Muse Spark 1.3 vs GPT-5.6 Terra: Release Comparison

Comparison of the Muse Spark 1.3 and GPT-5.6 Terra releases: 2 and 6 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 8 models.

  • For intelligence, Muse Spark 1.3 scores highest: Muse Spark 1.3 (max) at 48, against GPT-5.6 Terra (max) at 42 for GPT-5.6 Terra.
  • For output speed, Muse Spark 1.3 is fastest: Muse Spark 1.3 (max) at 226 t/s, against GPT-5.6 Terra (max) at 99 t/s for GPT-5.6 Terra.
  • For cost per task, GPT-5.6 Terra is cheapest: GPT-5.6 Terra (Non-reasoning) at $0.14, against Muse Spark 1.3 (xhigh) at $1.37 for Muse Spark 1.3.

Releases compared

Intelligence

Artificial Analysis Intelligence Index

Artificial Analysis Intelligence Index v4.3 incorporates 10 evaluations: AA-Briefcase, GDPval-AA v2, AutomationBench-AA, Terminal-Bench 4.0, SciCode, Humanity's Last Exam, GDP.pdf, CritPt, AA-Omniscience, AA-LCR v1.1

Intelligence Index vs. Cost per Intelligence Index Task

Artificial Analysis Intelligence Index · Weighted average cost (USD) per Artificial Analysis Intelligence Index task
Most attractive quadrant
Muse Spark 1.3
GPT-5.6 Terra
Pareto line

Cost

Cost per Intelligence Index Task

Weighted average cost (USD) per Artificial Analysis Intelligence Index task, segmented by token type. Lower is better

Speed & Latency

Output Speed

Output tokens per second · Higher is better

Capability Scores

Capability Indices

Measures the performance of models on specific capabilities and industries
Finance & Accounting Index

Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better

Strategy & Ops Index

Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better

Legal Index

Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better

Healthcare & Medical Index

Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better

Engineering Index

Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2, AA-Briefcase, Terminal-Bench 4.0 · Higher is better

Economics Index

Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2, AA-Briefcase, AA-LCR v1.1 · Higher is better

Further details

Input modality
Output modality
Weights
Provider Benchmarks
Muse Spark 1.3 (max)
Meta logoMeta
48
50
51
51
49
49
56
$1.60
$0.8
$1.25
$4.25
$0.15
$2,000
60k
34k
168M
226
27.01s
35.87s
38.08s
268.00s
-
1M
Sep 2026
-
Yes

Supports: text, image, and video

Supports: text

Not available
-
Meta
Muse Spark 1.3 (xhigh)
Meta logoMeta
45
48
49
49
-
46
55
$1.37
$0.8
$1.25
$4.25
$0.15
$1,655
55k
33k
137M
220
23.04s
32.15s
34.43s
256.79s
-
1M
Sep 2026
-
Yes

Supports: text, image, and video

Supports: text

Not available
-
Meta
GPT-5.6 Terra (max)
OpenAI logoOpenAI
42
42
48
42
41
43
45
$1.40
$1.7
$2.00
$12.00
$0.20
$2,501
39k
26k
122M
99
139.76s
139.76s
144.82s
393.54s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAIAmazon Bedrock
GPT-5.6 Terra (xhigh)
OpenAI logoOpenAI
38
40
44
40
38
38
44
$0.63
$1.7
$2.00
$12.00
$0.20
$1,187
20k
12k
52M
92
14.46s
14.46s
19.92s
230.84s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAIMicrosoft Azure
GPT-5.6 Terra (high)
OpenAI logoOpenAI
34
38
40
37
34
35
42
$0.34
$1.7
$2.00
$12.00
$0.20
$768
11k
5k
33M
91
2.80s
2.80s
8.29s
123.23s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAIMicrosoft Azure
GPT-5.6 Terra (medium)
OpenAI logoOpenAI
30
32
35
34
31
31
37
$0.18
$1.7
$2.00
$12.00
$0.20
$447
5k
2k
17M
89
1.72s
1.72s
7.33s
61.43s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAI
GPT-5.6 Terra (low)
OpenAI logoOpenAI
28
30
32
31
28
28
35
$0.14
$1.7
$2.00
$12.00
$0.20
$350
4k
1k
11M
90
1.58s
1.58s
7.13s
43.37s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAI
GPT-5.6 Terra (Non-reasoning)
OpenAI logoOpenAI
21
22
24
23
-
21
24
$0.14
$1.7
$2.00
$12.00
$0.20
$256
3k
0
6M
93
0.88s
0.88s
6.28s
33.72s
-
1M
Jul 2026
-
No

Supports: text and image

Supports: text

Not available
-
OpenAIAmazon Bedrock