Key Takeaways
GPT-5.2-Codex wins:
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Supports vision
- Has reasoning mode
- Supports tool calls
GPT-5.4 Mini wins:
- Cheaper input tokens
- Cheaper output tokens
- Faster response time
Price Advantage
GPT-5.4 Mini
Benchmark Advantage
GPT-5.2-Codex
Context Window
GPT-5.2-Codex
Speed
GPT-5.4 Mini
Pricing Comparison
Price Comparison
| Metric | GPT-5.2-Codex | GPT-5.4 Mini | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $1.75 | $0.75 | GPT-5.4 Mini |
| Output (per 1M tokens) | $14.00 | $4.50 | GPT-5.4 Mini |
| Cache Read (per 1M) | $0.17 | $0.07 | GPT-5.4 Mini |
Using a 3:1 input/output ratio, GPT-5.4 Mini is 65% cheaper overall.
GPT-5.2-Codex Providers
No provider data available
GPT-5.4 Mini Providers
No provider data available
Benchmark Comparison
3
Benchmarks Compared
3
GPT-5.2-Codex Wins
0
GPT-5.4 Mini Wins
Benchmark Scores
| Benchmark | GPT-5.2-Codex | GPT-5.4 Mini | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 49.0 | 23.3 | |
Coding Index Code generation & understanding | 43.0 | 25.3 | |
GPQA Graduate-level science | 89.9 | 60.6 |
GPT-5.2-Codex significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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Other models
Context & Performance
Context Window
GPT-5.2-Codex
400,000
tokens
GPT-5.4 Mini
N/A
tokens
Speed Performance
| Metric | GPT-5.2-Codex | GPT-5.4 Mini | Winner |
|---|---|---|---|
| Tokens/second | 97.4 tok/s | 210.8 tok/s | |
| Time to First Token | 5.34s | 0.48s |
GPT-5.4 Mini responds 116% faster on average.
Capabilities
Feature Comparison
| Feature | GPT-5.2-Codex | GPT-5.4 Mini |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | GPT-5.2-Codex | GPT-5.4 Mini |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | OpenAI | OpenAI |
| Released | Jan 2026 | Unknown |
GPT-5.2-Codex Modalities
Input
textimage
Output
text
GPT-5.4 Mini Modalities
Input
Output