AI API Router Directory

Void AI is an AI API aggregator compatible with the OpenAI SDK. It uses a credit-based billing system where model costs are calculated using multipliers (e.g., GPT-5.1 is 0.75, GPT-4o is 1.25). Offers both flat-rate plans and usage-based top-ups.

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

Volcengine is ByteDance's enterprise cloud platform. Its Ark (Huoshan Fangzhou) platform provides access to the Doubao (Doubao) model family and other high-performance LLMs. Supports OpenAI-compatible API calls and various billing plans including token-based monthly packages.

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

The Volcengine Ark Agent Plan is a subscription-based billing option for the Ark platform, offering monthly token quotas for Doubao and other models. It is designed for developers requiring predictable monthly costs and higher quotas than standard PAYG.

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

Wafer AI provides fast, serverless AI model inference and agent infrastructure. It allows developers to configure AI models with an API key from its dashboard. Features the 'Wafer Pass' for predictable model access and specialized 'Wafer' models optimized for speed.

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

Weights & Biases Serverless Inference gives API and playground access to open-source LLMs hosted on CoreWeave, using an existing W&B account and no separate provider keys, with support for bringing your own LoRA weights for fine-tuned models. Token rates are listed per 1M tokens on the W&B pricing page: Meta Llama 3.1 8B at $0.22 input / $0.22 output, Meta Llama 3.3 70B at $0.71 / $0.71, OpenAI GPT OSS 120B at $0.03 / $0.17, NVIDIA Nemotron 3.5 Lightning at $0.07 / $0.20 with a $0.04 cache-hit rate, and DeepSeek V4-Pro at $1.15 / $2.55 with a $0.20 cache-hit rate. Inference spend is separate from platform subscriptions and can be capped with a monthly W&B Inference budget.

Weights & Biases states only that Inference includes 'Free credits for a limited time' on the Free plan and a $5/mo credit on Pro, with no dollar amount or expiry published for the free grant (checked 2026-09-16).

Writer is an enterprise generative AI platform featuring its own family of Palmyra models. It provides a consumption-based API for Palmyra X6, X5, and X4 models, optimized for business writing, data security, and precision. It does not natively use OpenAI-compatible request shapes.

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

Wuqiongyun is an anonymous Chinese AI API relay aggregating GPT, Claude, and Gemini models using the New-API panel. It specializes in reselling access with model-specific multipliers, often including 'anti-reverse' and 'kiro channel' model variants.

Directory listings (routerpark 2026-03, routerhub): invite registration quota + daily check-in credit, 600+ models; amount unpublished. Prior probe showed checkin_enabled=false — config may change.

X5Lab provides an OpenAI-compatible API for accessing various large models. It allows users to authenticate using an API key (format: x5-...) via standard OpenAI clients. Access is based on a pay-as-you-go model with a documented dashboard for key management.

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

Xingtu AI (api.xstx.info) is a third-party LLM aggregation relay that was previously marketed for free Claude and Codex access. Community reports and service status trackers indicate the service has been down for several months and may have effectively 'soft-runaway', transitioning to a new platform named Reclaude.

No public free-tier information found (researched 2026-08-28). Source note: Previously attracted users with 'free Claude/Codex'; its companion chat client chat.xstx.info had a shared daily 100-CNY quota; the API side uses CNY pricing with Stripe top-up (~$8/unit). Current free availability is doubtf

Xiaolangwangyue (integrated with GetToken.dev) is an AI API aggregator platform offering highly discounted balance top-up plans and subscriptions for ChatGPT (GPT-6/5.6/5.4) and other models. It follows a 1:1 official rate deduction from a prepaid USD balance bought with CNY at significant discounts.

GetToken is a paid Codex API reseller (ChatGPT Pro 20x resources; balance plans from ¥0.15 per $1). 'First recharge offer' is a paid promo; dashboard has a 'Free trial quota' field but no public free-credit offer.

mimo.xiaomi.com is Xiaomi's MiMo model site, listing MiMo-V2.5-Pro, MiMo-V2.5, MiMo-V2.5-TTS and MiMo-V2.5-ASR alongside a web demo, API access, papers and blog posts. Paid access runs through the MiMo Platform Token Plan, priced in USD per month: Lite $5.28 (list $6), Standard $14.08 ($16), Pro $44 ($50) and Max $88 ($100), covering 49.2B to 984B credits with full V2.5 text, multimodal and speech model access and free TTS models as a limited-time offer. MiMo Code, Xiaomi's coding agent, is documented as startable with no login ('无需登录，开箱即用') and its provider doc points to an OpenAI-compatible endpoint at api.xiaomimimo.com/v1 with an Anthropic-compatible option at /anthropic.

No free credit grant stated: MiMo Code is documented as usable free without login and Token Plans include 'Free TTS Models - Limited time offer', but no USD credit amount is published (mimo.xiaomi.com/mimocode and platform.xiaomimimo.com/token-plan, checked 2026-09-16).

