Key Takeaways
GPT-5.3 Codex wins:
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Supports vision
Qwen3 4B wins:
- Cheaper input tokens
- Cheaper output tokens
- Faster response time
Price Advantage
Qwen3 4B
Benchmark Advantage
GPT-5.3 Codex
Context Window
GPT-5.3 Codex
Speed
Qwen3 4B
Pricing Comparison
Price Comparison
| Metric | GPT-5.3 Codex | Qwen3 4B | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $1.75 | $0.20 | Qwen3 4B |
| Output (per 1M tokens) | $14.00 | $0.20 | Qwen3 4B |
| Cache Read (per 1M) | $0.17 | $0.10 | Qwen3 4B |
Using a 3:1 input/output ratio, Qwen3 4B is 96% cheaper overall.
GPT-5.3 Codex Providers
No provider data available
Qwen3 4B Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
2
GPT-5.3 Codex Wins
0
Qwen3 4B Wins
Benchmark Scores
| Benchmark | GPT-5.3 Codex | Qwen3 4B | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 54.0 | 12.5 | |
Coding Index Code generation & understanding | 53.1 | - | - |
MMLU Pro Academic knowledge | - | 58.6 | - |
GPQA Graduate-level science | 91.5 | 39.8 | |
LiveCodeBench Competitive programming | - | 23.3 | - |
AIME Competition math | - | 21.3 | - |
GPT-5.3 Codex significantly outperforms in coding benchmarks.
Cost vs Quality
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Y-axis:
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Other models
Context & Performance
Context Window
GPT-5.3 Codex
400,000
tokens
Qwen3 4B
N/A
tokens
Speed Performance
| Metric | GPT-5.3 Codex | Qwen3 4B | Winner |
|---|---|---|---|
| Tokens/second | 68.3 tok/s | 104.8 tok/s | |
| Time to First Token | 81.66s | 0.95s |
Qwen3 4B responds 53% faster on average.
Capabilities
Feature Comparison
| Feature | GPT-5.3 Codex | Qwen3 4B |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | GPT-5.3 Codex | Qwen3 4B |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | OpenAI | Qwen |
| Released | Feb 2026 | Unknown |
GPT-5.3 Codex Modalities
Input
textimage
Output
text
Qwen3 4B Modalities
Input
Output