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Side-by-side financial comparison of NATURAL GAS SERVICES GROUP INC (NGS) and SOUNDHOUND AI, INC. (SOUN). Click either name above to swap in a different company.

SOUNDHOUND AI, INC. is the larger business by last-quarter revenue ($55.1M vs $46.1M, roughly 1.2× NATURAL GAS SERVICES GROUP INC). SOUNDHOUND AI, INC. runs the higher net margin — 72.8% vs 8.9%, a 63.9% gap on every dollar of revenue. On growth, SOUNDHOUND AI, INC. posted the faster year-over-year revenue change (59.4% vs 13.5%). NATURAL GAS SERVICES GROUP INC produced more free cash flow last quarter ($-20.7M vs $-22.3M).

Southern Company Gas, formerly AGL Resources, is an American Fortune 500 energy services holding company headquartered in Atlanta, Georgia. The company's operations consist of natural gas distribution, wholesale services, retail operations, and midstream operations. Southern Company Gas is one of the largest natural gas distribution companies in the United States. The company serves approximately 4.5 million utility customers through its regulated distribution subsidiaries across four states....

SoundHound AI, Inc. is an American music and speech recognition company based in Santa Clara, California. It was originally founded as Melodis in 2005 before rebranding to SoundHound Inc. in 2010, and SoundHound AI in 2022.

NGS vs SOUN — Head-to-Head

Bigger by revenue
SOUN
SOUN
1.2× larger
SOUN
$55.1M
$46.1M
NGS
Growing faster (revenue YoY)
SOUN
SOUN
+45.9% gap
SOUN
59.4%
13.5%
NGS
Higher net margin
SOUN
SOUN
63.9% more per $
SOUN
72.8%
8.9%
NGS
More free cash flow
NGS
NGS
$1.6M more FCF
NGS
$-20.7M
$-22.3M
SOUN

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
NGS
NGS
SOUN
SOUN
Revenue
$46.1M
$55.1M
Net Profit
$4.1M
$40.1M
Gross Margin
47.9%
Operating Margin
15.4%
77.3%
Net Margin
8.9%
72.8%
Revenue YoY
13.5%
59.4%
Net Profit YoY
43.2%
115.5%
EPS (diluted)
$0.32
$-0.13

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
NGS
NGS
SOUN
SOUN
Q4 25
$46.1M
$55.1M
Q3 25
$43.4M
$42.0M
Q2 25
$41.4M
$42.7M
Q1 25
$41.4M
$29.1M
Q4 24
$40.7M
$34.5M
Q3 24
$25.1M
Q2 24
$13.5M
Q1 24
$11.6M
Net Profit
NGS
NGS
SOUN
SOUN
Q4 25
$4.1M
$40.1M
Q3 25
$5.8M
$-109.3M
Q2 25
$5.2M
$-74.7M
Q1 25
$4.9M
$129.9M
Q4 24
$2.9M
$-258.6M
Q3 24
$-21.8M
Q2 24
$-37.3M
Q1 24
$-33.0M
Gross Margin
NGS
NGS
SOUN
SOUN
Q4 25
47.9%
Q3 25
42.6%
Q2 25
39.0%
Q1 25
36.5%
Q4 24
39.9%
Q3 24
48.6%
Q2 24
63.0%
Q1 24
59.7%
Operating Margin
NGS
NGS
SOUN
SOUN
Q4 25
15.4%
77.3%
Q3 25
24.8%
-275.6%
Q2 25
24.0%
-182.9%
Q1 25
23.0%
Q4 24
14.9%
-744.2%
Q3 24
-134.6%
Q2 24
-163.3%
Q1 24
-246.1%
Net Margin
NGS
NGS
SOUN
SOUN
Q4 25
8.9%
72.8%
Q3 25
13.3%
-259.9%
Q2 25
12.5%
-175.1%
Q1 25
11.7%
446.1%
Q4 24
7.0%
-748.6%
Q3 24
-86.7%
Q2 24
-277.2%
Q1 24
-284.7%
EPS (diluted)
NGS
NGS
SOUN
SOUN
Q4 25
$0.32
$-0.13
Q3 25
$0.46
$-0.27
Q2 25
$0.41
$-0.19
Q1 25
$0.38
$0.31
Q4 24
$0.22
$-0.75
Q3 24
$-0.06
Q2 24
$-0.11
Q1 24
$-0.12

