GPT-4o input costs $0 per million tokens on ZeroCode — because the entire platform is free to use with no per-token pricing at all. That’s the headline: ZeroCode doesn’t charge by token. You get access to GPT-4o and Claude 3.5 Sonnet at zero cost, with no free tier credit card requirement and no minimum top-up amount. This is not a “cheap” relay station; it’s a free one.

Pricing Model: Free, No Hidden Per-Token Fees

ZeroCode operates on a completely free pricing model. There is no per-token billing, no batch discount thresholds, and no per-request overhead fees. The only cost is your time setting up the API integration.

  • Per-token rates: None. ZeroCode does not charge input or output token costs.
  • Free trial: Full access with no credit card required. The free_trial field is True.
  • Minimum recharge: Not specified — because there is no recharge system.
  • Hidden fees: None disclosed. No batch discounts exist because there is no pricing structure. Bottom line: ZeroCode is the only relay station in our dataset that offers GPT-4o and Claude 3.5 Sonnet completely free, with no upfront payment, no token caps, and no credit card gate.

Models Available: Limited But High-Value

ZeroCode exposes exactly two models, per the Models field: GPT-4o and Claude 3.5 Sonnet. Both are top-tier LLMs from OpenAI and Anthropic respectively. There are no smaller, cheaper variants (no GPT-4o-mini, no Claude Haiku). You get the flagship models or nothing.

Dimension ZeroCode OpenRouter (for comparison)
Models offered 2 (GPT-4o, Claude 3.5 Sonnet) 200+
Pricing Free Per-token (varies by model)
Free tier credit card required No Yes ($1 credit, requires card)
Max tokens 100,000 Varies by model
Payment methods Alipay, WeChat Pay Credit card, crypto
Uptime 99.3% 99.9% (reported)
Latency 1013ms ~500-800ms (typical)

Performance and Reliability

ZeroCode’s Uptime is 99.3% — slightly lower than established competitors like OpenRouter (typically 99.9%). The Latency of 1013ms is noticeably slower than direct API calls or optimized relay stations. Speed rating is 3.5/5, which feels accurate: requests complete, but they’re not snappy.

  • 99.3% uptime means roughly 5 hours of downtime per month.
  • 1013ms average latency adds about half a second to each request compared to direct API.
  • 100,000 max tokens is generous — enough for long document processing.

Pros & Cons

Pros

  • Completely free: no per-token costs, no hidden fees, no credit card required.
  • Two top-tier models (GPT-4o, Claude 3.5 Sonnet) at zero cost.
  • 100,000 token context window supports long-form tasks.
  • Supports Alipay and WeChat Pay — though no payments are required. Cons
  • Only two models available. No access to GPT-4o-mini, Claude Haiku, Gemini, or DeepSeek.
  • 99.3% uptime and 1013ms latency are below the average for paid relay stations.
  • New platform with limited long-term reliability data (Safety rating: 3/5).
  • Customer support channels are limited — no live chat or phone support mentioned.

Verdict

ZeroCode is a viable option for developers who want to test GPT-4o and Claude 3.5 Sonnet without spending a yuan. The free pricing is genuine — no token billing, no hidden fees, no credit card gate. But you pay in other ways: limited model selection, higher latency, lower uptime, and no customer support safety net. Use ZeroCode for prototyping, personal projects, or evaluating whether GPT-4o or Claude 3.5 Sonnet fits your workflow. Do not use it for production workloads where reliability, latency, or model diversity matter.

FAQ

Q: Does ZeroCode require a credit card to start using the free trial? A: No. The free_trial field is True and there is no credit card requirement. You can register and start using GPT-4o and Claude 3.5 Sonnet immediately. Q: Are there any per-token costs or hidden fees? A: No. ZeroCode does not charge per-token rates. There are no batch discount thresholds, no per-request overhead fees, and no minimum top-up amounts. The platform is entirely free. Q: How does ZeroCode’s latency compare to direct API access? A: ZeroCode’s average latency is 1013ms, which is significantly slower than direct API calls (typically 200-500ms for GPT-4o). Expect about half a second to one second of additional delay per request. Q: Can I use ZeroCode for production applications? A: Not recommended. With 99.3% uptime (about 5 hours of downtime monthly), limited model selection, and a safety rating of 3/5, ZeroCode is better suited for testing and personal projects rather than production workloads. Q: What payment methods does ZeroCode support? A: ZeroCode supports Alipay and WeChat Pay, though no payments are required since the platform is free.

Data provenance: any figures from hands-on checks are author-reported and tested on the recorded date. Independent verification is unavailable unless a source is linked.