Artificial intelligence (AI) stocks have driven the stock market higher, supercharging the bull market and leading the S&P 500 to its second consecutive year of double-digit gains. And this momentum is very likely to continue. That's because the AI growth story is in its early days -- the infrastructure build-out isn't over, and on top of this, the phase of applying AI to real world problems is just getting started. Analysts predict that today's $200 billion AI market will top $1 trillion by the end of the decade.

All of this means it's not too late to get in on AI stocks. and these players could boost your portfolio as soon as this year. But how do you choose these potential winners? Companies that play key roles in the AI build-out and have the ability to also benefit as the use of AI, e.g., through AI agents, takes off make perfect candidates. My prediction is these two AI stocks, ones that can excel throughout the AI growth story, will be the biggest winners of 2025. Let's check them out.

Image source: Getty Images.

1. Nvidia

I know what you're thinking: Nvidia (NVDA -3.09%) already has soared in this AI boom, so is this player really going to score yet another victory? It's true that this stock has climbed more than 800% over the past two years, but even considering that, the company today trades for only 30 times forward earnings estimates. This leaves plenty of room for growth, especially considering the company's position in the market.

Nvidia is the world's No. 1 AI chip designer, and the biggest tech companies flock to this player for its latest innovations. In fact, Nvidia has said multiple times in recent months that demand for its new Blackwell architecture -- released over the fiscal fourth-quarter (Q4) ending in January -- has surpassed supply. The company has used words including "insane" and "staggering" to describe the level of demand. All of this bodes well for Nvidia's revenue growth in the months to come, and this could power the shares higher this year. This is on top of an already strong earnings picture, with revenue and profit soaring in recent quarters.

Importantly, Nvidia has committed to ongoing innovation, promising to update its chips on an annual basis. This should make it very difficult for rivals to unseat this leader. As a result, Nvidia has what it takes to continue growing revenue over time. And this company isn't only relying on chips. It's developed an entire portfolio of products and services, so Nvidia should benefit from every stage of AI growth -- from the infrastructure build-out to the use of AI in our daily lives. All of this makes me optimistic about Nvidia's share performance potential this year and beyond.

2. Amazon

You may associate Amazon (AMZN -1.79%) more with your shopping list than with AI innovation, but this company actually is one of today's biggest AI winners. Amazon benefits from AI through both its e-commerce business and its cloud computing unit, Amazon Web Services (AWS).

In e-commerce, Amazon uses AI to streamline its operations and better serve its customers. For example, it uses the technology to predict consumer demand for certain products and design the best delivery routes. This helps Amazon gain in efficiency and therefore lower costs.

But where Amazon really is hitting it out of the park is in the cloud business. AWS offers a broad range of AI products and services, from premium chips from Nvidia and its own in-house designed chips for cost-conscious customers to a fully managed service that offers customers access to popular large language models (LLMs) to tailor to their own needs. Through AWS, customers also can build their own AI agents, or software that can reason and apply solutions to real world problems. This could help Amazon excel during the next wave of AI growth, as businesses actually put AI into action.

AWS' AI tools and services already have generated significant growth for the company, with the unit reaching a $115 billion annual revenue run rate last year. And since AWS is the biggest contributor to Amazon's overall profit, this is extremely positive.

Now, let's consider Amazon's valuation. The stock is trading for about 34 times forward earnings estimates right now, down from more than 45 times just a few months ago. In light of Amazon's already proven strengths in AI and the potential for long-term growth as AI continues to develop, this level looks dirt cheap. And that's why I predict Amazon may be one of the biggest AI winners of 2025.