OpenAdapter is an all-in-one affordable coding plan. Access the best open-source AI models — DeepSeek, Qwen, Mistral, Kimi K2.5, MiniMax, GLM-5, and more — in any editor. One plan starting at $9/mo.

Which AI models are included?

40+ open-source models across providers including DeepSeek, Qwen, Mistral, Kimi · Moonshot, MiniMax, GLM · Zhipu, Meta Llama, NousResearch, and more. New SOTA models are added on a rolling basis as they become available.

Which editors and tools are supported?

Cursor, VS Code (with Cline, Continue.dev, Roo Code), Windsurf, Claude Code, Aider, OpenCode, Zed, Void, PearAI, and more. Any editor with a custom base URL works.

Do I need to manage API keys?

No. OpenAdapter gives you one endpoint and one subscription. No juggling API keys from multiple providers.

Is there a free tier?

Yes — the Free plan includes 40+ open-source SOTA models with a strict daily quota, no credit card required.

GPT-6 Luna replaces GPT-5.6 Luna

GPT-6-Luna is live and GPT-5.6-Luna is retired. Luna is the fast tier of OpenAI's GPT-6 line, the one OpenAI calls its most efficient model for focused, high-volume work. It carries a 1M-token context window with up to 128K output, reads text, images and files, and has a knowledge cutoff of May 2026 against February for its predecessor. Call it as GPT-6-Luna.

It is a pro-tier model at 1 request of quota per call, so it is available on every paid plan and the free tier. GPT-5.6 Luna was max-tier; this is a step down in price for the same job.

OpenAI has not published a standard benchmark table for Luna. What they do state:

Measure	GPT-6 Luna	GPT-5.6 Luna
DeepSWE v1.1	66.6	67.2
AutomationBench	+5.4 points over its predecessor at 58% lower cost per task	14.9
HealthBench Professional	60.8	55.7
Upstream price, in / out per 1M	$0.10 / $0.50	$0.20 / $1.20

We will add more figures as OpenAI publishes them rather than borrow numbers from elsewhere.

Calls to GPT-5.6-Luna now return a message pointing to GPT-6-Luna.

Sources: OpenAI announcement, model page.