Key Takeaways
Aion-1.0 wins:
- Cheaper input tokens
- Cheaper output tokens
GPT-5.2 Pro wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
- Has reasoning mode
Price Advantage
Aion-1.0
Benchmark Advantage
GPT-5.2 Pro
Context Window
GPT-5.2 Pro
Speed
GPT-5.2 Pro
Pricing Comparison
Price Comparison
| Metric | Aion-1.0 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $4.00 | $10.50 | Aion-1.0 |
| Output (per 1M tokens) | $8.00 | $84.00 | Aion-1.0 |
Using a 3:1 input/output ratio, Aion-1.0 is 83% cheaper overall.
Aion-1.0 Providers
No provider data available
GPT-5.2 Pro Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
0
Aion-1.0 Wins
0
GPT-5.2 Pro Wins
Benchmark Scores
| Benchmark | Aion-1.0 | GPT-5.2 Pro | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | - | 51.3 | - |
Coding Index Code generation & understanding | - | 48.7 | - |
Math Index Mathematical reasoning | - | 99.0 | - |
MMLU Pro Academic knowledge | - | 87.4 | - |
GPQA Graduate-level science | - | 90.3 | - |
LiveCodeBench Competitive programming | - | 88.9 | - |
GPT-5.2 Pro significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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Other models
Context & Performance
Context Window
Aion-1.0
131,072
tokens
GPT-5.2 Pro
400,000
tokens
GPT-5.2 Pro has a 67% larger context window.
Speed Performance
| Metric | Aion-1.0 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Tokens/second | N/A | 60.6 tok/s | |
| Time to First Token | N/A | 38.98s |
Capabilities
Feature Comparison
| Feature | Aion-1.0 | GPT-5.2 Pro |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Aion-1.0 | GPT-5.2 Pro |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Aion Labs | OpenAI |
| Released | Feb 2025 | Dec 2025 |
Aion-1.0 Modalities
Input
text
Output
text
GPT-5.2 Pro Modalities
Input
imagetextfile
Output
text