Aion 3.5 vs Solar Mini 4
| Signal | Aion 3.5 | Delta | Solar Mini 4 |
|---|---|---|---|
Capabilities | 67 | -- | |
Pricing | 94 | -6 | |
Context window size | 86 | -5 | |
Recency | 100 | -- | |
Output Capacity | 72 | -10 | |
| Overall Result | 0 wins | of 5 | 3 wins |
Score History Unavailable
Not enough historical data to show a comparison chart. Score history is recorded weekly and will be available after at least two data points are collected.
40
Aion 3.5
40
Solar Mini 4
Aion 3.5
aion-labs
Solar Mini 4
Upstage
Solar Mini 4 saves you $585.00/month
That's $7020.00/year compared to Aion 3.5 at your current usage level of 100K calls/month.
| Metric | Aion 3.5 | Solar Mini 4 | Winner |
|---|---|---|---|
| Overall Score | 40 | 40 | -- |
| Rank | #237 | #238 | Aion 3.5 |
| Quality Rank | #237 | #238 | Aion 3.5 |
| Adoption Rank | #237 | #238 | Aion 3.5 |
| Parameters | -- | -- | -- |
| Context Window | 262K | 524K | Solar Mini 4 |
| Pricing | $3.00/$6.00/M | $0.05/$0.20/M | -- |
| Signal Scores | |||
| Capabilities | 67 | 67 | Aion 3.5 |
| Pricing | 94 | 100 | Solar Mini 4 |
| Context window size | 86 | 91 | Solar Mini 4 |
| Recency | 100 | 100 | Aion 3.5 |
| Output Capacity | 72 | 82 | Solar Mini 4 |
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 40/100 (rank #237), placing it in the top 19% of all 290 models tracked.
Scores 40/100 (rank #238), placing it in the top 18% 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 Aion 3.5 when you need:
- Step-by-step reasoning and chain-of-thought problem solving
Choose Solar Mini 4 when you need:
- High-volume production workloads where API costs must be minimized
- Processing long documents or large codebases (524K token context)
- Step-by-step reasoning and chain-of-thought problem solving
Solar Mini 4 offers 97% better value per quality point. At 1M tokens/day, you'd spend $3.75/month with Solar Mini 4 vs $135.00/month with Aion 3.5 - a $131.25 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
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. Solar Mini 4 also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (524K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.20/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
Aion 3.5 and Solar Mini 4 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
Aion 3.5
Marginally better benchmark scores; both are excellent
Best for Cost
Solar Mini 4
97% lower pricing; better value at scale
Best for Reliability
Aion 3.5
Higher uptime and faster response speeds
Best for Prototyping
Aion 3.5
Stronger community support and better developer experience
Best for Production
Aion 3.5
Wider enterprise adoption and proven at scale
by aion-labs
- Choose for Quality - Marginally better benchmark scores; both are excellent
- 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 | Aion 3.5 | Solar Mini 4 |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Aion 3.5
aion-labs
Solar Mini 4
Upstage
Solar Mini 4 saves you $12.27/month
That's 97% cheaper than Aion 3.5 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 3.5 | Solar Mini 4 |
|---|---|---|
| Context Window | 262K | 524K |
| Max Output Tokens | 32,768 | 131,072 |
| Open Source | No | No |
| Created | Sep 23, 2026 | Sep 23, 2026 |