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

GPT-6.1 Sol (low) leads on average score with 9.6 vs 8.2. GPT-6.1 Sol (low) has the lower benchmark cost at $0.460 vs $0.483. GPT-6.1 Sol (low) is faster at 7.15s vs 8.93s, with pass rates of 71.0% vs 92.8%.

Last updated at: 2026-10-07

Compared models

Rank
#89
Total Output Tokens
33,189
Response Time (avg)
8.93s
Total Cost
$0.483
Rank
#16
Total Output Tokens
13,138
Response Time (avg)
7.15s
Total Cost
$0.460
Recommended model GPT-6.1 Sol (low)

It has the strongest score in this comparison (9.6) and the best overall balance of cost and response time across 2 models.

Detailed comparison

Metric GPT-5.6 Terra GPT-5.6 Terra medium Release: 2026-07-09 GPT-6.1 Sol GPT-6.1 Sol low Release: 2026-09-29
Score 8.2 9.6
Rank #89 #16
Reliability 10.0 10.0
Consistency 9.3 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 71.0% 92.8%
Flaky tests 2 1
Total Runs 69 69
Cost per result 5.768 2.187
Total Cost $0.483 $0.460
Input Price $2.000 / 1M $2.000 / 1M
Output Price $12.000 / 1M $10.000 / 1M
Cache Read Price $0.200 / 1M $0.100 / 1M
Cache Write Price $2.500 / 1M $2.500 / 1M
Total Input Tokens 172,507 163,900
Output Tokens 5,824 4,958
Reasoning Tokens 27,365 8,180
Response Time (avg) 8.93s 7.15s
Response Time (max) 54.74s 46.57s
Response Time (total) 205.39s 164.47s
Parameters ~1T total (~60B active) ~2T total (~150B 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.

#89 GPT-5.6 Terra

medium
Cost
$0.035
Time
16.3s
Tokens
2,418 tok

#16 GPT-6.1 Sol

low
Cost
$0.028
Time
44.6s
Tokens
2,881 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 6.1 7.2 55.6% 1 7.19s 7,302 427 4,527
GPT-6.1 Sol 10.0 10.0 100.0% 0 4.48s 7,302 388 1,286

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