| Feature | Codex Models (e.g., GPT-5-Codex) | Low-Reasoning (e.g., o3-mini "Low") | High-Reasoning (e.g., o3 "High") |
|---|---|---|---|
| Excelled Tasks | Code generation, refactoring, and API documentation. | Simple logic checks, brainstorming, and fast summaries. | Complex math, scientific research, and deep architectural debugging. |
| Speed / Time | Fast: Near-instant "streaming" of code and text. | Very Fast: Optimized for sub-second response times. | Slow: Takes 10–60+ seconds to "think" before responding. |
| Cost | Standard: Priced per standard input/output token. | Economical: Uses minimal "reasoning tokens," making it cost-effective. | Premium: Most expensive due to high "Chain of Thought" token usage. |
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