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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.
💰gpt-oss-120b is 100% cheaper than OpenAI: GPT-4o-mini
⚡OpenAI: GPT-4o-mini is 900ms faster than gpt-oss-120b
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
OpenAI: GPT-4o-mini is 2000% faster
| Spec | gpt-oss-120b | OpenAI: GPT-4o-mini |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | Free | $0.15 |
| Output price / 1M tokens | — | $0.60 |
| Context window | 128k tokens | 128k tokens |
| Latency (p50) | 945ms | 45ms |
| Best benchmark score | — | — |
| Open source | No | No |
OpenAI’s open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases – gpt-oss-120b is for production, general purpose, high reasoning use-cases.
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...
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