AI Trainer / RLHF Specialist.

Where do you fall?

Salary trend

Estimated total: $155,000

If you are interviewing for AI Trainer / RLHF Specialist roles in St. Louis, here is what you are walking into. 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 reinforcement learning from human feedback, preference labeling, and reward model calibration drives pay. Specialists who can evaluate model outputs across technical and creative domains command premiums. Experience with red teaming, adversarial prompting, and alignment research at frontier labs significantly increases compensation. Linguistics or domain expertise adds further value.

Entry level RLHF annotators start at $65,000 to $90,000. Mid level trainers with evaluation expertise earn $110,000 to $145,000. Senior specialists managing training pipelines reach $150,000 to $185,000. Leads overseeing alignment programs at top labs can exceed $220,000 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 20% are common at AI labs. Equity grants at startups can add 15 to 30% of total compensation. Signing bonuses of $10,000 to $30,000 are typical. Benefits often include flexible schedules and research publication opportunities. 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 $104,000, 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 Trainer / RLHF Specialists in St. Louis runs from $73,000 to $143,000. 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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Enter your AI Trainer / RLHF Specialist offer to see where you stand in St. Louis.

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