Key Takeaways
R1 wins:
- Cheaper input tokens
- Cheaper output tokens
- Has reasoning mode
GPT-5.2 Pro wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
- Supports vision
Price Advantage
R1
Benchmark Advantage
GPT-5.2 Pro
Context Window
GPT-5.2 Pro
Speed
GPT-5.2 Pro
Pricing Comparison
Price Comparison
| Metric | R1 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.70 | $21.00 | R1 |
| Output (per 1M tokens) | $2.50 | $168.00 | R1 |
Using a 3:1 input/output ratio, R1 is 98% cheaper overall.
R1 Providers
Vercel $0.55 (Cheapest)
Novita $0.70
Azure $1.49
Together $3.00
GPT-5.2 Pro Providers
OpenAI $21.00 (Cheapest)
Benchmark Comparison
8
Benchmarks Compared
0
R1 Wins
6
GPT-5.2 Pro Wins
Benchmark Scores
| Benchmark | R1 | GPT-5.2 Pro | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 18.8 | 51.2 | |
Coding Index Code generation & understanding | 15.9 | 48.7 | |
Math Index Mathematical reasoning | 68.0 | 99.0 | |
MMLU Pro Academic knowledge | 84.4 | 87.4 | |
GPQA Graduate-level science | 70.8 | 90.3 | |
LiveCodeBench Competitive programming | 61.7 | 88.9 | |
Aider Real-world code editing | 64.0 | - | - |
AIME Competition math | 68.3 | - | - |
GPT-5.2 Pro significantly outperforms in coding benchmarks.
Cost vs Quality
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Y-axis:
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R1
Other models
Context & Performance
Context Window
R1
64,000
tokens
Max output: 16,000 tokens
GPT-5.2 Pro
400,000
tokens
Max output: 128,000 tokens
GPT-5.2 Pro has a 84% larger context window.
Speed Performance
| Metric | R1 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 98.3 tok/s | |
| Time to First Token | 0.00s | 46.57s |
GPT-5.2 Pro responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | R1 | 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 | R1 | GPT-5.2 Pro |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Deepseek | OpenAI |
| Released | Jan 2025 | Dec 2025 |
R1 Modalities
Input
text
Output
text
GPT-5.2 Pro Modalities
Input
imagetextfile
Output
text