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Claude Opus 5.5 (low) vs GPT-6.1 Terra (max)

The average score is effectively tied at 9.4 vs 9.4. Claude Opus 5.5 (low) has the lower benchmark cost at $1.733 vs $2.209. Claude Opus 5.5 (low) is faster at 25.68s vs 66.42s, with pass rates of 88.4% vs 89.9%.

Last updated at: 2026-10-26

Compared models

Rank
#26
Total Output Tokens
25,006
Response Time (avg)
25.68s
Total Cost
$1.733
Rank
#27
Total Output Tokens
391,441
Response Time (avg)
66.42s
Total Cost
$2.209
Recommended model Claude Opus 5.5 (low)

It has the best score here (9.4), while responding about 2.6x faster than GPT-6.1 Terra (max).

Detailed comparison

Metric Claude Opus 5.5 Claude Opus 5.5 low Release: 2026-09-23 GPT-6.1 Terra GPT-6.1 Terra max Release: 2026-10-26
Score 9.4 9.4
Rank #26 #27
Reliability 10.0 10.0
Consistency 9.3 9.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 88.4% 89.9%
Flaky tests 2 3
Total Runs 69 69
Cost per result 9.118 11.623
Total Cost $1.733 $2.209
Input Price $4.000 / 1M $1.000 / 1M
Output Price $20.000 / 1M $5.000 / 1M
Cache Read Price $0.200 / 1M $0.050 / 1M
Cache Write Price $5.000 / 1M $1.250 / 1M
Total Input Tokens 308,056 250,989
Output Tokens 9,434 5,610
Reasoning Tokens 15,572 385,831
Response Time (avg) 25.68s 66.42s
Response Time (max) 89.16s 723.45s
Response Time (total) 590.71s 1527.58s
Parameters ~5T total (~500B active) ~1T total (~60B active)
Availability Closed Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#26 Claude Opus 5.5

low
Invalid SVG
Cost
$0.038
Time
19.1s
Tokens
2,010 tok

#27 GPT-6.1 Terra

max
Cost
$0.183
Time
406.4s
Tokens
36,629 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 5.5 10.0 10.0 100.0% 0 12.23s 10,608 575 2,777
GPT-6.1 Terra 10.0 10.0 100.0% 0 44.32s 7,302 390 34,227

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