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GPT-5.6 Terra vs Hy4 (low)

The average score is effectively tied at 5.8 vs 5.8. GPT-5.6 Terra has the lower benchmark cost at $0.377 vs $2.365. GPT-5.6 Terra is faster at 4.11s vs 177.34s, with pass rates of 40.6% vs 60.9%.

Last updated at: 2026-11-10

Compared models

Rank
#328
Total Output Tokens
7,381
Response Time (avg)
4.11s
Total Cost
$0.377
Rank
#324
Total Output Tokens
1,785,684
Response Time (avg)
177.34s
Total Cost
$2.365
Recommended model GPT-5.6 Terra

It has the best score here (5.8), while costing about 6.3x less than Hy4 (low).

Detailed comparison

Metric GPT-5.6 Terra GPT-5.6 Terra none Release: 2026-07-09 Hy4 Hy4 low Release: 2026-11-04
Score 5.8 5.8
Rank #328 #324
Reliability 10.0 9.6
Consistency 9.0 8.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 40.6% 60.9%
Flaky tests 3 5
Total Runs 69 69
Cost per result 7.313 21.492
Total Cost $0.377 $2.365
Input Price $2.000 / 1M $0.417 / 1M
Output Price $12.000 / 1M $1.251 / 1M
Cache Read Price $0.200 / 1M $0.021 / 1M
Cache Write Price $2.500 / 1M N/A
Total Input Tokens 213,564 314,431
Output Tokens 7,381 3,549
Reasoning Tokens 0 1,782,135
Response Time (avg) 4.11s 177.34s
Response Time (max) 57.98s 490.23s
Response Time (total) 94.52s 4078.93s
Parameters ~1T total (~60B active) ~770B total (~49B 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.

#328 GPT-5.6 Terra

none
Cost
$0.030
Time
14.7s
Tokens
2,082 tok

#324 Hy4

low
OpenRouter returned no showcase content (finish_reason: length).
Cost
$0.083
Time
393.3s
Tokens
65,667 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
GPT-5.6 Terra 5.5 10.0 33.3% 0 1.00s 7,302 336 0
Hy4 5.7 7.2 55.6% 1 275.42s 7,527 23 372,182

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