Key Takeaways
Phi 4 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
- Supports vision
Price Advantage
Phi 4
Benchmark Advantage
GPT-5.2 Pro
Context Window
GPT-5.2 Pro
Speed
GPT-5.2 Pro
Pricing Comparison
Price Comparison
| Metric | Phi 4 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.06 | $21.00 | Phi 4 |
| Output (per 1M tokens) | $0.14 | $168.00 | Phi 4 |
Using a 3:1 input/output ratio, Phi 4 is 100% cheaper overall.
Phi 4 Providers
NextBit $0.06 (Cheapest)
DeepInfra $0.07
GPT-5.2 Pro Providers
OpenAI $21.00 (Cheapest)
Benchmark Comparison
7
Benchmarks Compared
0
Phi 4 Wins
6
GPT-5.2 Pro Wins
Benchmark Scores
| Benchmark | Phi 4 | GPT-5.2 Pro | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 10.5 | 51.2 | |
Coding Index Code generation & understanding | 11.2 | 48.7 | |
Math Index Mathematical reasoning | 18.0 | 99.0 | |
MMLU Pro Academic knowledge | 71.4 | 87.4 | |
GPQA Graduate-level science | 57.5 | 90.3 | |
LiveCodeBench Competitive programming | 23.1 | 88.9 | |
AIME Competition math | 14.3 | - | - |
GPT-5.2 Pro significantly outperforms in coding benchmarks.
Cost vs Quality
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Y-axis:
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Phi 4
Other models
Context & Performance
Context Window
Phi 4
16,384
tokens
Max output: 16,384 tokens
GPT-5.2 Pro
400,000
tokens
Max output: 128,000 tokens
GPT-5.2 Pro has a 96% larger context window.
Speed Performance
| Metric | Phi 4 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Tokens/second | 6.0 tok/s | 98.3 tok/s | |
| Time to First Token | 0.79s | 46.57s |
GPT-5.2 Pro responds 1532% faster on average.
Capabilities
Feature Comparison
| Feature | Phi 4 | 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 | Phi 4 | GPT-5.2 Pro |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Microsoft | OpenAI |
| Released | Jan 2025 | Dec 2025 |
Phi 4 Modalities
Input
text
Output
text
GPT-5.2 Pro Modalities
Input
imagetextfile
Output
text