AnthropicXhigh Released September 2026
How Claude Opus 5.5 compares with the other 93 ranked language models.
Very capable. Ranked #4 of 94 on the overall intelligence score, ahead of 97% of models.
Average speed. Writes about 59 words per second, faster than 52% of models.
Thinks before answering. You wait about 1.2 min before the answer starts, because it reasons through the problem first.
Premium price. $8.00 per million tokens, cheaper than 22% of models.
Good for
Not ideal for
Intelligence
57
overall score
#4 of 94typical 30
Coding
–
coding score
typical –
Speed
78
tokens per second
#46 of 94typical 90
Wait
1.2 min
before it replies
#70 of 80typical 14s
Price
$8.00
per 1M tokens
#69 of 88typical $2.00
Scores on individual tests that make up the intelligence score. The faint line marks the best score of any model.
Humanity's Last Exam
Very hard expert questions across many subjects
SciCode
Writing code to solve science research problems
Long documents
Finding and reasoning over facts in very long texts
Terminal-Bench
Doing real tasks on a computer by itself, like an agent
This model next to the models closest to it. Click another bar to open that model.
Through the API, at the listed price. Chat apps usually charge a monthly plan instead.
1,000 chat replies
a question and a ~350-word answer, 1,000 times
Summarise a 100-page report
about 50,000 words in, a one-page summary out
Write a 2,000-word article
a short brief in, a long article out
Input, per 1M tokens
$4.00
Output, per 1M tokens
$20.0
Median times measured through the API.
Most of the wait is the model thinking before it writes. That makes answers better on hard questions, but slow for quick chats.
Higher effort settings think longer: smarter, but slower and pricier.
Other companies' models with the closest intelligence score.
Benchmark data from Artificial Analysis, an independent benchmarking company. Rankings refresh every few hours.
kitio.ai