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GPT-5.4 Nano (medium) vs GPT-5.6 Terra (low)

The average score is effectively tied at 8.0 vs 7.9. GPT-5.4 Nano (medium) has the lower benchmark cost at $0.235 vs $0.435. GPT-5.6 Terra (low) is faster at 7.58s vs 15.95s, with pass rates of 66.7% vs 75.4%.

Last updated at: 2026-10-26

Compared models

Rank
#121
Total Output Tokens
110,910
Response Time (avg)
15.95s
Total Cost
$0.235
Rank
#124
Total Output Tokens
24,213
Response Time (avg)
7.58s
Total Cost
$0.435
Recommended model GPT-5.4 Nano (medium)

It has the best score here (8.0), while costing about 1.9x less than GPT-5.6 Terra (low).

Detailed comparison

Metric GPT-5.4 Nano GPT-5.4 Nano medium Release: 2026-03-17 GPT-5.6 Terra GPT-5.6 Terra low Release: 2026-07-09
Score 8.0 7.9
Rank #121 #124
Reliability 10.0 10.0
Consistency 8.6 8.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 66.7% 75.4%
Flaky tests 4 6
Total Runs 69 69
Cost per result 1.432 5.277
Total Cost $0.235 $0.435
Input Price $0.200 / 1M $2.000 / 1M
Output Price $1.250 / 1M $12.000 / 1M
Cache Read Price $0.020 / 1M $0.200 / 1M
Cache Write Price N/A $2.500 / 1M
Total Input Tokens 237,088 176,890
Output Tokens 8,235 5,688
Reasoning Tokens 102,675 18,525
Response Time (avg) 15.95s 7.58s
Response Time (max) 94.06s 54.57s
Response Time (total) 366.93s 174.39s
Parameters ~120B total (~5B 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.

#121 GPT-5.4 Nano

medium
Cost
$0.007
Time
24.6s
Tokens
4,943 tok

#124 GPT-5.6 Terra

low
Cost
$0.034
Time
16.8s
Tokens
2,348 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-5.4 Nano 6.1 4.7 66.7% 2 19.12s 7,305 516 20,778
GPT-5.6 Terra 6.6 4.6 77.8% 2 9.56s 7,302 429 6,821

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