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GPT-6.1 Terra (high) vs GPT-6 Astra (medium)

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 $2.707. GPT-6 Astra (medium) is faster at 9.90s vs 11.18s, with pass rates of 88.4% vs 91.3%.

Last updated at: 2026-10-26

Compared models

Rank
#22
Total Output Tokens
44,429
Response Time (avg)
11.18s
Total Cost
$0.396
Rank
#23
Total Output Tokens
21,045
Response Time (avg)
9.90s
Total Cost
$2.707
Recommended model GPT-6.1 Terra (high)

It has the best score here (9.5), while costing about 6.8x less than GPT-6 Astra (medium).

Detailed comparison

Metric GPT-6.1 Terra GPT-6.1 Terra high Release: 2026-10-26 GPT-6 Astra GPT-6 Astra medium Release: 2026-09-04
Score 9.5 9.5
Rank #22 #23
Reliability 10.0 9.9
Consistency 9.6 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 88.4% 91.3%
Flaky tests 1 2
Total Runs 69 69
Cost per result 1.979 13.535
Total Cost $0.396 $2.707
Input Price $1.000 / 1M $10.000 / 1M
Output Price $5.000 / 1M $50.000 / 1M
Cache Read Price $0.050 / 1M $1.000 / 1M
Cache Write Price $1.250 / 1M $12.500 / 1M
Total Input Tokens 173,620 165,464
Output Tokens 5,456 5,591
Reasoning Tokens 38,973 15,454
Response Time (avg) 11.18s 9.90s
Response Time (max) 66.34s 73.48s
Response Time (total) 257.10s 227.67s
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.

#22 GPT-6.1 Terra

high
Cost
$0.026
Time
58.2s
Tokens
5,189 tok

#23 GPT-6 Astra

medium
Cost
$0.231
Time
81.0s
Tokens
4,708 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-6.1 Terra 10.0 10.0 100.0% 0 7.25s 7,302 387 3,641
GPT-6 Astra 10.0 10.0 100.0% 0 4.95s 7,302 394 1,673

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