opencode.ai Zen Removed from Free API Rankings: What Happened?
Updated: 2026-09-10 | Category: Rankings Update
We regret to inform the community that opencode.ai Zen has discontinued external API access and is now restricted to internal OpenCode products only. This means developers relying on the Zen gateway for integration, testing, or building will no longer be able to access its models via https://opencode.ai/zen/v1.
1. Why Was Zen Removed?
Based on official updates and channel verification, the reasons for opencode.ai Zen's adjustment are:
- Strategy shift: The Zen gateway moved from a "limited free feedback period" to internal-only access for OpenCode products;
- External keys invalidated: Previously obtainable Zen gateway keys no longer work for external
chat/completionsrequests; - Model repatriation: Anonymous/free models once exposed through Zen (e.g., Big Pickle, MiMo-V2.5 Free) are no longer available via this gateway.
In short, Zen has reverted from a "public free API" back to "internal infrastructure."
2. Impact on You
| Impact | Details |
|---|---|
| Existing scripts/apps | If https://opencode.ai/zen/v1 is hardcoded, update Base URL immediately |
| Free quota | No more 60 RPM, 200K context free tier |
| Anonymous model access | Big Pickle and similar models no longer exposed externally |
| Billing risk | $20 prepaid balance may still exist, but external calls are blocked |
Action: Audit all configurations pointing to opencode.ai/zen and migrate to other free APIs on the rankings.
3. Current Alternatives on the Rankings
As of 2026-09-10, the following free LLM APIs remain available and externally accessible:
Top Picks
- NVIDIA NIM — 83 models (57 chat + 26 specialized), generous free tier, ideal for multi-model coverage.
- OpenRouter — 18 free models, top 5-dimension verified ranking, strong aggregation.
- Gemini 2.5 Flash (Google AI Studio) — Topped September rankings, great speed and quality.
Other Reliable Choices
- Groq — Ultra-low latency inference, great for conversational agents.
- Mistral AI — 39 open-source models, stable European endpoints.
- Agnes AI — 10 multimodal models including image and video generation.
- Cloudflare Workers AI — Edge-deployed, zero-cost lightweight inference.
- Cohere Trial — 12 models including high-quality embeddings.
💡 Migration tip: Most alternatives offer OpenAI-compatible endpoints. Switch by changing Base URL and API Key only.
4. Recommendations
- Bookmark our rankings page: https://apishare.cc/free-llm-api-rankings — we continuously track channel availability and update in real time;
- Follow updates: Stay tuned to apishare.cc for the latest free API news;
- Report issues: If you discover other channel changes or new free APIs, let us know via the community.
Bottom line: opencode.ai Zen's exit is a normal adjustment in the free API landscape. While one option is gone, 8 high-quality alternatives remain on the rankings. The key is to audit dependencies and migrate quickly to avoid service disruption.
This is a rankings update notice. Data as of 2026-09-10.
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