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Side-by-side comparison of API pricing, context window, latency, and benchmark performance. Data refreshed daily from provider APIs and ModelStop's own latency probes.
💰OpenAI: GPT-4o-mini is 88% cheaper than OpenAI: GPT-5 Codex
⚡OpenAI: GPT-5 Codex is 9ms faster than OpenAI: GPT-4o-mini
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
OpenAI: GPT-4o-mini is 733% cheaper
OpenAI: GPT-5 Codex is 25% faster
| Spec | OpenAI: GPT-4o-mini | OpenAI: GPT-5 Codex |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | $0.15 | $1.25 |
| Output price / 1M tokens | $0.60 | $10.00 |
| Context window | 128k tokens | 400k tokens |
| Latency (p50) | 45ms | 36ms |
| Best benchmark score | — | — |
| Open source | No | No |
GPT-4o mini is OpenAI's newest model after [GPT-4 Omni](/models/openai/gpt-4o), supporting both text and image inputs with text outputs. As their most advanced small model, it is many multiples more affordable...
GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
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