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Release date: July 10, 2026 LLMEasy now supports the GPT-5.6 model family. Check the model plaza for currently available GPT Key group model IDs and live pricing, then use them in Codex, OpenCode, OpenClaw, Cursor, Cline, Zed, or other external tools through the OpenAI-compatible protocol. The new model IDs are:
Model IDBest for
gpt-5.6-solComplex reasoning, large codebases, multi-step agent tasks, and long-running coding workflows
gpt-5.6-terraEveryday coding, interactive development, common agent tasks, and balanced capability and cost
gpt-5.6-lunaLighter tasks where speed and cost matter, such as batch assistance, quick Q&A, simple rewrites, and small tool calls

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Highlights

  • Three model tiers: OpenAI positions GPT-5.6 Sol, Terra, and Luna for high-reasoning work, balanced everyday tasks, and lighter high-volume tasks
  • Better fit for coding agents: OpenAI highlights improvements across coding-agent, terminal workflow, and tool-coordination tasks
  • Ready for external tools: OpenAI Help Center confirms Sol, Terra, and Luna are available through the OpenAI API; in LLMEasy, use the GPT Key group and https://www.llmeasy.ru/v1
  • Choose by workload: Start with gpt-5.6-sol for complex work, gpt-5.6-terra for daily development, and gpt-5.6-luna for lighter or cost-sensitive requests

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Setup guidance

For Codex or other OpenAI-compatible tools, follow the matching setup guide:
  • Base URL: https://www.llmeasy.ru/v1
  • API Key group: choose the GPT Key group
  • Model name: copy the current model ID from the model plaza
Do not hardcode a model name that is not shown in the model plaza. Model availability, pricing, and routing status follow the live model plaza.

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How to choose

If you are not sure where to start, choose by task complexity:
  • Use gpt-5.6-sol for large codebase understanding, cross-file edits, test repair, long debugging loops, and agent tasks that need stronger reasoning
  • Use gpt-5.6-terra for everyday coding, code explanation, routine refactors, documentation, and most interactive development tasks
  • Use gpt-5.6-luna for lightweight Q&A, batch assistance, simple text processing, low-latency tool calls, and high-volume cost-sensitive requests

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Official sources