Scores updated · 4 tests both models report · How we compare
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
GPT-5.5$5.00 to read · $30.00 to writePrice from Artificial Analysis
GPT-6.1 TerraNo current price is tracked.
Every test, side by side
All 4 tests both models report. The winning score is in its model's colour; marks a score checked independently.
Other results4 tests
- HealthBench Professional length-adjustedGPT-6.1 Terra by 10.951.862.7+10.9
- HealthBench length-adjustedGPT-5.5 by 1.456.555.1+1.4
- HealthBench Consensus length-adjustedtie95.695.1tie
- HealthBench Hard length-adjustedtie31.531.4tie
Questions people ask
How do you compare the two?
We use the 4 benchmark tests both models have published scores on. None of them is in the eight capability areas we count, so this page lists them without a verdict. Each score is the one shown on the model's own page.