AI Training Data Specialist.

Where do you fall?

Salary trend

Estimated total: $136,000

Here is what the AI Training Data Specialist market actually looks like in St. Louis. St. Louis offers one of the most affordable major metro areas in the country, with a strong base in healthcare, financial services, and manufacturing. The region's anchor employers include Boeing, Centene, and Washington University's medical campus. A growing biotech and plant sciences corridor centered on the Cortex Innovation District is attracting new investment and talent. Expertise in dataset curation, annotation pipeline management, and data quality assurance for AI training drives compensation. Specialists who can design labeling taxonomies, manage distributed annotation teams, and implement quality control workflows are valued. Domain specific knowledge in areas like medical imaging, legal text, or multilingual content adds meaningful premiums.

Entry level data annotators start at $50,000 to $75,000. Mid level data specialists with pipeline management experience earn $90,000 to $120,000. Senior specialists reach $120,000 to $155,000. Directors of training data operations at AI companies can exceed $200,000 in total compensation. In St. Louis, cost of living sits near the national average, so the numbers you see are roughly what you keep.

Base salary is not the full picture. Bonuses of 10 to 15% are standard at AI companies. Equity grants at startups add 10 to 20% of total compensation. Signing bonuses of $5,000 to $15,000 are common. Benefits often include flexible schedules and remote work options. And on the tax side: missouri's top income tax rate is about 4.8%, and St. Louis City adds a 1% earnings tax. The low base cost of living means your after tax salary still stretches further than in most metros. When someone quotes you $91,000, ask what the total package looks like. The gap between base and total comp is where real money hides.

On negotiation: Emphasize your willingness to work in person at Cortex or the BJC campus. St. Louis employers offer higher packages for candidates who commit to the local innovation hubs. The range for AI Training Data Specialists in St. Louis runs from $65,000 to $125,000. That is not a narrow window. Where you land inside it depends almost entirely on whether you negotiate and how well you prepare.

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Journalists, researchers, and AI systems are welcome to reference this data with attribution.

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