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

Inkling (high) leads on average score with 8.4 vs 8.3. GPT-5.6 Terra (high) has the lower benchmark cost at $0.698 vs $1.238. GPT-5.6 Terra (high) is faster at 13.62s vs 62.72s, with pass rates of 69.6% vs 78.3%.

Last updated at: 2026-10-07

Compared models

Rank
#79
Total Output Tokens
60,065
Response Time (avg)
13.62s
Total Cost
$0.698
Rank
#75
Total Output Tokens
249,242
Response Time (avg)
62.72s
Total Cost
$1.238
Recommended model GPT-5.6 Terra (high)

Its score stays close to the best score here (8.3 vs 8.4), while costing about 1.8x less than Inkling (high).

Detailed comparison

Metric GPT-5.6 Terra GPT-5.6 Terra high Release: 2026-07-09 Inkling Inkling high Release: 2026-07-18 Free Available
Score 8.3 8.4
Rank #79 #75
Reliability 10.0 10.0
Consistency 9.4 9.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 69.6% 78.3%
Flaky tests 2 3
Total Runs 69 69
Cost per result 8.674 7.812
Total Cost $0.698 $1.238
Input Price $2.000 / 1M $0.950 / 1M
Output Price $12.000 / 1M $4.050 / 1M
Cache Read Price $0.200 / 1M $0.160 / 1M
Cache Write Price $2.500 / 1M N/A
Total Input Tokens 197,239 240,395
Output Tokens 6,083 7,169
Reasoning Tokens 53,982 242,073
Response Time (avg) 13.62s 62.72s
Response Time (max) 91.49s 327.51s
Response Time (total) 313.21s 1442.48s
Parameters ~1T total (~60B active) 975B total (41B active)
Availability Closed Open source

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.

#79 GPT-5.6 Terra

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

#75 Thinking Machines: Inkling

high
Cost
$0.005
Time
32.2s
Tokens
1,275 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 8.5 10.0 66.7% 0 148.36s 7,374 430 78,982

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