gpt-5-3
Developer: OpenAI
Also known as
GPT-5.3 by OpenAI is available through 31 API providers on LMSpeed. Compare API pricing from $1.00 to $225.00 per million input tokens across providers. In speed benchmarks, the fastest provider reaches 64 tok/s.
Compare GPT-5.3 API pricing across 31 providers. Input prices range from $1.00 to $225.00 per million input. Codex API offers the lowest rate at $1.00/M.
| Provider | Model Variant | Input ($/M) | Output ($/M) | Speed (t/s) |
|---|---|---|---|---|
| Codex API | gpt-5.3 | $1.00 | $8.00 | — |
 小波 API | gpt-5.3 | $1.50 | $1.50 | — |
 KKSJ-AI | gpt-5.3-chat-2026-03-03 | $1.57 | $12.60 | — |
| KKSJ-AI | gpt-5.3-chat-latest | $1.57 | $12.60 | — |
| AAAI | gpt-5.3-chat-latest | $1.75 | $14.00 | — |
 柏拉图AI | gpt-5.3-chat-latest | $1.75 | $14.00 | — |
 UnifyLLM | gpt-5.3-chat-latest | $1.75 | $14.00 | — |
 V-API | gpt-5.3-chat-latest | $1.75 | $14.00 | — |
 毫秒API | gpt-5.3-chat-latest | $1.75 | $14.00 | — |
| gpt-5.3-chat-latest | $1.75 | $14.00 | — | |
 全球AI | gpt-5.3-chat | $1.75 | $14.00 | — |
| 钱多多 API | gpt-5.3-chat-latest | $1.75 | $14.00 | — |
| Seamee API | openai/gpt-5.3-chat | $1.75 | $14.00 | — |
 UniAiX | gpt-5.3-chat | $1.75 | $14.00 | — |
 OpenRouter Fans | openai/gpt-5.3-chat | $1.75 | $14.00 | — |
| PoloAPI | gpt-5.3-chat | $1.75 | $14.00 | — |
| PoloAPI | gpt-5.3-chat-2026-03-03 | $1.75 | $14.00 | — |
| PoloAPI | gpt-5.3-chat-latest | $1.75 | $14.00 | — |
| 性价比API | gpt-5.3-chat-latest | $1.75 | $14.00 | — |
| EasyMore | gpt-5.3-chat | $1.75 | $14.00 | — |
Pricing data from provider public APIs
Compare speed and latency performance across all API providers.
Showing 1-1 of 1 providers
| Provider | Speed | Latency | Tests |
|---|---|---|---|
gpt-5.3-chat | 63.77 tok/s | 2.64s | 10 |
Latest benchmark results measuring API response speed and first-token latency.
| Time | Model | Speed | Latency |
|---|---|---|---|
| 03/04/2026, 19:37 | gpt-5.3-chat | 54.96 tok/s | 1.92s |
| 03/04/2026, 19:37 | gpt-5.3-chat | 49.23 tok/s | 2.45s |
| 03/04/2026, 19:37 |
gpt-5.3-chat |
60.56 tok/s |
2.42s |
| 03/04/2026, 19:37 | gpt-5.3-chat | 75.00 tok/s | 3.02s |
| 03/04/2026, 19:37 | gpt-5.3-chat | 70.83 tok/s | 1.89s |
| 03/04/2026, 19:29 | gpt-5.3-chat | 60.83 tok/s | 2.19s |
| 03/04/2026, 19:29 | gpt-5.3-chat | 43.68 tok/s | 3.00s |
| 03/04/2026, 19:29 | gpt-5.3-chat | 74.21 tok/s | 3.24s |
| 03/04/2026, 19:29 | gpt-5.3-chat | 71.21 tok/s | 3.18s |
| 03/04/2026, 19:29 | gpt-5.3-chat | 77.14 tok/s | 3.04s |
