GPT-5.6 Terra vs GPT-5 Nano (medium)

Compared models

Recommended model GPT-5.6 Terra

It has the best score here (5.8), while responding about 13.8x faster than GPT-5 Nano (medium).

Metric	GPT-5.6 Terra GPT-5.6 Terra none Release: 2026-07-09	GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07

Metric	GPT-5.6 Terra GPT-5.6 Terra none Release: 2026-07-09	GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07
Score	5.8	5.7
Rank	#255	#260
Reliability	10.0	10.0
Consistency	9.0	6.5
Attempts	69/69	69/69
Tests Correct
Attempt pass rate	40.6%	53.6%
Flaky tests	3	10
Total Runs	69	69
Cost per result	7.313	1.737
Total Cost	$0.377	$0.159
Input Price	$2.000 / 1M	$0.050 / 1M
Output Price	$12.000 / 1M	$0.400 / 1M
Cache Read Price	$0.200 / 1M	$0.005 / 1M
Cache Write Price	$2.500 / 1M	N/A
Total Input Tokens	213,564	314,436
Output Tokens	7,381	13,578
Reasoning Tokens	0	294,343
Response Time (avg)	4.11s	56.55s
Response Time (max)	57.98s	227.89s
Response Time (total)	94.52s	961.32s
Parameters	~1T total (~60B active)	~120B total (~5B 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.

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

none

medium

Category:

Agentic	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	5.0	10.0	0.0%	0		57.98s	111,296	1,160	0
GPT-5 Nano	4.7	3.1	33.3%	1		94.09s	219,492	1,541	23,943

Anti-AI Tricks	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	4.8	10.0	25.0%	0		942ms	606	191	0
GPT-5 Nano	6.5	7.9	58.3%	1		25.50s	606	1,221	21,184

Coding	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	5.5	10.0	33.3%	0		1.00s	7,302	336	0
GPT-5 Nano	7.0	7.7	55.6%	1		41.62s	7,305	740	41,152

Combined	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	2.9	5.8	16.7%	1		7.02s	77,668	4,580	0
GPT-5 Nano	6.4	5.8	66.7%	1		146.93s	71,846	7,156	86,976

Data parsing and extraction	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	10.0	10.0	100.0%	0		1.13s	7,140	222	0
GPT-5 Nano	3.7	1.7	50.0%	2		21.42s	7,140	453	10,560

Domain specific	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	5.3	7.2	44.4%	1		843ms	732	86	0
GPT-5 Nano	3.4	1.6	44.4%	3		124.13s	628	232	73,792

General Intelligence	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	5.0	10.0	0.0%	0		1.03s	477	102	0
GPT-5 Nano	4.1	10.0	0.0%	0		17.51s	477	202	4,608

Instructions following	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	8.5	6.8	83.3%	1		1.15s	660	101	0
GPT-5 Nano	9.8	10.0	100.0%	0		15.64s	660	312	4,736

Puzzle Solving	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	5.3	10.0	33.3%	0		1.23s	642	235	0
GPT-5 Nano	5.3	7.2	44.4%	1		20.63s	642	929	14,272

Tool Calling	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	9.6	10.0	100.0%	0		3.10s	6,846	344	0
GPT-5 Nano	10.0	10.0	100.0%	0		33.30s	5,445	558	6,976

Trivia	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.6 Terra	3.0	10.0	0.0%	0		787ms	195	24	0
GPT-5 Nano	3.0	10.0	0.0%	0		20.13s	195	234	6,144

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