GPT-5.6 Terra

OPENAI Developer Architecture Profile

Intelligence (ELO)1479Chatbot Arena Verified

Max Context1,050,000Tokens

API Cost / 1M$17.50Blended Prompt + Completion

Model Capabilities

Coding & Logic
Fictional

GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...

Granular Pricing Matrix

Input Tokens (Prompt)$2.50 / 1M

Output Tokens (Completion)$15.00 / 1M

Pricing data via OpenRouter. Sync: 7/9/2026

Evaluate Competitors

VS Engine MatchupGPT-5.6 Terra vs OpenAI: GPT-5.6 Terra Pro VS Engine MatchupGPT-5.6 Terra vs Anthropic: Claude Opus Latest VS Engine MatchupGPT-5.6 Terra vs OpenAI: GPT-4o (2024-05-13)VS Engine MatchupGPT-5.6 Terra vs Google: Nano Banana Pro (Gemini 3 Pro Image)VS Engine MatchupGPT-5.6 Terra vs Anthropic: Claude Fable Latest VS Engine MatchupGPT-5.6 Terra vs OpenAI: GPT-5.2 Chat