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 (xhigh) at 246 t/s, against GPT-5.6 Terra (xhigh) at 85 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 v4.3.2 incorporates 10 evaluations: AA-Briefcase v1.1, GDPval-AA v2.1, 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 per Task (USD, Log Scale)

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 Indexes

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

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

Legal Index

Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, 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 v2.1, AA-Briefcase v1.1, 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 v2.1, AA-Briefcase v1.1, Terminal-Bench 4.0 · Higher is better

Economics Index

Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2.1, AA-Briefcase v1.1, 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
50
49
56
$1.60
$0.8
$1.25
$4.25
$0.15
$2,000
60k
34k
168M
221
20.98s
30.01s
32.27s
273.31s
-
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
246
23.47s
31.60s
33.63s
226.81s
-
1M
Sep 2026
-
Yes

Supports: text, image, and video

Supports: text

Not available
-
Meta
GPT-5.6 Terra (max)
OpenAI logoOpenAI
42
41
47
41
40
43
45
$1.40
$1.7
$2.00
$12.00
$0.20
$2,501
39k
26k
122M
85
213.78s
213.78s
219.67s
455.36s
-
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
85
34.50s
34.50s
40.38s
247.43s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAIMicrosoft Azure
GPT-5.6 Terra (high)
OpenAI logoOpenAI
34
37
40
37
34
34
42
$0.34
$1.7
$2.00
$12.00
$0.20
$768
11k
5k
33M
79
3.60s
3.60s
9.89s
139.02s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAIMicrosoft Azure
GPT-5.6 Terra (medium)
OpenAI logoOpenAI
30
32
34
34
31
31
37
$0.18
$1.7
$2.00
$12.00
$0.20
$447
5k
2k
17M
83
2.05s
2.05s
8.05s
66.35s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAI
GPT-5.6 Terra (low)
OpenAI logoOpenAI
27
30
31
31
27
28
34
$0.14
$1.7
$2.00
$12.00
$0.20
$350
4k
1k
11M
82
1.82s
1.82s
7.92s
48.85s
-
1M
Jul 2026
-
Yes

Supports: text and image

Supports: text

Not available
-
OpenAI
GPT-5.6 Terra (Non-reasoning)
OpenAI logoOpenAI
21
21
23
22
-
21
24
$0.14
$1.7
$2.00
$12.00
$0.20
$256
3k
0
6M
78
0.89s
0.89s
7.27s
39.86s
-
1M
Jul 2026
-
No

Supports: text and image

Supports: text

Not available
-
OpenAIAmazon Bedrock