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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-20b is 100% cheaper than OpenAI: GPT-4o Audio
⚡OpenAI: GPT-4o Audio is 145ms faster than gpt-oss-20b
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
| Spec | gpt-oss-20b | OpenAI: GPT-4o Audio |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | Free | $2.50 |
| Output price / 1M tokens | — | $10.00 |
| Context window | 128k tokens | 128k tokens |
| Latency (p50) | 145ms | — |
| 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-20b is for lower latency, and local or specialized use-cases.
The gpt-4o-audio-preview model adds support for audio inputs as prompts. This enhancement allows the model to detect nuances within audio recordings and add depth to generated user experiences. Audio outputs...
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