GPT-5.6 Terra

Mid tier of the GPT-5.6 family (GA July 9, 2026). Targets GPT-5.5-level quality at roughly half the price, making it the value pick for most production workloads. 90% cached-input discount.

GPT-5.6 Terra strengths

• GPT-5.5-class quality at half the cost
• Strong general reasoning and coding
• ~1M context window
• Great price-to-performance for production

Pricing & context

Cost guide: a typical call of about 10K input + 2K output tokens costs roughly $0.055 at list prices. Worth modelling against cheaper tiers before committing high-volume traffic.

When to choose GPT-5.6 Terra

GPT-5.6 Terra is best for most production apps that want near-flagship quality at a materially lower per-token cost. If your workload is more cost-sensitive, weigh it against gpt-oss-120b (≈$0.03 input /1M) first.

GPT-5.6 Terra FAQ

How much does GPT-5.6 Terra cost?

GPT-5.6 Terra is priced at $2.50 per 1M input tokens and $15.00 per 1M output tokens (public API list price), with a ~1M tokens (128K max output) context window. A typical call of about 10K input and 2K output tokens costs roughly $0.055.

What is GPT-5.6 Terra best for?

GPT-5.6 Terra by OpenAI is best for most production apps that want near-flagship quality at a materially lower per-token cost.

How does GPT-5.6 Terra pricing compare to Grok 4.3?

GPT-5.6 Terra input costs $2.50 per 1M tokens versus $1.25 ($0.20 cached) for Grok 4.3, roughly 2.0x more expensive on input. Output is $15.00 vs $2.50.

Is GPT-5.6 Terra multimodal?

GPT-5.6 Terra supports text, image.

Tools that use GPT-5.6 Terra