GPT-5.6 Terra Pricing
OpenAI · GPT-5.6 · Live
GPT-5.6 Terra costs $2 per million input tokens and $12 per million output tokens on the OpenAI API. Cached input reads are billed at $0.2 per million tokens. It supports a 1,048,576-token context window and up to 128,000 output tokens per request. The model supports extended reasoning, image input, tool use, long context. Released July 9, 2026. Pricing verified September 14, 2026.
GPT-5.6 Terra API pricing
GPT-5.6 Terra API pricing is $2 per million input tokens and $12 per million output tokens, verified September 14, 2026.
- Input (per 1M tokens)
- $2
- Output (per 1M tokens)
- $12
- Cached input (per 1M tokens)
- $0.2
- Batch discount
- 50%
- Context window
- 1,048,576 tokens
- Max output
- 128,000 tokens
- Released
- July 9, 2026
Capabilities
GPT-5.6 Terra supports extended reasoning, image input, tool use, long context.
Price history
See full GPT-5.6 Terra price historyGPT-5.6 Terra API pricing has changed 1 time on record, most recently on July 30, 2026 (decrease).
- July 30, 2026: Decrease — input $2.5 → $2/M (−$0.5) — output $15 → $12/M (−$3)
Frequently asked questions
Short answers to the most common questions about GPT-5.6 Terra pricing, limits, and capabilities.
Notes
2026-07-30: 20% API price cut announced. Input $2.50 → $2.00, Output $15.00 → $12.00, Cache Read $0.25 → $0.20 (following OpenAI's standard ~10% cache-of-input pricing). Vendor did not change Sol (flagship) pricing. Source: unite.ai/openai-cuts-api-prices-on-its-two-cheaper-gpt-5-6-tiers/, aipricing.guru/openai-pricing/. Context: competitive pressure from Chinese open-source models. OpenAI also added Fast Mode on the same day.