How much does GPT-5.6 Terra cost?

GPT-5.6 Terra costs $2 per million input tokens and $12 per million output tokens. The blended average is $7.00 per million tokens.

What is the context window of GPT-5.6 Terra?

GPT-5.6 Terra supports a context window of 1050K tokens (1,050,000 tokens) and can generate up to 128K output tokens per request.

What is GPT-5.6 Terra best for?

GPT-5.6 Terra is best for: Default production tier. It supports chat, vision, function_calling, code, reasoning capabilities.

GPT-5.6 Terra

OpenAIbalanced New-20%

The balanced everyday tier of the GPT-5.6 family, GA 9 Jul 2026. On 30 Jul 2026 OpenAI cut Terra 20% to $2 input / $12 output per 1M tokens, crediting inference work that reduced end-to-end serving cost by 20% and improved token-generation efficiency by more than 15%. Same 1.05M context as Sol, cache reads at $0.20, Batch API at half rate. This is the tier most production workloads should default to — it lands within a few points of Sol on most evals at 40% of the price.

Context Window

tokens

Max Output

128K

tokens

Input Price

per 1M tokens

Output Price

$12

per 1M tokens

Speed

118

tokens/sec

Released

Jul 2026

2026-07-09

Blended Cost

$7.00

per 1M tokens

Value Score

13.3

quality per $

Capabilities

ChatVisionFunction CallingCode GenerationReasoning

Benchmarks

Quality Index

MMLU Pro

89.4

HumanEval (Coding)

93.8

MATH

90.1

Arena ELO

1489

Pricing History

Jul 9, 2026$2.5 / $15(launch)

Jul 30, 2026$2 / $12current

Try in Playground Use via Swfte Connect OpenAI Docs

Compare With

Quality: 94·$25.00/1M

About GPT-5.6 Terra

GPT-5.6 Terra is a balanced AI model by OpenAI, released on July 9, 2026. It supports a context window of 1050K tokens and can generate up to 128K output tokens.

At $2 per million input tokens and $12 per million output tokens, its blended cost of $7.00/1M tokens places it in the premium pricing tier. Its value score of 13.3 reflects the balance of quality and cost.

Using GPT-5.6 Terra with Swfte

Access GPT-5.6 Terra through Swfte Connect, our unified LLM gateway. Connect gives you a single API for 50+ models, with automatic routing, cost optimization, and fallback handling. You can also try GPT-5.6 Terra in our AI Playground before integrating.