Last refreshed 2026-07-09. Next refresh: weekly.
Why use GPT-5.6 Terra on OpenRouter?
OpenRouter offers GPT-5.6 Terra with pay-as-you-go pricing at $2.50/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare GPT-5.6 Terra across 2 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: openai/gpt-5.6-terraopenai/gpt-5.6-terraRequest example
openai/gpt-5.6-terra.Gotchas
- Use provider model ID "openai/gpt-5.6-terra", not the LLMReference slug "gpt-5.6-terra".
Compare GPT-5.6 Terra Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenAI API | $2.50 | $15.00 |
| OpenRouter | $2.50 | $15.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $2.50 |
| Output tokens | $15.00 |
Capabilities
About GPT-5.6 Terra
OpenAI's balanced mid-tier GPT-5.6 model. Terra delivers performance competitive with GPT-5.5 at about 2x lower cost, suited for high-volume production workloads such as customer support, document analysis, and internal tooling. Generally available July 9, 2026 across ChatGPT, Codex, and the OpenAI API (model ID gpt-5.6-terra). Supports text and image inputs, reasoning, tool use, prompt caching, and Batch API with a 1,050,000-token context window and 128K max output.