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

The average score is effectively tied at 9.6 vs 9.6. GPT-6.1 Terra (medium) has the lower benchmark cost at $0.291 vs $2.160. GPT-6 Astra (low) is faster at 7.01s vs 7.99s, with pass rates of 91.3% vs 91.3%.

Last updated at: 2026-10-26

Compared models

Rank
#17
Total Output Tokens
24,483
Response Time (avg)
7.99s
Total Cost
$0.291
Rank
#14
Total Output Tokens
11,389
Response Time (avg)
7.01s
Total Cost
$2.160
Recommended model GPT-6.1 Terra (medium)

It has the best score here (9.6), while costing about 7.4x less than GPT-6 Astra (low).

Detailed comparison

Metric GPT-6.1 Terra GPT-6.1 Terra medium Release: 2026-10-26 GPT-6 Astra GPT-6 Astra low Release: 2026-09-04
Score 9.6 9.6
Rank #17 #14
Reliability 10.0 9.9
Consistency 9.4 10.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 91.3% 91.3%
Flaky tests 2 0
Total Runs 69 69
Cost per result 1.452 10.285
Total Cost $0.291 $2.160
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 167,830 159,023
Output Tokens 5,292 4,935
Reasoning Tokens 19,191 6,454
Response Time (avg) 7.99s 7.01s
Response Time (max) 44.91s 49.16s
Response Time (total) 183.79s 161.20s
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.

#17 GPT-6.1 Terra

medium
Cost
$0.018
Time
39.1s
Tokens
3,537 tok

#14 GPT-6 Astra

low
Invalid SVG
Cost
$0.151
Time
48.9s
Tokens
3,094 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 5.32s 7,302 387 2,250
GPT-6 Astra 10.0 10.0 100.0% 0 3.97s 7,302 388 976

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