Yi is the model family by 01.AI, offering high-performance LLMs including Yi-Lightning and Yi-Large. The developer platform provides OpenAI-compatible API access with usage-based billing. It is optimized for both Chinese and English language tasks.

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

Yolo-Auto offers flat-rate LLM API pricing specifically designed for coding agents and high-context developer workflows. It provides an OpenAI-compatible endpoint with no per-token billing on paid plans, emphasizing predictable costs and private inference (no routine prompt logging).

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

Copy the "token" value from chat.z.ai → DevTools → Application → Local Storage. Do not copy cookies; OmniRoute handles the per-request CAPTCHA through its browser transport.

No free tier — pay-as-you-go only.

ZCode is Zhipu's official coding client for the GLM Coding Plan sold on bigmodel.cn, whose personal tiers are listed in CNY: ¥94.4/month (list ¥118) with 10,000 credits per week, ¥430.4/month (list ¥538) at six times the Lite allowance, and ¥862.4/month (list ¥1078) at fourteen times, each unlocking Claude Code, Codex, Cursor, OpenCode, Cline, Kilo Code and AutoClaw, with ZCode subscribers receiving 150% quota. The platform's API price list shows GLM-5.3 at 8 CNY per million input tokens and 28 CNY output, GLM-5.3-Flash at 0.8/2.8 CNY, GLM-TTS at 2 CNY per 10,000 characters, and Batch calls at half the standard price. New registered users receive 20 million tokens, and GLM-4.7-Flash (200K context) and GLM-4.6V-Flash are listed as free API models.

Allowance is 20,000,000 tokens for newly registered users ('新用户注册得 2000万 Tokens') plus up to 200 million tokens via referral on bigmodel.cn/pricing; no CNY or USD cash value is stated for the grant (checked 2026-09-16).

OAuth access — sign-in with your existing account. Sign in with your Zed account (native-app sign-in). OmniRoute generates a one-time RSA keypair and opens zed.dev to authorize it — on a remote/headless install, copy the resulting 127.0.0.1 callback U 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.

ZenMux is a commercial unified API gateway providing access to 100+ mainstream AI models. It features a unique 'LLM insurance' mechanism that compensates users for slow or failed requests. The platform aggregates models from official providers and authorized cloud partners.

Free tier: basic monitoring plus some free models; once ran limited-time free trials of Claude Opus 4.6 and similar; core is pay-as-you-go with Pro/Max/Ultra paid subscriptions. No quantifiable standing credit.

web-cookie access — wraps the provider web app (unofficial). Login at zenmux.ai, then export all cookies using EditThisCookie or Cookie-Editor and paste the full Cookie header string here. Refresh every ~30 days. 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.

ZeroLimitAI is an AI API aggregator offering free AI chat and a developer API with automatic model routing. It advertises a lifetime access plan for a one-time fee and a free tier for testing. The API is OpenAI-compatible.

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

Zylo API provides a unified OpenAI-compatible gateway to models from Anthropic, OpenAI, Google, and more with zero token markup. Billing is based on base per-token rates deducted from a prepaid balance. A flat platform fee applies when adding credits.

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

b.ai is an OpenAI-compatible LLM gateway (distinct from TheB.AI) focusing on unified multi-model access and privacy. It supports native crypto payments and anonymous access via the https://api.b.ai/v1 base URL.

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

g4f.space is an AI API router providing access to multiple frontier models including Gemini. It emphasizes unrestricted, open-source access but now requires proof-of-work credits for anonymous use to maintain service quality.

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

iFlyTek's Spark (星火) open platform sells its models through xinghuo.xfyun.cn in CNY per million tokens: the flagship Spark-X2.5 is listed at a limited-time 50% discount of 1.60 CNY per million input tokens, 6.00 CNY per million output tokens and 0.24 CNY per million cache-hit tokens. Spark X2 is quoted at 2–3 CNY per million tokens and Spark-X2-Flash at 1–2 CNY, while the small dense models Spark-X2.5-4B (limited-time free) and Spark-X2.5-1.7B (free) are offered at no cost. The same catalogue resells third-party open models such as GLM-5.2 (8 CNY in / 28 CNY out per million) and DeepSeek-V4-Flash (1 CNY in / 2 CNY out), alongside fine-tuning rates from 6 CNY per million tokens.

No cash credit: the platform states new users get 10,000 free voice interactions and 200,000 free tokens per Spark model ('每个模型20万tokens免费额度') on xinghuo.xfyun.cn/sparkapi; no CNY or USD credit figure is published (checked 2026-09-16).

spark-api-open.xf-yun.com is the OpenAI-compatible HTTP endpoint for iFlyTek's Spark (讯飞星火) LLM. It provides access to multimodal models via the iFlyTek Open Platform. A permanently free 'Lite' version is available for developers.

Spark Lite (model=lite) permanently free since May 2024: unlimited tokens, QPS caps only - unquantifiable; one-off token packs for other tiers (~2M tokens ~ $2, promo-dependent); real-name registration required.