Solar System
broken medium fixed version →
Tech. quality78
UX71
Time2 min 12 s
Cost$0.38
Compare →
GPT-5.5
Loads without errors4/5#12 of 26
Tech. quality94/100#12 of 26
UX82/100#19 of 26
Total cost$2.06
Average time2 min 19 s#9 of 26
Total tokens70,525
API price: $5 / $30 per 1M input / output tokens · as of 17/10/2026 source ↗
What is GPT-5.5 good for?
OpenAI's model for coding and professional work.
Description based on the maker · source ↗
- Maker
- OpenAI
- Released
- 23/04/2026
- Model weights
- closed, the model is available through the API only
- Reasoning levels
- low medium high
How did GPT-5.5 do in the AI Lab tests?
- 4 of 5 outputs load without errors; 1 more ran after one fix by the same model.
- Its best technical result was on the “Monitor test” prompt (100/100).
- Did not work (original output): Solar System.
- It implemented the chess rules flawlessly – passing the objective perft test on all 6 positions.
- Average time per prompt 2 min 19 s#9 of 26
- Average cost per prompt $0.41#21 of 26
- Technical quality 94/100#12 of 26
- Automatic UX rating 82/100#19 of 26
Outputs
All outputs of GPT-5.5 on the 5 prompts every other model got as well.
GTA-style game
loads medium
Tech. quality98
UX100
Time1 min 51 s
Cost$0.33
Compare →
Monitor test
loads medium
Tech. quality100
UX98
Time2 min 21 s
Cost$0.41
Compare →
New York & Central Park map
loads medium
Tech. quality97
UX73
Time3 min 02 s
Cost$0.55
Compare →
Chess with an engine
loads medium
Tech. quality98
UX69
Time2 min 11 s
Cost$0.40
Compare →
Cost = tokens priced with the API price list valid on the date shown next to the cost (prices change). ≈ = estimate (only the total token count is known), no ≈ = exact from input / output tokens. “Loads” = the page opens without errors; technical quality also checks behaviour during use – judge the quality in the viewer.