Key Takeaways
GPT-5.4 wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
o4 Mini Deep Research wins:
- Cheaper input tokens
- Cheaper output tokens
- Has reasoning mode
Price Advantage
o4 Mini Deep Research
Benchmark Advantage
GPT-5.4
Context Window
GPT-5.4
Speed
GPT-5.4
Pricing Comparison
Price Comparison
| Metric | GPT-5.4 | o4 Mini Deep Research | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $2.50 | $2.00 | o4 Mini Deep Research |
| Output (per 1M tokens) | $15.00 | $8.00 | o4 Mini Deep Research |
| Cache Read (per 1M) | $0.25 | $0.50 | GPT-5.4 |
Using a 3:1 input/output ratio, o4 Mini Deep Research is 38% cheaper overall.
GPT-5.4 Providers
No provider data available
o4 Mini Deep Research Providers
No provider data available
Benchmark Comparison
3
Benchmarks Compared
0
GPT-5.4 Wins
0
o4 Mini Deep Research Wins
Benchmark Scores
| Benchmark | GPT-5.4 | o4 Mini Deep Research | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 57.0 | - | - |
Coding Index Code generation & understanding | 57.3 | - | - |
GPQA Graduate-level science | 92.0 | - | - |
GPT-5.4 significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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Other models
Context & Performance
Context Window
GPT-5.4
1,050,000
tokens
o4 Mini Deep Research
200,000
tokens
GPT-5.4 has a 81% larger context window.
Speed Performance
| Metric | GPT-5.4 | o4 Mini Deep Research | Winner |
|---|---|---|---|
| Tokens/second | 76.9 tok/s | N/A | |
| Time to First Token | 179.87s | N/A |
Capabilities
Feature Comparison
| Feature | GPT-5.4 | o4 Mini Deep Research |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | GPT-5.4 | o4 Mini Deep Research |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | OpenAI | OpenAI |
| Released | Mar 2026 | Oct 2025 |
GPT-5.4 Modalities
Input
textimagefile
Output
text
o4 Mini Deep Research Modalities
Input
fileimagetext
Output
text