Key Takeaways
Olmo 3.1 32B Think wins:
- Cheaper input tokens
- Cheaper output tokens
- Faster response time
- Better at math
GPT-5.3 Codex wins:
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Supports vision
- Supports tool calls
Price Advantage
Olmo 3.1 32B Think
Benchmark Advantage
GPT-5.3 Codex
Context Window
GPT-5.3 Codex
Speed
Olmo 3.1 32B Think
Pricing Comparison
Benchmark Comparison
Context & Performance
Capabilities
Feature Comparison
| Feature | Olmo 3.1 32B Think | GPT-5.3 Codex |
|---|---|---|
Vision (Image Input) | ||
Tool/Function Calls | ||
Reasoning Mode | ||
Audio Input | ||
Audio Output | ||
PDF Input | ||
Prompt Caching | ||
Web Search |
License & Release
| Property | Olmo 3.1 32B Think | GPT-5.3 Codex |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Allenai | OpenAI |
| Released | Dec 2025 | Feb 2026 |
Olmo 3.1 32B Think Modalities
Input
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Output
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GPT-5.3 Codex Modalities
Input
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Output
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