OpenAI's balanced frontier model. GPT-5.6 Terra is the default model in AdaL — strong intelligence at a competitive price point for everyday engineering.
Get StartedRun /model and pick GPT-5.6 Terra · $2.50/M input · $15/M output
Key capabilities and pricing
GPT-5.6 Terra is the default model for new AdaL sessions — the recommended starting point for most tasks.
Strong reasoning capability at mid-tier pricing — 922K input context.
Handles code generation, refactoring, debugging, and review with consistent quality.
Analyze screenshots, diagrams, and UI alongside code.
Reasoning effort from none (fastest) to max (deepest) — adapt to task complexity.
Strong price-performance for high-volume workloads.
Available in AdaL CLI and Desktop through the model selector
Use the coding environment where AdaL already understands your repo, tools, and task context.
Open the model selector and choose your model from the list.
Ask AdaL to inspect, plan, edit, test, and review with your chosen model powering the agent loop.
Key details about GPT-5.6 Terra
"GPT-5.6 Terra balances intelligence and cost for professional workloads."
OpenAI
"Terra is the default model in AdaL — start here and upgrade to Sol only for the hardest tasks."
AdaL
"922K input tokens — enough for large monorepos and long documents."
Context
"Set reasoning effort from none to max to match your speed/quality tradeoff."
Effort
Open AdaL CLI or Desktop, run /model, and choose GPT-5.6 Terra.
Get Started with AdaL