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GPT-5.6 Terra (high) vs Inkling (medium)

The average score is effectively tied at 8.0 vs 8.0. Inkling (medium) has the lower benchmark cost at $0.377 vs $0.836. GPT-5.6 Terra (high) is faster at 11.22s vs 15.66s, with pass rates of 68.2% vs 75.8%.

Last updated at: 2026-08-29

Rank
#58
Total Output Tokens
56,088
Response Time (avg)
11.22s
Total Cost
$0.836
Rank
#57
Total Output Tokens
63,842
Response Time (avg)
15.66s
Total Cost
$0.377
Recommended model Inkling (medium)

It has the best score here (8.0), while costing about 2.2x less than GPT-5.6 Terra (high).

Detailed comparison

Metric GPT-5.6 Terra GPT-5.6 Terra high Release: 2026-07-09 Inkling Inkling medium Release: 2026-07-18
Score 8.0 8.0
Rank #58 #57
Reliability 10.0 10.0
Consistency 9.3 8.5
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 68.2% 75.8%
Flaky tests 2 4
Total Runs 66 66
Cost per result 7.293 2.551
Total Cost $0.836 $0.377
Input Price $2.000 / 1M $0.950 / 1M
Output Price $12.000 / 1M $4.050 / 1M
Total Input Tokens 81,056 124,062
Output Tokens 5,055 12,190
Reasoning Tokens 51,033 51,652
Response Time (avg) 11.22s 15.66s
Response Time (max) 91.49s 85.12s
Response Time (total) 246.77s 344.52s
Parameters ~1T total (~60B active) 975B total (41B active)
Availability Closed Open source

Model generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#58 GPT-5.6 Terra

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

#57 Thinking Machines: Inkling

medium
Cost
$0.004
Time
11.2s
Tokens
852 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
Inkling 8.4 7.8 77.8% 1 25.20s 7,374 525 14,457

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