Key Takeaways
GPT-5.1 wins:
- Cheaper input tokens
- Cheaper output tokens
- Faster response time
GPT-5.2 Pro wins:
- Higher intelligence benchmark
- Better at coding
- Better at math
Price Advantage
GPT-5.1
Benchmark Advantage
GPT-5.2 Pro
Context Window
GPT-5.2 Pro
Speed
GPT-5.1
Pricing Comparison
Price Comparison
| Metric | GPT-5.1 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $1.25 | $10.50 | GPT-5.1 |
| Output (per 1M tokens) | $10.00 | $84.00 | GPT-5.1 |
| Cache Read (per 1M) | $0.13 | N/A | GPT-5.1 |
Using a 3:1 input/output ratio, GPT-5.1 is 88% cheaper overall.
GPT-5.1 Providers
No provider data available
GPT-5.2 Pro Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
0
GPT-5.1 Wins
6
GPT-5.2 Pro Wins
Benchmark Scores
| Benchmark | GPT-5.1 | GPT-5.2 Pro | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 27.4 | 51.3 | |
Coding Index Code generation & understanding | 27.3 | 48.7 | |
Math Index Mathematical reasoning | 38.0 | 99.0 | |
MMLU Pro Academic knowledge | 80.1 | 87.4 | |
GPQA Graduate-level science | 64.3 | 90.3 | |
LiveCodeBench Competitive programming | 49.4 | 88.9 |
GPT-5.2 Pro significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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GPT-5.1
Other models
Context & Performance
Context Window
GPT-5.1
400,000
tokens
GPT-5.2 Pro
400,000
tokens
Speed Performance
| Metric | GPT-5.1 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Tokens/second | 70.0 tok/s | 65.7 tok/s | |
| Time to First Token | 0.76s | 74.76s |
Capabilities
Feature Comparison
| Feature | GPT-5.1 | 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 | GPT-5.1 | GPT-5.2 Pro |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | OpenAI | OpenAI |
| Released | Nov 2025 | Dec 2025 |
GPT-5.1 Modalities
Input
imagetextfile
Output
text
GPT-5.2 Pro Modalities
Input
imagetextfile
Output
text