How much does GPT-6.1 Terra Pro cost?

On the OpenRouter route, GPT-6.1 Terra Pro costs $1.00 per 1 million input tokens and $5.00 per 1 million output tokens, in US dollars. Input tokens that GPT-6.1 Terra Pro reads from the prompt cache cost $0.05 per 1 million tokens. LLMCompare verified this price on 27 Oct 2026.

What is the context length of GPT-6.1 Terra Pro?

GPT-6.1 Terra Pro has a context length of 1,050,000 tokens and returns up to 128,000 output tokens in one call.

What inputs does GPT-6.1 Terra Pro accept?

GPT-6.1 Terra Pro accepts these inputs: Text, Image, File. GPT-6.1 Terra Pro returns: Text.

Which reasoning effort levels does GPT-6.1 Terra Pro support?

GPT-6.1 Terra Pro supports these reasoning effort levels: max, xhigh, high, medium, low. Reasoning is always on for GPT-6.1 Terra Pro and cannot be turned off.

Can I test GPT-6.1 Terra Pro on my own data?

Not yet. LLMCompare lists the prices and parameters of GPT-6.1 Terra Pro, but no route to GPT-6.1 Terra Pro is configured on LLMCompare, so it cannot be selected for an evaluation.

GPT-6.1 Terra Pro

by OpenAIopenai/gpt-6.1-terra-pro

Text
No route yet
Released 26 Oct 2026

LLMCompare cannot run GPT-6.1 Terra Pro yet.No route to this model is configured on this site yet. Its prices and parameters are listed below for reference.

See the models that can be run now

GPT-6.1 Terra Pro at a glance

Context length: 1,050,000 tokens
Maximum output: 128,000 tokens
Accepts: Text, Image, File
Returns: Text
Features: ReasoningJSON outputTool callingPrompt cachingImage input
Reasoning effort levels: maxxhighhighmediumlowReasoning is always on for this model.
Released: 26 Oct 2026
Knowledge cutoff: Not published

Model facts synced from the OpenRouter model list on 27 Oct 2026.

GPT-6.1 Terra Pro pricing by route

A route is the service LLMCompare calls to reach the model. GPT-6.1 Terra Pro has 1 route. Prices are in US dollars.

Prices of GPT-6.1 Terra Pro on each route
Route	On LLMCompare	Inputper 1M tokens	Outputper 1M tokens	Cache readper 1M tokens	Cache writeper 1M tokens	Price verified on	Source
OpenRouterDefault	Not configured	$1.00	$5.00	$0.05	$1.25	27 Oct 2026	openrouter.ai/openai/gpt-6.1-terra-pro

The cost shown in an LLMCompare report is calculated from these prices as they were at the time of the run.

Cost calculator

Estimate what a batch of calls to GPT-6.1 Terra Pro costs. The starting numbers are examples. Change them to match your task.

Input tokens per call

Input tokens read from cache

Part of the input tokens above, billed at the cache read price.

Output tokens per call

Reasoning tokens per call

Billed in addition to the output tokens.

Number of calls

Cost per call: $0.0035; 5 credits
Cost of 100 calls: $0.35; 500 credits

Calculated from the OpenRouter prices verified on 27 Oct 2026. Credits are the cost plus a 20% service fee, at $0.001 per credit, rounded up for each call, with a minimum of 1 per call. A real run is charged for the usage the provider reports.

Parameters you can set

These are the parameters LLMCompare can set when it calls the model through OpenRouter.

Parameters of GPT-6.1 Terra Pro
Parameter	Type	Range or options	Default
`max_tokens`	Integer	1 to 128,000	Provider default
`reasoning_effort`	One of	`maxxhighhighmediumlow`	`medium`
`seed`	Integer	-2,147,483,648 to 4,294,967,295	Provider default
`response_format`	One of	`textjson_object`	Provider default

About 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...

Description as published for this model. LLMCompare has not edited it.

Models to compare with GPT-6.1 Terra Pro

Text models from the same provider and models at the nearest price. The order is not a ranking.

Models to compare with GPT-6.1 Terra Pro
Model	Context	Max output	Input priceper 1M tokens	Output priceper 1M tokens	Features	Released	On LLMCompare
GPT-6.1 TerraOpenAI`openai/gpt-6.1-terra`	1.05M	128k	$1.00	$5.00	ReasoningJSONToolsCacheVision	26 Oct 2026	No route yet
o4 Mini HighOpenAI`openai/o4-mini-high`	200k	100k	$1.10	$4.40	ReasoningJSONToolsCacheVision	16 Apr 2025	No route yet
o4 MiniOpenAI`openai/o4-mini`	200k	100k	$1.10	$4.40	JSONToolsCacheVision	16 Apr 2025	No route yet
Claude Haiku 4.5Anthropic`anthropic/claude-haiku-4.5`	200k	64k	$1.00	$5.00	JSONToolsCacheVision	15 Oct 2025	No route yet
Qwen3.7 MaxQwen`qwen/qwen3.7-max`	1M	131k	$1.48	$4.43	JSONToolsCache	21 May 2026	No route yet
Mistral Large 4Mistral`mistralai/mistral-large-4-0`	1.05M	262k	$1.36	$4.18	ReasoningJSONToolsCacheVision	6 Oct 2026	No route yet

Questions about GPT-6.1 Terra Pro

How much does GPT-6.1 Terra Pro cost?: On the OpenRouter route, GPT-6.1 Terra Pro costs $1.00 per 1 million input tokens and $5.00 per 1 million output tokens, in US dollars. Input tokens that GPT-6.1 Terra Pro reads from the prompt cache cost $0.05 per 1 million tokens. LLMCompare verified this price on 27 Oct 2026.
What is the context length of GPT-6.1 Terra Pro?: GPT-6.1 Terra Pro has a context length of 1,050,000 tokens and returns up to 128,000 output tokens in one call.
What inputs does GPT-6.1 Terra Pro accept?: GPT-6.1 Terra Pro accepts these inputs: Text, Image, File. GPT-6.1 Terra Pro returns: Text.
Which reasoning effort levels does GPT-6.1 Terra Pro support?: GPT-6.1 Terra Pro supports these reasoning effort levels: max, xhigh, high, medium, low. Reasoning is always on for GPT-6.1 Terra Pro and cannot be turned off.
Can I test GPT-6.1 Terra Pro on my own data?: Not yet. LLMCompare lists the prices and parameters of GPT-6.1 Terra Pro, but no route to GPT-6.1 Terra Pro is configured on LLMCompare, so it cannot be selected for an evaluation.