---
title: OpenAI: GPT 5 API | Text Generation | ModelsLab
description: Advanced LLM with 400K token context, multimodal input (text/image), superior reasoning/coding (88% benchmarks), multi-stage routing, and agentic.
url: https://modelslab.com/models/openai/openai-gpt-5/api.md
canonical: https://modelslab.com/models/openai/openai-gpt-5/api.md
type: product
component: Playground/LLM/Index
generated_at: 2026-04-15T02:04:09.384940Z
---

OpenAI: GPT-5
---

 [LLMs.txt](https://modelslab.com/models/open_router/openai-gpt-5/llms.txt) [.md](https://modelslab.com/models/openai/openai-gpt-5.md)

openai-gpt-5 openai Closed Source Model $5.625000 / call

OpenAI: GPT-5
---

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

Send

### OpenAI: GPT-5

openai openai-gpt-5

Copy model ID

PricingInput $1.25 / 1M tokens

Output $10.00 / 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 Tokens1000

Top P0.9

Frequency Penalty0

Presence Penalty0

Model Info

Support

Related Models
---

Discover similar models you might be interested in

 [View all LLM Models](https://modelslab.com/models?feature=llmaster)

[ZG](https://modelslab.com/models/open_router/z-ai-glm-4.5-air)[Open Router](https://modelslab.com/models/open_router)

 [Z.ai: GLM 4.5 Air

Closed Source Model](https://modelslab.com/models/open_router/z-ai-glm-4.5-air)

[ML](https://modelslab.com/models/meta/meta-llama-Llama-3.2-90B-Vision-Instruct-Turbo)[ModelsLab](https://modelslab.com/models/meta)

 [Meta Llama 3.2 90B Vision Instruct Turbo

Closed Source Model](https://modelslab.com/models/meta/meta-llama-Llama-3.2-90B-Vision-Instruct-Turbo)

[NN](https://modelslab.com/models/together_ai/nvidia-NVIDIA-Nemotron-3-Super-120B-A12B-BF16)[Together AI](https://modelslab.com/models/together_ai)

 [Nvidia Nemotron 3 Super 120B A12b Bf16

Closed Source Model](https://modelslab.com/models/together_ai/nvidia-NVIDIA-Nemotron-3-Super-120B-A12B-BF16)

[DR](https://modelslab.com/models/open_router/deepseek-deepseek-r1-0528)[Open Router](https://modelslab.com/models/open_router)

 [DeepSeek: R1 0528

Closed Source Model](https://modelslab.com/models/open_router/deepseek-deepseek-r1-0528)

[MM](https://modelslab.com/models/open_router/minimax-minimax-m2.7)[Open Router](https://modelslab.com/models/open_router)

 [MiniMax: MiniMax M2.7

Closed Source Model](https://modelslab.com/models/open_router/minimax-minimax-m2.7)

[BE](https://modelslab.com/models/open_router/baidu-ernie-4.5-21b-a3b-thinking)[Open Router](https://modelslab.com/models/open_router)

 [Baidu: ERNIE 4.5 21B A3B Thinking

Closed Source Model](https://modelslab.com/models/open_router/baidu-ernie-4.5-21b-a3b-thinking)

[ML](https://modelslab.com/models/together_ai/meta-llama-Llama-2-7b-chat-hf)[Together AI](https://modelslab.com/models/together_ai)

 [meta-llama/Llama-2-7b-chat-hf

Closed Source Model](https://modelslab.com/models/together_ai/meta-llama-Llama-2-7b-chat-hf)

[N8](https://modelslab.com/models/together_ai/nim-mistralai-mixtral-8x22b-instruct-v01)[Together AI](https://modelslab.com/models/together_ai)

 [nim/mistralai/mixtral-8x22b-instruct-v01

Closed Source Model](https://modelslab.com/models/together_ai/nim-mistralai-mixtral-8x22b-instruct-v01)

[SS](https://modelslab.com/models/open_router/stepfun-step-3.5-flash)[Open Router](https://modelslab.com/models/open_router)

 [StepFun: Step 3.5 Flash

Closed Source Model](https://modelslab.com/models/open_router/stepfun-step-3.5-flash)

[G2](https://modelslab.com/models/together_ai/google-gemma-2-27b-it)[Together AI](https://modelslab.com/models/together_ai)

