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GPT-5.6 Sol (medium) vs GPT-6.1 Terra (high)

The average score is effectively tied at 9.5 vs 9.5. GPT-6.1 Terra (high) has the lower benchmark cost at $0.396 vs $1.700. GPT-6.1 Terra (high) is faster at 11.18s vs 14.57s, with pass rates of 91.3% vs 88.4%.

Last updated at: 2026-10-26

Compared models

Rank
#21
Total Output Tokens
38,005
Response Time (avg)
14.57s
Total Cost
$1.700
Rank
#22
Total Output Tokens
44,429
Response Time (avg)
11.18s
Total Cost
$0.396
Recommended model GPT-6.1 Terra (high)

It has the best score here (9.5), while costing about 4.3x less than GPT-5.6 Sol (medium).

Detailed comparison

Metric GPT-5.6 Sol GPT-5.6 Sol medium Release: 2026-07-09 GPT-6.1 Terra GPT-6.1 Terra high Release: 2026-10-26
Score 9.5 9.5
Rank #21 #22
Reliability 10.0 10.0
Consistency 8.9 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 91.3% 88.4%
Flaky tests 3 1
Total Runs 69 69
Cost per result 8.944 1.979
Total Cost $1.700 $0.396
Input Price $2.000 / 1M $1.000 / 1M
Output Price $10.000 / 1M $5.000 / 1M
Cache Read Price $0.200 / 1M $0.050 / 1M
Cache Write Price $2.500 / 1M $1.250 / 1M
Total Input Tokens 191,341 173,620
Output Tokens 5,665 5,456
Reasoning Tokens 32,340 38,973
Response Time (avg) 14.57s 11.18s
Response Time (max) 79.40s 66.34s
Response Time (total) 335.16s 257.10s
Parameters ~2T total (~150B 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.

#21 GPT-5.6 Sol

medium
Cost
$0.124
Time
57.2s
Tokens
4,199 tok

#22 GPT-6.1 Terra

high
Cost
$0.026
Time
58.2s
Tokens
5,189 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 Sol 10.0 10.0 100.0% 0 9.40s 7,302 394 4,706
GPT-6.1 Terra 10.0 10.0 100.0% 0 7.25s 7,302 387 3,641

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