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GPT-5.6 Terra (high) vs Step 3.7 Flash (medium)

GPT-5.6 Terra (high) leads on average score with 8.3 vs 7.8. Step 3.7 Flash (medium) has the lower benchmark cost at $0.571 vs $0.698. GPT-5.6 Terra (high) is faster at 13.62s vs 26.57s, with pass rates of 69.6% vs 68.1%.

Last updated at: 2026-10-19

Compared models

Rank
#91
Total Output Tokens
60,065
Response Time (avg)
13.62s
Total Cost
$0.698
Rank
#129
Total Output Tokens
440,835
Response Time (avg)
26.57s
Total Cost
$0.571
Recommended model GPT-5.6 Terra (high)

It has the best score here (8.3), while responding about 2.0x faster than Step 3.7 Flash (medium).

Detailed comparison

Metric GPT-5.6 Terra GPT-5.6 Terra high Release: 2026-07-09 Step 3.7 Flash Step 3.7 Flash medium Release: 2026-05-29
Score 8.3 7.8
Rank #91 #129
Reliability 10.0 10.0
Consistency 9.4 8.7
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 69.6% 68.1%
Flaky tests 2 4
Total Runs 69 69
Cost per result 8.674 4.392
Total Cost $0.698 $0.571
Input Price $2.000 / 1M $0.200 / 1M
Output Price $12.000 / 1M $1.150 / 1M
Cache Read Price $0.200 / 1M $0.040 / 1M
Cache Write Price $2.500 / 1M N/A
Total Input Tokens 197,239 319,524
Output Tokens 6,083 440,835
Reasoning Tokens 53,982 0
Response Time (avg) 13.62s 26.57s
Response Time (max) 91.49s 152.83s
Response Time (total) 313.21s 611.09s
Parameters ~1T total (~60B active) 198B total (11B active)
Availability Closed Open source

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.

#91 GPT-5.6 Terra

high
Cost
$0.055
Time
30.2s
Tokens
3,748 tok

#129 Step 3.7 Flash

medium
Cost
$0.006
Time
46.2s
Tokens
4,466 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 7.6 7.2 77.8% 1 9.14s 7,302 370 6,087
Step 3.7 Flash 8.8 7.8 88.9% 1 27.42s 7,437 44,797 0

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