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Claude Sonnet 4.6 (medium) vs GPT-5.6 Terra (high)

GPT-5.6 Terra (high) leads on average score with 8.0 vs 7.8. GPT-5.6 Terra (high) has the lower benchmark cost at $0.836 vs $2.126. GPT-5.6 Terra (high) is faster at 11.22s vs 28.08s, with pass rates of 65.2% vs 68.2%.

Last updated at: 2026-08-20

Rank
#67
Total Output Tokens
120,427
Response Time (avg)
28.08s
Total Cost
$2.126
Rank
#57
Total Output Tokens
56,088
Response Time (avg)
11.22s
Total Cost
$0.836
Recommended model GPT-5.6 Terra (high)

It has the best score here (8.0), while costing about 2.5x less than Claude Sonnet 4.6 (medium).

Detailed comparison

Metric Claude Sonnet 4.6 Claude Sonnet 4.6 medium Release: 2026-02-17 GPT-5.6 Terra GPT-5.6 Terra high Release: 2026-07-09
Score 7.8 8.0
Rank #67 #57
Reliability 10.0 10.0
Consistency 9.5 9.3
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 65.2% 68.2%
Flaky tests 1 2
Total Runs 66 66
Cost per result 15.182 7.293
Total Cost $2.126 $0.836
Input Price $3.000 / 1M $2.000 / 1M
Output Price $15.000 / 1M $12.000 / 1M
Total Input Tokens 106,316 81,056
Output Tokens 79,338 5,055
Reasoning Tokens 41,089 51,033
Response Time (avg) 28.08s 11.22s
Response Time (max) 140.96s 91.49s
Response Time (total) 421.15s 246.77s
Parameters ~1T total (~100B active) ~1T total (~60B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#67 Claude Sonnet 4.6

medium
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#57 GPT-5.6 Terra

high
Cost
$0.055
Time
30.2s
Tokens
3,748 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 Sonnet 4.6 5.7 6.6 44.4% 1 33.29s 6,995 16,089 3,686
GPT-5.6 Terra 7.6 7.2 77.8% 1 9.14s 7,302 370 6,087

Quick Compare

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