Developer tools and infrastructure on .ai

APIs, inference platforms, compute and tooling that developers build AI products on. 49 companies so far, most recently active first.

This is the layer other AI products are built on: APIs that route requests between models, inference platforms, GPU marketplaces, search APIs for agents, and evaluation tools. Most of these companies sell to developers rather than consumers, so their launches tend to be new models supported, lower prices or new capabilities in their APIs. Each page tracks those launches, funding and the domain record.

agentops.ai AgentOps · Trace and debug AI agents Documents tracing across agent frameworks and model providers. 9 Nov 2026 cleanlab.ai Cleanlab · Catch incorrect AI answers Describes a product for remediating incorrect agent responses. 9 Nov 2026 honeyhive.ai HoneyHive · Trace and evaluate AI apps Offers agent tracing and evaluation tools on honeyhive.ai. 9 Nov 2026 landing.ai LandingAI · Extract data from documents Documents its document-extraction API platform on landing.ai. 9 Nov 2026 marqo.ai Marqo · Commerce product discovery Documents its product-discovery platform and developer tools. 9 Nov 2026 outlier.ai Outlier AI · Expert input for AI training Documents its expert-contributor platform for AI training. 9 Nov 2026 surge.ai Surge AI · Data for AI model development Presents AI training-data and evaluation services on surge.ai. 9 Nov 2026 flymy.ai FlyMy.AI · Run cloud agent workflows Released version 1.35.0 with changes to helper cancellation and search results. 8 Nov 2026 crusoe.ai Crusoe · Cloud compute for AI Added Kubernetes control-plane logs and telemetry forwarding. 6 Nov 2026 msty.ai Msty · Desktop AI workspace Released Msty Studio 3.0 with redesigned workspaces. 5 Nov 2026 patronus.ai Patronus AI · Agent evaluation and simulation Introduced GlobeBench to test text-based world models. 5 Nov 2026 lambda.ai Lambda · GPU cloud for model development Launched role-based identity and access controls for Lambda Cloud. 4 Nov 2026 novita.ai Novita AI · Model inference cloud Made Tencent HY4 available through its inference platform. 4 Nov 2026 bonnard.ai Bonnard · Connect agents to business data Added a draft-editing control for table visibility. 3 Nov 2026 recall.ai Recall.ai · Capture meeting media through an API Adds Windows support for Slack Huddles to its desktop SDK in version 2.0.43. 3 Nov 2026 sambanova.ai SambaNova · AI inference systems Announced a Supermicro agreement for SambaNova-powered inference systems. 3 Nov 2026 supermemory.ai Supermemory · Memory for AI agents Published a Grok Bot integration that uses Supermemory as a participant in conversations. 3 Nov 2026 fireworks.ai Fireworks AI · Model inference and deployment platform Makes Kimi K3.1 Pro available at launch on serverless and dedicated deployments. Nov 2026 openrouter.ai OpenRouter · One API for AI models and providers Stripe acquisition agreed Launches a rebuilt Auto Router and an Auto Code router specialized for coding requests. Nov 2026 hyperbolic.ai Hyperbolic · GPU and inference cloud Announced a $30 million Series A1 financing. 27 Oct 2026 jan.ai Jan · Open-source local AI Released Jan 0.8.8 with security changes and an updated local model engine. 27 Oct 2026 primeintellect.ai Prime Intellect · Model training and inference Added training overview metrics and persistent chart pins. 23 Oct 2026 cerebras.ai Cerebras · Wafer-scale AI compute Published details of serving trillion-parameter models on Cerebras systems. 22 Oct 2026 llamaindex.ai LlamaIndex · Build agents over business data Announces OCRia-1, a model for parsing documents into usable text and structure. 22 Oct 2026 lakera.ai Lakera · AI security testing Updated its Red Teaming SDK with agent threat modeling. 19 Oct 2026 featherless.ai Featherless · Open-model inference Added Step 5 Preview to its hosted model selection. 15 Oct 2026 friendli.ai FriendliAI · Model serving platform Announced a partnership with Ollama. 15 Oct 2026 micro1.ai micro1 · AI evaluation and talent Introduced CortexRetrievalBench for financial-document retrieval. 15 Oct 2026 upstage.ai Upstage · Language and document AI Launched Upstage Studio for turning extracted document data into business actions. 6 Oct 2026 artificialanalysis.ai Artificial Analysis · Independent model and API benchmarks Releases Intelligence Index v5 with new and revised evaluations. Oct 2026 opengeni.ai Opengeni · Cloud computers and integrations for AI agents Launches agent infrastructure with persistent sessions, sandboxes, integrations and human approvals. Oct 2026 together.ai Together AI · Cloud platform for open models Makes Muse Spark Open available through serverless and dedicated inference. Oct 2026 vllm.ai vLLM · Open source model serving engine Documents throughput improvements for serving DeepSeek-V4.1-Flash. Oct 2026 langwatch.ai LangWatch · LLM evaluation and observability Introduced Instant Evals for evaluating AI outputs. 22 Sep 2026 giskard.ai Giskard · AI testing and red teaming Updated Giskard Hub 3 with unified checks and improved dataset imports. 15 Sep 2026 orq.ai Orq · AI application platform Introduced a CLI for managing deployments, traces, datasets and evaluators. 7 Sep 2026 coval.ai Coval · Voice agent testing Described a self-improving voice-agent workflow built with Phonely. 1 Sep 2026 humalike.ai Humalike · Social behavior tools for AI agents Launches AI NPCs designed to talk, remember and act in game-like settings. Sep 2026 milliseconds.ai Milliseconds.ai · An API for small, structured AI decisions Introduces a small-model API for classifying text and images and returning structured decisions. Sep 2026 vast.ai Vast.ai · Marketplace for GPU compute Adds B200 capacity, model templates and webhook notifications. Aug 2026 deepset.ai deepset · Haystack and enterprise agents Released Haystack 3.0 with agent hooks and skills. 20 Jul 2026 lmstudio.ai LM Studio · Run open models on a computer Introduces Bionic, an agent for working with open models. Jul 2026 mem0.ai Mem0 · Memory for AI agents Published a Mem0 plugin for Pi Code. 24 Jun 2026 portkey.ai Portkey · AI gateway and controls Added a Hermes Agent integration through its gateway. 29 Apr 2026 galileo.ai Galileo · Evaluate and observe agents Announced Autotune for improving AI-system behavior with evaluation feedback. 2 Apr 2026 fal.ai fal · APIs for generative media models Adds Nemotron 3 Nano Omni to its hosted model catalog. Apr 2026 litellm.ai LiteLLM · LLM gateway and proxy Published a second version of its CI/CD workflow. 30 Mar 2026 useforge.ai Forge · Run portable AI agents Adds embedded code-review skills for diffs, files and GitHub pull requests in version 0.6.0. 3 Mar 2026 exa.ai Exa · Web search built for AI On record since Dec 2017 or earlier · expires Jan 2036

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