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
NGS
NGS
SOUN
SOUN
Cash + ST InvestmentsLiquidity on hand
$248.5M
Total DebtLower is stronger
Stockholders' EquityBook value
$274.7M
$463.8M
Total Assets
$586.8M
$688.2M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
NGS
NGS
SOUN
SOUN
Q4 25
$248.5M
Q3 25
$268.9M
Q2 25
$325.0K
$230.3M
Q1 25
$2.1M
$245.8M
Q4 24
$2.1M
$198.2M
Q3 24
$135.6M
Q2 24
$200.2M
Q1 24
$211.7M
Total Debt
NGS
NGS
SOUN
SOUN
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
$0
Q3 24
Q2 24
Q1 24
$85.5M
Stockholders' Equity
NGS
NGS
SOUN
SOUN
Q4 25
$274.7M
$463.8M
Q3 25
$271.4M
$399.2M
Q2 25
$266.2M
$359.8M
Q1 25
$260.3M
$397.0M
Q4 24
$255.1M
$182.7M
Q3 24
$296.0M
Q2 24
$223.9M
Q1 24
$155.5M
Total Assets
NGS
NGS
SOUN
SOUN
Q4 25
$586.8M
$688.2M
Q3 25
$562.3M
$702.2M
Q2 25
$525.5M
$579.5M
Q1 25
$501.7M
$587.5M
Q4 24
$492.5M
$554.0M
Q3 24
$499.7M
Q2 24
$266.7M
Q1 24
$287.4M
Debt / Equity
NGS
NGS
SOUN
SOUN
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
0.00×
Q3 24
Q2 24
Q1 24
0.55×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
NGS
NGS
SOUN
SOUN
Operating Cash FlowLast quarter
$13.9M
$-21.9M
Free Cash FlowOCF − Capex
$-20.7M
$-22.3M
FCF MarginFCF / Revenue
-44.8%
-40.4%
Capex IntensityCapex / Revenue
74.9%
0.7%
Cash ConversionOCF / Net Profit
3.38×
-0.55×
TTM Free Cash FlowTrailing 4 quarters
$-58.6M
$-99.1M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
NGS
NGS
SOUN
SOUN
Q4 25
$13.9M
$-21.9M
Q3 25
$16.8M
$-32.7M
Q2 25
$11.0M
$-24.5M
Q1 25
$21.3M
$-19.2M
Q4 24
$9.4M
$-33.1M
Q3 24
$-35.3M
Q2 24
$-18.5M
Q1 24
$-21.9M
Free Cash Flow
NGS
NGS
SOUN
SOUN
Q4 25
$-20.7M
$-22.3M
Q3 25
$-25.1M
$-32.8M
Q2 25
$-14.8M
$-24.7M
Q1 25
$2.0M
$-19.3M
Q4 24
$-5.1M
$-33.2M
Q3 24
$-35.5M
Q2 24
$-18.7M
Q1 24
$-22.0M
FCF Margin
NGS
NGS
SOUN
SOUN
Q4 25
-44.8%
-40.4%
Q3 25
-57.7%
-78.1%
Q2 25
-35.8%
-57.8%
Q1 25
4.9%
-66.4%
Q4 24
-12.6%
-96.1%
Q3 24
-141.6%
Q2 24
-139.1%
Q1 24
-190.2%
Capex Intensity
NGS
NGS
SOUN
SOUN
Q4 25
74.9%
0.7%
Q3 25
96.5%
0.4%
Q2 25
62.4%
0.4%
Q1 25
46.5%
0.6%
Q4 24
35.8%
0.2%
Q3 24
0.9%
Q2 24
1.8%
Q1 24
0.9%
Cash Conversion
NGS
NGS
SOUN
SOUN
Q4 25
3.38×
-0.55×
Q3 25
2.90×
Q2 25
2.12×
Q1 25
4.38×
-0.15×
Q4 24
3.29×
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

NGS
NGS

Segment breakdown not available.

SOUN
SOUN

Hosted Services$37.7M68%
Licensing$12.6M23%
Professional Service$4.6M8%

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