Skip to content
AI Model Radar

GPT-5.6-terra

gpt-5.6-terra
OpenAI · chat · api
GA Alert me on changes
Intelligence
55
Context
1.1M
Max output
—
Input $/1M
$2.50
Output $/1M
$15.00
Modalities
text
Released
23 Jun 2026
Intelligence Index via Artificial Analysis · 0–100, higher is better
AI summary
● machine-written

GPT-5.6 Terra: OpenAI's balanced mid-tier model

GPT-5.6 Terra is OpenAI's mid-range model in the GPT-5.6 family, positioned between the flagship Sol tier and cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic tasks where capability and cost need to be balanced, offering strong performance at roughly half the cost of Sol. The model supports text modalities and is available via API.

What's new
  • 1,050,000 token context window
  • Released July 9, 2026
  • Priced at $2.50 input / $15 output per 1M tokens
  • Balanced capability tier in new GPT-5.6 family
  • Supports prompt caching at $0.25 per 1M cached-input reads
Best for
Everyday coding tasksReasoning workloadsAgentic tasksPremium production workloads requiring cost efficiency
Sources

Common questions about GPT-5 →

Source: https://platform.openai.com/docs/models