Best LLM API Providers for Claude Sonnet 4

Find and compare the best LLM API providers for Claude Sonnet 4 in 2025

Use the comparison tool below to compare the top LLM API providers for Claude Sonnet 4 on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    Vertex AI Reviews

    Vertex AI

    Google

    Free ($300 in free credits)
    726 Ratings
    See Provider
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    Fully managed ML tools allow you to build, deploy and scale machine-learning (ML) models quickly, for any use case. Vertex AI Workbench is natively integrated with BigQuery Dataproc and Spark. You can use BigQuery to create and execute machine-learning models in BigQuery by using standard SQL queries and spreadsheets or you can export datasets directly from BigQuery into Vertex AI Workbench to run your models there. Vertex Data Labeling can be used to create highly accurate labels for data collection. Vertex AI Agent Builder empowers developers to design and deploy advanced generative AI applications for enterprise use. It supports both no-code and code-driven development, enabling users to create AI agents through natural language prompts or by integrating with frameworks like LangChain and LlamaIndex.
  • 2
    Snowflake Reviews

    Snowflake

    Snowflake

    $2 compute/month
    4 Ratings
    Snowflake offers a unified AI Data Cloud platform that transforms how businesses store, analyze, and leverage data by eliminating silos and simplifying architectures. It features interoperable storage that enables seamless access to diverse datasets at massive scale, along with an elastic compute engine that delivers leading performance for a wide range of workloads. Snowflake Cortex AI integrates secure access to cutting-edge large language models and AI services, empowering enterprises to accelerate AI-driven insights. The platform’s cloud services automate and streamline resource management, reducing complexity and cost. Snowflake also offers Snowgrid, which securely connects data and applications across multiple regions and cloud providers for a consistent experience. Their Horizon Catalog provides built-in governance to manage security, privacy, compliance, and access control. Snowflake Marketplace connects users to critical business data and apps to foster collaboration within the AI Data Cloud network. Serving over 11,000 customers worldwide, Snowflake supports industries from healthcare and finance to retail and telecom.
  • 3
    Claude Reviews
    Claude represents a sophisticated artificial intelligence language model capable of understanding and producing text that resembles human communication. Anthropic is an organization dedicated to AI safety and research, aiming to develop AI systems that are not only dependable and understandable but also controllable. While contemporary large-scale AI systems offer considerable advantages, they also present challenges such as unpredictability and lack of transparency; thus, our mission is to address these concerns. Currently, our primary emphasis lies in advancing research to tackle these issues effectively; however, we anticipate numerous opportunities in the future where our efforts could yield both commercial value and societal benefits. As we continue our journey, we remain committed to enhancing the safety and usability of AI technologies.
  • 4
    Snowflake Cortex AI Reviews

    Snowflake Cortex AI

    Snowflake

    $2 per month
    Snowflake Cortex AI is a serverless, fully managed platform designed for organizations to leverage unstructured data and develop generative AI applications within the Snowflake framework. This innovative platform provides access to top-tier large language models (LLMs) such as Meta's Llama 3 and 4, Mistral, and Reka-Core, making it easier to perform various tasks, including text summarization, sentiment analysis, translation, and answering questions. Additionally, Cortex AI features Retrieval-Augmented Generation (RAG) and text-to-SQL capabilities, enabling users to efficiently query both structured and unstructured data. Among its key offerings are Cortex Analyst, which allows business users to engage with data through natural language; Cortex Search, a versatile hybrid search engine that combines vector and keyword search for document retrieval; and Cortex Fine-Tuning, which provides the ability to tailor LLMs to meet specific application needs. Furthermore, this platform empowers organizations to harness the power of AI while simplifying complex data interactions.
  • 5
    Amazon Bedrock Reviews
    Amazon Bedrock is a comprehensive service that streamlines the development and expansion of generative AI applications by offering access to a diverse range of high-performance foundation models (FMs) from top AI organizations, including AI21 Labs, Anthropic, Cohere, Meta, Mistral AI, Stability AI, and Amazon. Utilizing a unified API, developers have the opportunity to explore these models, personalize them through methods such as fine-tuning and Retrieval Augmented Generation (RAG), and build agents that can engage with various enterprise systems and data sources. As a serverless solution, Amazon Bedrock removes the complexities associated with infrastructure management, enabling the effortless incorporation of generative AI functionalities into applications while prioritizing security, privacy, and ethical AI practices. This service empowers developers to innovate rapidly, ultimately enhancing the capabilities of their applications and fostering a more dynamic tech ecosystem.
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