OpenAI
OpenAI o3
Heavyweight reasoning — best math + science, slower per token.
Reasoning
OpenAI o3 is not currently offered on Token Harbor.
Looking for something comparable? GPT-5.5 is live on our catalog — same family, currently served and priced.
Browse live models →Ratings & benchmarks
Snapshot 2026-04-28Overall
4.7 / 5
Composite of intelligence + reliability.
Output speed
30 t/s
Output tokens per second under typical load.
Time to first token
6.0 s
Lower is better. Reasoning models naturally stretch this.
Value
3.5 / 5
Intelligence per dollar at typical mix.
Context window
200,000 tokens