| Signal | Aion-2.0 | Delta | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|---|
Capabilities | 33 | -50 | |
Pricing | 2 | -10 | |
Context window size | 81 | -14 | |
Recency | 100 | -- | |
Output Capacity | 75 | -5 | |
| Overall Result | 0 wins | of 5 | 4 wins |
6
days higher
7
days
17
days higher
aion-labs
Aion-2.0 saves you $640.00/month
That's $7680.00/year compared to Gemini 3.1 Pro Preview Custom Tools at your current usage level of 100K calls/month.
| Metric | Aion-2.0 | Gemini 3.1 Pro Preview Custom Tools | Winner |
|---|---|---|---|
| Overall Score | 40 | 40 | -- |
| Rank | #140 | #138 | Gemini 3.1 Pro Preview Custom Tools |
| Quality Rank | #140 | #138 | Gemini 3.1 Pro Preview Custom Tools |
| Adoption Rank | #140 | #138 | Gemini 3.1 Pro Preview Custom Tools |
| Parameters | -- | -- | -- |
| Context Window | 131K | 1049K | Gemini 3.1 Pro Preview Custom Tools |
| Pricing | $0.80/$1.60/M | $2.00/$12.00/M | -- |
| Signal Scores | |||
| Capabilities | 33 | 83 | Gemini 3.1 Pro Preview Custom Tools |
| Pricing | 2 | 12 | Gemini 3.1 Pro Preview Custom Tools |
| Context window size | 81 | 96 | Gemini 3.1 Pro Preview Custom Tools |
| Recency | 100 | 100 | Aion-2.0 |
| Output Capacity | 75 | 80 | Gemini 3.1 Pro Preview Custom Tools |
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%). Here's what the scores mean for these two models:
Scores 40/100 (rank #140), placing it in the top 52% of all 290 models tracked.
Scores 40/100 (rank #138), placing it in the top 53% 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.
Aion-2.0 offers 83% better value per quality point. At 1M tokens/day, you'd spend $36.00/month with Aion-2.0 vs $210.00/month with Gemini 3.1 Pro Preview Custom Tools - a $174.00 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. Aion-2.0 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 ($1.60/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (40/100) 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
Aion-2.0 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.
Best for Quality
Aion-2.0
Marginally better benchmark scores; both are excellent
Best for Cost
Aion-2.0
83% lower pricing; better value at scale
Best for Reliability
Aion-2.0
Higher uptime and faster response speeds
Best for Prototyping
Aion-2.0
Stronger community support and better developer experience
Best for Production
Aion-2.0
Wider enterprise adoption and proven at scale
by aion-labs
| Capability | Aion-2.0 | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Callingdiffers | ||
| Streaming | ||
| JSON Modediffers | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
aion-labs
Aion-2.0 saves you $14.64/month
That's 81% 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 | Aion-2.0 | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|
| Context Window | 131K | 1.0M |
| Max Output Tokens | 32,768 | 65,536 |
| Open Source | No | No |
| Created | Feb 23, 2026 | Feb 25, 2026 |
Both Aion-2.0 and Gemini 3.1 Pro Preview Custom Tools score 40/100, making them extremely close competitors. Choose based on pricing, provider ecosystem, or specific capability requirements.
Aion-2.0 is ranked #140 and Gemini 3.1 Pro Preview Custom Tools is ranked #138 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.
Aion-2.0 is cheaper at $1.60/M output tokens vs Gemini 3.1 Pro Preview Custom Tools's $12.00/M output tokens - 7.5x more expensive. Input token pricing: Aion-2.0 at $0.80/M vs Gemini 3.1 Pro Preview Custom Tools at $2.00/M.
Gemini 3.1 Pro Preview Custom Tools has a larger context window of 1,048,576 tokens compared to Aion-2.0's 131,072 tokens. A larger context window means the model can process longer documents and conversations.