OpenAI

OpenAI: GPT-6.1 Terra Pro

GPT-6.1 Terra Pro is the same underlying model as [GPT-6.1 Terra](https://openrouter.ai/openai/gpt-6.1-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...

gpt-6.1-terra-pro

Pricing

~1%

Input: $0.99 / 1,000,000 tokens
Output: $4.95 / 1,000,000 tokens
Cache read: $0.0495 / 1,000,000 tokens
Cache write: $1.2375 / 1,000,000 tokens

How pricing works

Discount history

1%Nov 8, 03:58 AM UTC

Nov 7, 11:59 PMNov 8, 03:58 AM UTC

Model details

Input: file, image, text
Output: text
Context window: 1,050,000 tokens
Maximum output: 128,000 tokens
Availability: Uncapped capacity
Updated: 11/8/2026, 4:00:11 AM UTC

Capacity is reserved when your request is accepted.

Capabilities

ChatStreamingWeb searchVisionTool callingReasoningJSON mode

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetoolsverbosity