DataRobot is an enterprise AI platform that provides centralized access to a wide range of LLMs through its AI Gateway. It emphasizes model governance, security, and unified billing for large-scale enterprise AI deployments.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Databricks Foundation Model Serving provides enterprise-grade access to open foundation models like Llama 3.3 and DBRX. It is billed per token using Databricks Units (DBUs), integrated into the broader Databricks Data Intelligence Platform.

No public free-tier information found (researched 2026-08-29).

Paste your userToken from chat.deepseek.com — DevTools → Application → Local Storage → userToken

No free tier — pay-as-you-go only.

long-running cloud coding agent. Devin API key for cloud agent sessions. 1 model tracked (curated from provider docs).

No free tier — pay-as-you-go only.

OAuth access — sign-in with your existing account. Requires the Devin CLI binary. Run `devin auth login` to authenticate, or provide your WINDSURF_API_KEY. Install: https://cli.devin.ai This entry is an access surface/agent — it routes to third-party models rather than hosting its own.

A free tier is available; the exact credit value is not quantified.

no-auth access — no key or sign-in required. Authentication is owned by the official Devin CLI in its isolated bridge volume. This entry is an access surface/agent — it routes to third-party models rather than hosting its own.

A free tier is available; the exact credit value is not quantified.

Cognition Devin CLI - terminal AI agent (devin) that routes to latest Anthropic/OpenAI/Google/Cognition models plus open-weight (DeepSeek, Kimi, GLM); short aliases (opus/sonnet/swe/codex/gpt/gemini); freemium via Devin plans; extra usage at model API pricing.

Usage allowances come from Devin plans; overage billed at model API pricing.

DigitalOcean Inference provides a unified control plane for AI model inference. It offers serverless access to foundation models (Anthropic, OpenAI, DeepSeek, Kimi) at provider-aligned rates, plus dedicated GPU deployments.

No public free-tier information found (researched 2026-08-29).

Dola (dola.com) — ByteDance's international AI chat assistant (international Doubao) serving the Doubao Seed model family. Unofficial browser/cookie integration.

A free tier is available; the exact credit value is not quantified.

Doubao (by Bytedance/Volcengine) provides a suite of models including the high-performance Doubao-Pro and Lite series. It is a major Chinese cloud provider with native API endpoints. Details were checked against the provider's own page at www.volcengine.com.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Duck.ai is DuckDuckGo's free, private AI chat (also surfaced at duckduckgo.com/duckchat). It requires no account and offers chat, voice, image, and search across models including OpenAI GPT (e.g., '5.6 Luna') and Claude.

Free anonymous chat; an 'Upgrade'/Pro option exists but pricing not quantified on fetched pages.

Empower provides an AI API router with an OpenAI-compatible endpoint. It focuses on bridging multiple model providers (Llama, etc.) through a single gateway for standard clients and SDKs. Details were checked against the provider's own page at docs.empower.dev.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Factory provides the 'Autonomy Stack' for enterprise engineering teams, featuring autonomous 'Droids' that code, review PRs, and manage wikis. It offers model routing across 200+ models. Details were checked against the provider's own page at factory.ai.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Fal.ai provides serverless inference and GPU compute for media generation models (Wan, Kling, Flux). It offers output-based pricing for image/video and time-based pricing for dedicated GPU fleets. Details were checked against the provider's own page at fal.ai.

No public free-tier information found (researched 2026-08-29).

Featherless AI provides serverless access to LLMs and agent runtimes. It offers subscription-based 'Chat' plans with unlimited tokens and credit-based 'Developer' plans for API usage. Details were checked against the provider's own page at featherless.ai.

Free tier available — no credit card required

Felo (felo.ai) is a free, no-signup multilingual AI search and creation platform for chat, web search, and content generation. It exposes frontier models (e.g., GPT-6 Astra) and offers a paid Pro tier for heavier usage.

Free no-signup tier; Pro subscription pricing not quantified on fetched pages.

FenayAI is an AI API router and aggregator providing unified access to major models like GPT-6 Astra and Claude Fable. It features an OpenAI-compatible gateway with BYOK support. Details were checked against the provider's own page at fenayai.com.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Free.ai is an AI tool aggregator offering 477+ tools across chat, image, and video. It provides 30,000 free tokens daily for registered users and supports premium models like GPT-6 and Claude via paid plans. The platform features an in-browser IDE for deploying AI applications.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

FreeAIAPIKey is a commercial aggregator that provides unified access to frontier models including GPT-5.1, Claude 4.5, and Gemini 3 at claimed discounts of 80% off official rates. It offers a single OpenAI-compatible endpoint for easy drop-in replacement.

No public free-tier information found (researched 2026-08-29).

FreeInference.org is a research-focused AI API gateway built at Harvard SEAS MadSys Lab. It provides free OpenAI-compatible access to frontier open models for the research and education community. No credit card is required for access.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Freebuff is a specialized AI API relay often associated with developer automation and coding tools. It provides programmatic access to high-end models for free or via community-shared keys, primarily aimed at script-based integration and tool builders.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

FriendliAI is a high-performance AI inference platform specializing in serving frontier open-weight models like GLM, DeepSeek, and Llama with industry-leading speed. It offers serverless Model APIs, dedicated GPU endpoints, and on-premise containers.

Free tier for serverless inference — no credit card required

Fuka API is a comprehensive AI API infrastructure provider offering a unified gateway to a vast selection of models via the New-API protocol. It supports high concurrency, transparent pay-as-you-go billing, and multi-protocol compatibility for developers and teams.

e7ai posts (2026-06/07): '芙芙卡' api.fuka.win gives signup credit ('注册就送100') + check-in; operator routerpark listing says '注册送150'. Amount/currency unverified; no free-priced models in /api/status.

BigModel.cn (智谱AI) is the official platform for GLM series models, offering high-performance text and multimodal (image/video) inference. It features flagship models like GLM-5.3 and provides a permanent free tier for Flash models along with significant token grants for new users.

No public free-tier information found (researched 2026-08-29).