--- title: OpenAI: GPT 6.1 Terra Pro API | Text Generation | ModelsLab description: Build with OpenAI: GPT 6.1 Terra Pro API by OpenAI. Text generation, chat, code, and reasoning. Plans from $21/month. url: https://modelslab.com/models/openai/openai-gpt-6.1-terra-pro.md canonical: https://modelslab.com/models/openai/openai-gpt-6.1-terra-pro type: product component: Playground/LLM/Index generated_at: 2026-11-03T14:59:25.030649Z --- OpenAI: GPT-6.1 Terra Pro --- [LLMs.txt](https://modelslab.com/models/openai/openai-gpt-6.1-terra-pro/llms.txt) [.md](https://modelslab.com/models/openai/openai-gpt-6.1-terra-pro.md) OpenAI: GPT-6.1 Terra Pro --- Choose a prompt below to get started or type your own message Explain quantum computing in simple terms Write a Python function to sort a list Create a marketing email for a SaaS product Compare REST vs GraphQL APIs images, PDFs and text files Send ### OpenAI: GPT-6.1 Terra Pro openai openai-gpt-6.1-terra-pro Copy model ID PricingInput $1.00 / 1M tokens Output $5.00 / 1M tokens API EndpointsOpenAI Compatible `https://modelslab.com/api/v7/llm/chat/completions`Endpoint Anthropic Compatible `https://modelslab.com/api/v7/llm/v1/messages`Messages `https://modelslab.com/api/v7/llm/v1/messages/count_tokens`Count Tokens `https://modelslab.com/api/v7/llm/v1/models`Models Use with Claude Code cURL Example ParametersSystem MessageYou are a helpful AI assistant specialized in providing accurate and detailed responses. Temperature0.7 Max Tokens4000 Top P0.9 Frequency Penalty0 Presence Penalty0 Thinkinglow lowmediumhigh Deeper thinking spends more of the Max Tokens budget before the answer starts. Model Info Support Looking for something different? --- Models that trade off differently against the one you are viewing ### Better quality Newer flagship models that generally produce stronger results. [OpenAI](https://modelslab.com/models/openai) [GPT 5.2](https://modelslab.com/models/openai/gpt-5.2) [OpenAI](https://modelslab.com/models/openai) [GPT 5.1](https://modelslab.com/models/openai/gpt5.1) [OpenAI](https://modelslab.com/models/openai) [GPT-5.1-Codex-Max](https://modelslab.com/models/openai/gpt-5.1-codex-max) ### Lower cost per run Open-source models we host, unlimited on the $149/month plan. [ModelsLab](https://modelslab.com/models/modelslab) Popular [Modelslab: Custom LLM](https://modelslab.com/models/modelslab/uncensored-chat)Open Source Model [Qwen](https://modelslab.com/models/open_router) [Qwen: Qwen3 235B A22B Instruct 2507](https://modelslab.com/models/qwen/qwen-qwen3-235b-a22b-2507)Closed Source Model [Google](https://modelslab.com/models/google) [Gemini 2.5 Flash](https://modelslab.com/models/google/gemini-2.5-flash)Closed Source Model [OpenAI](https://modelslab.com/models/openai) [gpt-oss-20b](https://modelslab.com/models/openai/gpt-oss-20b)Closed Source Model [DeepSeek](https://modelslab.com/models/open_router) [DeepSeek: DeepSeek V4 Flash 0423](https://modelslab.com/models/deepseek/deepseek-deepseek-v4-flash)Closed Source Model [Google](https://modelslab.com/models/open_router) [Google: Gemini 3.1 Flash Lite](https://modelslab.com/models/google/google-gemini-3.1-flash-lite)Closed Source Model Related Models --- Discover similar models you might be interested in [View all LLM Models](https://modelslab.com/models?feature=llmaster) [#### Cohere/Cohere: Command R+ (08-2024) cohere-command-r-plus-08-2024 From $6.25/M tokens](https://modelslab.com/models/cohere/cohere-command-r-plus-08-2024) [#### Moonshot AI/MoonshotAI: Kimi K2.5 moonshotai-kimi-k2.5 From $1.50/M tokens](https://modelslab.com/models/moonshotai/moonshotai-kimi-k2.5) [#### OpenAI/OpenAI: GPT-6.1 Terra openai-gpt-6.1-terra From $3.00/M tokens](https://modelslab.com/models/openai/openai-gpt-6.1-terra) [#### Meta/Meta Llama 3.1 8B Instruct Turbo meta-llama-Meta-Llama-3.1-8B-Instruct-Turbo From $0.18/M tokens](https://modelslab.com/models/meta/meta-llama-Meta-Llama-3.1-8B-Instruct-Turbo) [#### Morph/Morph: Morph V3 Large morph-morph-v3-large From $1.40/M tokens](https://modelslab.com/models/morph/morph-morph-v3-large) [#### Scaledown/ScaleDown: Summarize scaledown-summarize From $0.02/M tokens](https://modelslab.com/models/scaledown/scaledown-summarize) [#### Meta/Meta Llama 3 70B Instruct Turbo meta-llama-Meta-Llama-3-70B-Instruct-Turbo From $0.88/M tokens](https://modelslab.com/models/meta/meta-llama-Meta-Llama-3-70B-Instruct-Turbo) [#### Z.ai/Z.ai: GLM 5.3 (batch) z-ai-glm-5.3-batch From $1.23/M tokens](https://modelslab.com/models/z-ai/z-ai-glm-5.3-batch) [#### Qwen/Qwen: Qwen3.7 Plus (batch) qwen-qwen3.7-plus-batch From $0.57/M tokens](https://modelslab.com/models/qwen/qwen-qwen3.7-plus-batch) [#### Anthropic/Anthropic: