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Braintrust

Braintrust Data, Inc. · Prompting, evaluation & observability

Hosted observability and evaluation platform for AI agents with tracing, experiments, pattern detection, a CLI, MCP access and an AI assistant (Loop) that analyzes traces and builds evals

MixedFreemiumPaidNov 2, 2026

Cohere

Cohere Inc. · Model providers & APIs

Enterprise-focused model provider with Command generation, Embed and Rerank retrieval models, Aya multilingual research models, the North agent platform and private or dedicated deployment options

ProprietaryFreemiumUsage-basedSelf-hostedNov 2, 2026

Exa

Exa Labs · Search & web-data APIs

Search API for AI agents built on Exa's own web index, offering search, page contents, deep research and asynchronous agent endpoints with Python and JavaScript SDKs

ProprietaryFreemiumUsage-basedNov 2, 2026

Firecrawl

Firecrawl (formerly Mendable) · Data collection & crawling

In-depth entry

Web data API that scrapes, crawls, maps and searches websites and returns clean Markdown or structured JSON for LLM pipelines, with an AGPL-licensed self-hostable core

AGPL-3.0-onlyFreemiumPaidSelf-hostedNov 2, 2026

Gemini API

Google (Chrome DevTools team) · Model providers & APIs

Google's developer API for the Gemini model family, keyed from Google AI Studio, with function calling, Search grounding, Live API, image and video generation and a free tier

ProprietaryFreemiumUsage-basedNov 2, 2026

Google Cloud

Google (Chrome DevTools team) · Cloud & hosting providers

Google's public cloud with Compute Engine, GKE, Cloud Run, BigQuery, Cloud Storage and the Vertex AI platform for Gemini and other models

ProprietaryUsage-basedFreemiumNov 2, 2026

Langfuse

Langfuse (part of ClickHouse, Inc. since January 2026) · Prompting, evaluation & observability

In-depth entry

Open-source LLM observability and evaluation platform: tracing, LLM-as-judge and human evals, prompt management, datasets and cost dashboards, self-hostable or as Langfuse Cloud

MITOpen sourceFreemiumSelf-hostedNov 2, 2026

LangSmith

LangChain, Inc. · Prompting, evaluation & observability

LangChain's hosted platform for tracing, evaluating and deploying LLM applications and agents, with prompt tooling, an LLM gateway and cloud, hybrid or self-hosted options

ProprietaryFreemiumPaidSelf-hostedNov 2, 2026

LM Studio

Element Labs, Inc. · Local LLM inference & serving

In-depth entry

Proprietary desktop app for discovering, downloading and running local LLMs with llama.cpp and MLX engines, a chat UI, an OpenAI-compatible server, CLI, SDKs and a headless daemon

ProprietaryFreemiumPaidLocalBroken

Microsoft Azure

Microsoft · Cloud & hosting providers

Microsoft's public cloud with virtual machines, AKS, Azure Functions, Cosmos DB, Azure Database for PostgreSQL, Entra ID identity and Microsoft Foundry for hosted AI models

ProprietaryUsage-basedFreemiumNov 2, 2026

Mistral AI

Mistral AI · Model providers & APIs

French model provider offering open-weight and proprietary models through the Studio API, OCR and speech models, the Vibe agent for productivity and coding, and self-deployment options

MixedFreemiumUsage-basedSelf-hostedBroken

OpenRouter

OpenRouter, Inc. · Model providers & APIs

Unified API gateway to hundreds of models from many providers with automatic fallbacks, credit-based pass-through billing, BYOK, free models and data-policy routing

ProprietaryFreemiumUsage-basedBroken

Tavily

Tavily (Alpha AI Technologies Inc.) · Search & web-data APIs

In-depth entry

Web search, extraction, crawling and research API designed for LLM agents, returning concise source content with SDKs, framework integrations and a hosted MCP server

ProprietaryFreemiumUsage-basedNov 2, 2026

Weights & Biases

CoreWeave · Training & fine-tuning

ML experiment tracking, sweeps, artifacts and model registry plus Weave for LLM tracing and evaluation, now sold by CoreWeave within its Forge platform with a free academic tier

MITFreemiumPaidSelf-hostedBroken

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