Key Takeaways
GPT-5.3 Codex wins:
- Higher intelligence benchmark
- Better at coding
- Has reasoning mode
Llama 4 Maverick wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
- Faster response time
- Better at math
Price Advantage
Llama 4 Maverick
Benchmark Advantage
GPT-5.3 Codex
Context Window
Llama 4 Maverick
Speed
Llama 4 Maverick
Pricing Comparison
Price Comparison
| Metric | GPT-5.3 Codex | Llama 4 Maverick | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $1.75 | $0.15 | Llama 4 Maverick |
| Output (per 1M tokens) | $14.00 | $0.60 | Llama 4 Maverick |
| Cache Read (per 1M) | $0.17 | N/A | GPT-5.3 Codex |
Using a 3:1 input/output ratio, Llama 4 Maverick is 95% cheaper overall.
GPT-5.3 Codex Providers
No provider data available
Llama 4 Maverick Providers
No provider data available
Benchmark Comparison
8
Benchmarks Compared
3
GPT-5.3 Codex Wins
0
Llama 4 Maverick Wins
Benchmark Scores
| Benchmark | GPT-5.3 Codex | Llama 4 Maverick | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 54.0 | 18.4 | |
Coding Index Code generation & understanding | 53.1 | 15.6 | |
Math Index Mathematical reasoning | - | 19.3 | - |
MMLU Pro Academic knowledge | - | 80.9 | - |
GPQA Graduate-level science | 91.5 | 67.1 | |
LiveCodeBench Competitive programming | - | 39.7 | - |
Aider Real-world code editing | - | 15.6 | - |
AIME Competition math | - | 39.0 | - |
GPT-5.3 Codex significantly outperforms in coding benchmarks.
Cost vs Quality
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Other models
Context & Performance
Context Window
GPT-5.3 Codex
400,000
tokens
Llama 4 Maverick
1,048,576
tokens
Llama 4 Maverick has a 62% larger context window.
Speed Performance
| Metric | GPT-5.3 Codex | Llama 4 Maverick | Winner |
|---|---|---|---|
| Tokens/second | 68.4 tok/s | 129.9 tok/s | |
| Time to First Token | 87.36s | 0.47s |
Llama 4 Maverick responds 90% faster on average.
Capabilities
Feature Comparison
| Feature | GPT-5.3 Codex | Llama 4 Maverick |
|---|---|---|
| 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 | Llama 4 Maverick |
|---|---|---|
| License | Proprietary | Open Source |
| Author | OpenAI | Meta-llama |
| Released | Feb 2026 | Apr 2025 |
GPT-5.3 Codex Modalities
Input
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Output
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Llama 4 Maverick Modalities
Input
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Output
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