winner |
|---|---|---|---|
| Overall Score | 92 | 92 | -- |
| Rank | #8 | #7 | Gemini 3.1 Pro Preview Custom Tools |
| Quality Rank | #8 | #7 | Gemini 3.1 Pro Preview Custom Tools |
| Adoption Rank | #8 | #7 | Gemini 3.1 Pro Preview Custom Tools |
| Parameters | -- | -- | -- |
| Context Window | 1049K | 1049K | Gemini 3.1 Pro Preview Custom Tools |
| Pricing | $2.00/$12.00/M | $2.00/$12.00/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 100 | Gemini 3.1 Pro Preview |
| Benchmarks | 92 | 92 | Gemini 3.1 Pro Preview |
| Pricing | 88 | 88 | Gemini 3.1 Pro Preview |
| Context window size | 86 | 86 | Gemini 3.1 Pro Preview |
| Recency | 100 | 100 | Gemini 3.1 Pro Preview |
| Output Capacity | 80 | 80 | Gemini 3.1 Pro Preview |
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 92/100 (rank #8), placing it in the top 98% of all 290 models tracked.
Scores 92/100 (rank #7), placing it in the top 98% of all 290 models tracked.
With only a 0-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.
Choose Gemini 3.1 Pro Preview when you need:
- Step-by-step reasoning and chain-of-thought problem solving
Choose Gemini 3.1 Pro Preview Custom Tools when you need:
- Step-by-step reasoning and chain-of-thought problem solving
Both models are priced similarly, so the decision comes down to quality and features rather than cost.
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
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Gemini 3.1 Pro Preview 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 ($12.00/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (92/100) 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 and Gemini 3.1 Pro Preview Custom Tools are extremely close in overall performance (only 0 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
By Use Case
Best for Quality
Gemini 3.1 Pro Preview
Marginally better benchmark scores; both are excellent
Best for Cost
Gemini 3.1 Pro Preview
0% lower pricing; better value at scale
Best for Reliability
Gemini 3.1 Pro Preview
Higher uptime and faster response speeds
Best for Prototyping
Gemini 3.1 Pro Preview
Stronger community support and better developer experience
Best for Production
Gemini 3.1 Pro Preview
Wider enterprise adoption and proven at scale
by Google
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Cost - 0% lower pricing; better value at scale
- Choose for Reliability - Higher uptime and faster response speeds
- Choose for Prototyping - Stronger community support and better developer experience
- Choose for Production - Wider enterprise adoption and proven at scale
| Capability | Gemini 3.1 Pro Preview | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview Custom Tools
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Gemini 3.1 Pro Preview | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|
| Context Window | 1.0M | 1.0M |
| Max Output Tokens | 65,536 | 65,536 |
| Open Source | No | No |
| Created | Feb 19, 2026 | Feb 25, 2026 |