Langfuse alternatives

Serverless GPU and compute platform for running ML and AI workloads.

freemiumfree tier ($30/mo compute); pay-as-you-go beyond

One API for every major model — unified billing, fallbacks and routing.

freemiumpay-per-token pass-through plus a small fee

Run any community model via API — pay per second, no GPU wrangling.

paidpay per run; image models from ~$0.003/image

Ultra-fast inference on custom LPU hardware — open models at 500+ tok/s.

freemiumfree tier; from $0.075/1M tokens (small models)

The GitHub of AI — models, datasets, Spaces and inference endpoints.

freemiumfree; PRO $9/mo; inference pay-as-you-go

Durable workflows and event-driven functions for serverless apps.

freemiumfree Hobby tier; Pro $99/mo

Cloud inference for open models — serverless endpoints and fine-tuning.

freemiumstarter credits; from $0.10/1M tokens (small open models)

Background jobs and workflows for TypeScript apps with AI-friendly primitives.

freemiumself-host free; cloud from $10/mo (Hobby)

TypeScript toolkit for AI apps — unified providers, streaming UI primitives.

freefree, open source

Open-source platform for self-hosting a full-stack vibe-coding environment on Cloudflare.

freeopen source (MIT); production previews require Cloudflare Workers Paid plan, Workers for Platforms, model API keys, and a custom domain/certs

Model serving and inference infrastructure for production ML.

paidusage-based; new accounts get free credits; enterprise plans support self-host

Fast inference platform for open models — serverless and on-demand GPUs.

freemium$1 starter credits; serverless from $0.10/1M tokens; on-demand GPU from $7/hr

Open-source OpenAI-compatible gateway — 100+ providers, spend keys, optional Enterprise license.

freemiumOSS proxy/SDK free (self-host); SSO free up to 5 users; Enterprise license is usage-quoted (30-day trial, no public $ table); 24/7 SLA extra

Drop-in long-term memory layer for AI agents and apps — open-source library plus managed cloud platform.

freemiumOpen-source library and self-hosted server are free; managed Hobby plan is free (10k add requests/mo), Starter $19/mo, Pro $249/mo, Enterprise custom.

Paste a Hugging Face model ID and get a living, animated architecture map without downloading weights.

free

Run open models locally (CLI, app, API) — optional Ollama Cloud Pro/Max for hosted large models.

freemiumlocal runtime $0 unlimited on your hardware; Cloud Free light usage; Pro $20/mo ($200/yr); Max $100/mo (new Max sign-ups paused)

Self-hosted chat UI for Ollama and OpenAI-compatible APIs — your models, your box.

freemiumself-host free (pip/docker); Enterprise SSO/RBAC/air-gap is a commercial SKU (talk to sales)

Package manager and registry for MCP servers, with dependency resolution and a local daemon.

freeMIT open source CLI; registry is free to use

Quantize any language model to fit your machine's actual VRAM, then serve it locally.

freeopen source; bring your own compute and API keys

Durable workflow orchestration engine, open-source and cloud-hosted, popular for reliable AI agent pipelines.

freemiumOpen-source self-hosted under MIT license is free; Temporal Cloud starts at $100/mo Essentials and offers $1,000 in free credits.

High-throughput OSS inference engine — PagedAttention, OpenAI-compatible server, you bring GPUs.

freeApache-licensed engine free; you pay GPUs/cloud; no vLLM seat fee

Open-source platform for AI application tracing, evaluation, prompt engineering, and experiments.

freemiumOpen-source self-host is free; Phoenix Cloud includes 2 free instances; Arize AX Pro is $50 per month; Enterprise is custom.

Active observability platform for instrumenting, understanding, and improving agents.

freemiumStarter is free with 1 GB processed data per month, 10,000 scored outputs per month, and 14-day retention; Pro is $249 per month; Enterprise is custom.

Instant, isolated cloud sandboxes for code execution, development environments, and AI-agent runtimes.

freemiumBuild plan is free with 5 members, 20 GB storage, 20 new SDK sandboxes per hour, and 10 concurrent VM sandboxes; Pro, Scale, and Enterprise are paid.

Programmable CI platform that replaces artisanal scripts with a portable DAG execution engine and language SDKs.

freemiumIndividual plan is free with 1 user and 1,000,000 events per month; Team is $50 per month after a 2-week trial; Enterprise is custom.

Secure, elastic infrastructure for running AI-generated code in isolated, stateful sandboxes.

freemiumPay-as-you-go compute with $200 in free credits at sign-up; vCPU $0.0504/h, memory $0.0162/h, storage $0.000108/h after first 5 GiB; startup credits up to $50,000.

Agent observability and evaluation platform for tracing, scoring, and iterating on production agents.

freemiumDeveloper plan is free with 10,000 events per month, up to 5 users, and 30-day retention; Enterprise is custom with self-host and hybrid options.

Open-source LLMOps platform for agent observability, evaluations, simulations, and prompt management.

freemiumDeveloper plan is free forever with 50,000 events per month, 14-day data access, and 2 users; Growth is $34 per core-seat per month; Enterprise is custom.

Open-source CLI and library for evaluating, benchmarking, and red-teaming LLM apps.

freemiumCommunity plan is free forever with all core evaluation features and 10,000 red-team probes per month; Enterprise and On-Premise are custom.

OpenTelemetry-native observability platform for traces, metrics, logs, and AI-agent telemetry.

freemiumSelf-hosted Community edition is free; SigNoz Cloud Teams starts at $49 per month with $49 of usage credit; Enterprise starts at $4,000 per month.

LLM reliability platform that monitors output quality, traces requests, and runs evaluations in CI.

freemiumFree forever for up to 50,000 spans per month and 5 seats; Enterprise is custom with on-premise and air-gapped deployment options.