Claude Haiku Latest anthropic-claude-haiku-latest From $0.30/M tokens](https://modelslab.com/models/anthropic/anthropic-claude-haiku-latest) [#### Meta/Meta: Llama 3.1 8B Instruct meta-llama-llama-3.1-8b-instruct From $0.07/M tokens](https://modelslab.com/models/meta/meta-llama-llama-3.1-8b-instruct) [#### Inference Net/Inference.net: Schematron V2 Small inference-net-schematron-v2-small From $0.14/M tokens](https://modelslab.com/models/inference-net/inference-net-schematron-v2-small) [#### MiniMax/MiniMax: MiniMax M2 minimax-minimax-m2 From $0.64/M tokens](https://modelslab.com/models/minimax/minimax-minimax-m2) [#### DeepSeek/DeepSeek: DeepSeek V3 deepseek-deepseek-chat From $0.64/M tokens](https://modelslab.com/models/deepseek/deepseek-deepseek-chat) [#### Meta/Meta: Llama 3.3 70B Instruct meta-llama-llama-3.3-70b-instruct From $0.36/M tokens](https://modelslab.com/models/meta/meta-llama-llama-3.3-70b-instruct) [#### DeepSeek/DeepSeek-R1 deepseek-ai-DeepSeek-R1-Distill-Llama-70B From $2.00/M tokens](https://modelslab.com/models/deepseek/deepseek-ai-DeepSeek-R1-Distill-Llama-70B) [#### Aion Labs/AionLabs: Aion 3.5 Mini aion-labs-aion-3.5-mini From $1.05/M tokens](https://modelslab.com/models/aion-labs/aion-labs-aion-3.5-mini) [#### Inference Net/Inference.net: Schematron V2 Turbo inference-net-schematron-v2-turbo From $0.09/M tokens](https://modelslab.com/models/inference-net/inference-net-schematron-v2-turbo) About 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... ### Technical Specifications Model IDopenai-gpt-6.1-terra-pro CategoryLLM Models TaskText Generation Price$3 per million tokens AddedOctober 27, 2026 ### Key Features - Chat completion and multi-turn conversation API - Streaming response with token-by-token output - Function calling and tool use support - System prompts and role-based messaging - JSON mode and structured output ### Quick Start Integrate OpenAI: GPT-6.1 Terra Pro into your application with a single API call. Get your API key from the [pricing page](https://modelslab.com/pricing) to get started. PythonJavaScriptcURLPHP ``` import requests import json url = "https://modelslab.com/api/v7/llm/chat/completions" headers = { "Content-Type": "application/json" } data = { "model_id": "openai-gpt-6.1-terra-pro", "messages": [ { "role": "user", "content": "Hello!" } ], "max_tokens": 1000, "key": "YOUR_API_KEY" } try: response = requests.post(url, headers=headers, json=data) response.raise_for_status() # Raises an HTTPError for bad responses (4XX or 5XX) result = response.json() print("API Response:") print(json.dumps(result, indent=2)) except requests.exceptions.HTTPError as http_err: print(f"HTTP error occurred: {http_err} - {response.text}") except Exception as err: print(f"Other error occurred: {err}") ``` ### Pricing OpenAI: GPT-6.1 Terra Pro API costs $3 per million tokens. Plans start at $21/month, and open-source models are unlimited on the $149/month plan. [View pricing plans](https://modelslab.com/pricing) ### Use Cases - AI chatbots and virtual assistants - Code generation and developer tools - Content writing and copywriting automation - Data analysis, summarization, and extraction [Browse LLM Models](https://modelslab.com/models?feature=llmaster) [More from OpenAI](https://modelslab.com/models/open_router) [View Pricing](https://modelslab.com/pricing) OpenAI: GPT-6.1 Terra Pro FAQ --- ### What is 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... ### How do I use the OpenAI: GPT-6.1 Terra Pro API? You can integrate OpenAI: GPT-6.1 Terra Pro into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "openai-gpt-6.1-terra-pro" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does OpenAI: GPT-6.1 Terra Pro cost? OpenAI: GPT-6.1 Terra Pro costs $3 per million tokens. ModelsLab plans start at $21/month (Basic), and the $149/month Open Source plan includes unlimited generation on open-source models. ### What is the OpenAI: GPT-6.1 Terra Pro model ID? The model ID for OpenAI: GPT-6.1 Terra Pro is "openai-gpt-6.1-terra-pro". Use this ID in your API requests to specify this model. ### Do I need a paid plan to use OpenAI: GPT-6.1 Terra Pro? Yes. ModelsLab is subscription-based with no free tier — plans start at $21/month (Basic, 3,250 API calls). The $149/month Open Source Unlimited plan includes unlimited generation across open-source models; premium third-party models are billed per call from your wallet. --- *This markdown version is optimized for AI agents and LLMs.* **Links:** - [Website](https://modelslab.com) - [API Documentation](https://docs.modelslab.com) - [Blog](https://modelslab.com/blog) --- *Generated by ModelsLab - 2026-11-03*