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Ranks providers by how quickly the first generated token appears. Providers without enough recent data remain visible after ranked rows.
OpenAI currently ranks first at 28.36 s via openai.
| Rank | Provider / route | Time to first token | Speed measurements | Endpoint details |
|---|---|---|---|---|
| #1 | Provider / route OpenAI openai | Time to first token28.36 s | Speed measurements
| Endpoint details
|
Endpoint data fetched .
o3 Deep Research endpoint guide
1 of 1 o3 Deep Research endpoint currently have the published data required for this ranking. OpenAI leads at 28.36 s via openai. The table keeps unranked routes visible so missing measurements do not look like missing provider availability.
The first-token ranking orders endpoints by the recent median time before output begins. This is useful for interactive applications, but it should be read alongside throughput because the first provider to start is not always the first to finish a long answer.
Only 1 route currently qualifies, so the rank alone provides limited choice. Review every visible endpoint for price, speed, uptime, context length, and route-specific configuration.
o3 Deep Research has 1 published provider option, and performance data is matched to each exact OpenRouter routing tag. Different quantization, context, regional deployment, or provider configuration can change price and behavior even when the underlying model name is identical.