 [Gemma-2 Instruct (27B)

Closed Source Model](https://modelslab.com/models/together_ai/google-gemma-2-27b-it)

[AO](https://modelslab.com/models/open_router/allenai-olmo-3.1-32b-instruct)[Open Router](https://modelslab.com/models/open_router)

 [AllenAI: Olmo 3.1 32B Instruct

Closed Source Model](https://modelslab.com/models/open_router/allenai-olmo-3.1-32b-instruct)

[QV](https://modelslab.com/models/qwen/Qwen-Qwen2-VL-72B-Instruct)[ModelsLab](https://modelslab.com/models/qwen)

 [Qwen2-VL (72B) Instruct

Closed Source Model](https://modelslab.com/models/qwen/Qwen-Qwen2-VL-72B-Instruct)

[II](https://modelslab.com/models/open_router/inflection-inflection-3-pi)[Open Router](https://modelslab.com/models/open_router)

 [Inflection: Inflection 3 Pi

Closed Source Model](https://modelslab.com/models/open_router/inflection-inflection-3-pi)

[ML](https://modelslab.com/models/open_router/meta-llama-llama-3.1-8b-instruct)[Open Router](https://modelslab.com/models/open_router)

 [Meta: Llama 3.1 8B Instruct

Closed Source Model](https://modelslab.com/models/open_router/meta-llama-llama-3.1-8b-instruct)

[DV](https://modelslab.com/models/together_ai/deepseek-ai-DeepSeek-V3.1-Terminus)[Together AI](https://modelslab.com/models/together_ai)

 [Deepseek V3.1 Terminus

Closed Source Model](https://modelslab.com/models/together_ai/deepseek-ai-DeepSeek-V3.1-Terminus)

[Q2](https://modelslab.com/models/together_ai/Qwen-Qwen3-235B-A22B-Instruct-2507-tput)[Together AI](https://modelslab.com/models/together_ai)

 [Qwen3 235B A22B Instruct 2507 FP8 Throughput

Closed Source Model](https://modelslab.com/models/together_ai/Qwen-Qwen3-235B-A22B-Instruct-2507-tput)

[AA](https://modelslab.com/models/arcee_ai/arcee-ai-coder-large)[ModelsLab](https://modelslab.com/models/arcee_ai)

 [Arcee AI Coder-Large

Closed Source Model](https://modelslab.com/models/arcee_ai/arcee-ai-coder-large)

[ML](https://modelslab.com/models/open_router/mistralai-mistral-large-2411)[Open Router](https://modelslab.com/models/open_router)

 [Mistral Large 2411

Closed Source Model](https://modelslab.com/models/open_router/mistralai-mistral-large-2411)

About OpenAI: GPT-5
---

GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy...

### Technical Specifications

Model IDopenai-gpt-5CategoryLLM ModelsTaskText GenerationPrice$5.625000 per million tokensAddedFebruary 20, 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-5 into your application with a single API call. Get your API key from the [pricing page](https://modelslab.com/pricing) to get started.

PythonJavaScriptcURLPHP

```
<code>import requests
import json

url = "https://modelslab.com/api/v7/llm/chat/completions"

headers = {
    "Content-Type": "application/json"
}

data = {
        "model_id": "openai-gpt-5",
        "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}")</code>
```

View the [full API documentation](https://modelslab.com/models/openai/openai-gpt-5/api) for SDKs, code examples in Python, JavaScript, and more.

### Pricing

OpenAI: GPT-5 API costs $5.625000 per million tokens. Pay only for what you use with no minimum commitments. [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-5 FAQ
---

### What is OpenAI: GPT-5?

GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy...

### How do I use the OpenAI: GPT-5 API?

You can integrate OpenAI: GPT-5 into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "openai-gpt-5" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation.

### How much does OpenAI: GPT-5 cost?

OpenAI: GPT-5 costs $5.625000 per million tokens. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started.

### What is the OpenAI: GPT-5 model ID?

The model ID for OpenAI: GPT-5 is "openai-gpt-5". Use this ID in your API requests to specify this model.

### Does OpenAI: GPT-5 have a free tier?

Yes, ModelsLab offers a free tier that lets you try OpenAI: GPT-5 and other AI models. Sign up to get free API credits and start building immediately.

---

*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 - 2026-04-15*