---
title: Reka Flash 3 API | Text Generation | ModelsLab
description: Build with Reka Flash 3 API by Rekaai. Text generation, chat, code, and reasoning. Pay-per-use. Free tier.
url: https://modelslab.com/models/rekaai/rekaai-reka-flash-3.md
canonical: https://modelslab.com/models/rekaai/rekaai-reka-flash-3.md
type: product
component: Playground/LLM/Index
generated_at: 2026-04-14T22:32:38.631327Z
---

Reka Flash 3
---

 [LLMs.txt](https://modelslab.com/models/open_router/rekaai-reka-flash-3/llms.txt) [.md](https://modelslab.com/models/rekaai/rekaai-reka-flash-3.md)

rekaai-reka-flash-3 rekaai Closed Source Model $0.150000 / call

Reka Flash 3
---

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

### Reka Flash 3

rekaai rekaai-reka-flash-3

Copy model ID

PricingInput $0.10 / 1M tokens

Output $0.20 / 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)

[DV](https://modelslab.com/models/deepseek/deepseek-ai-DeepSeek-V3)[ModelsLab](https://modelslab.com/models/deepseek)

 [DeepSeek V3-0324

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

[MM](https://modelslab.com/models/together_ai/MiniMaxAI-MiniMax-M2)[Together AI](https://modelslab.com/models/together_ai)

 [MiniMax M2

Closed Source Model](https://modelslab.com/models/together_ai/MiniMaxAI-MiniMax-M2)

[MD](https://modelslab.com/models/open_router/mistralai-devstral-2512)[Open Router](https://modelslab.com/models/open_router)

 [Mistral: Devstral 2 2512

Closed Source Model](https://modelslab.com/models/open_router/mistralai-devstral-2512)

[L3](https://modelslab.com/models/together_ai/nvidia-Llama-3.1-Nemotron-70B-Instruct-HF)[Together AI](https://modelslab.com/models/together_ai)

 [Llama 3.1 Nemotron 70B Instruct HF

Closed Source Model](https://modelslab.com/models/together_ai/nvidia-Llama-3.1-Nemotron-70B-Instruct-HF)

[NN](https://modelslab.com/models/open_router/nvidia-nemotron-3-super-120b-a12b-free)[Open Router](https://modelslab.com/models/open_router)

 [NVIDIA: Nemotron 3 Super (free)

Closed Source Model](https://modelslab.com/models/open_router/nvidia-nemotron-3-super-120b-a12b-free)

[QQ](https://modelslab.com/models/open_router/qwen-qwen3.5-35b-a3b)[Open Router](https://modelslab.com/models/open_router)

 [Qwen: Qwen3.5-35B-A3B

Closed Source Model](https://modelslab.com/models/open_router/qwen-qwen3.5-35b-a3b)

[Q7](https://modelslab.com/models/together_ai/Qwen-Qwen2.5-7B)[Together AI](https://modelslab.com/models/together_ai)

 [Qwen2.5 7B

Closed Source Model](https://modelslab.com/models/together_ai/Qwen-Qwen2.5-7B)

[OG](https://modelslab.com/models/open_router/openai-gpt-oss-120b-free)[Open Router](https://modelslab.com/models/open_router)

 [OpenAI: gpt-oss-120b (free)

Closed Source Model](https://modelslab.com/models/open_router/openai-gpt-oss-120b-free)

[AN](https://modelslab.com/models/open_router/amazon-nova-lite-v1)[Open Router](https://modelslab.com/models/open_router)

 [Amazon: Nova Lite 1.0

Closed Source Model](https://modelslab.com/models/open_router/amazon-nova-lite-v1)

[PS](https://modelslab.com/models/open_router/perplexity-sonar-pro)[Open Router](https://modelslab.com/models/open_router)

 [Perplexity: Sonar Pro

Closed Source Model](https://modelslab.com/models/open_router/perplexity-sonar-pro)

[CC](https://modelslab.com/models/open_router/cohere-command-r7b-12-2024)[Open Router](https://modelslab.com/models/open_router)

 [Cohere: Command R7B (12-2024)

Closed Source Model](https://modelslab.com/models/open_router/cohere-command-r7b-12-2024)

[LL](https://modelslab.com/models/open_router/liquid-lfm-2.5-1.2b-thinking-free)[Open Router](https://modelslab.com/models/open_router)

 [LiquidAI: LFM2.5-1.2B-Thinking (free)

Closed Source Model](https://modelslab.com/models/open_router/liquid-lfm-2.5-1.2b-thinking-free)

[NN](https://modelslab.com/models/open_router/nvidia-nemotron-3-super-120b-a12b)[Open Router](https://modelslab.com/models/open_router)

 [NVIDIA: Nemotron 3 Super

Closed Source Model](https://modelslab.com/models/open_router/nvidia-nemotron-3-super-120b-a12b)

[G5](https://modelslab.com/models/together_ai/zai-org-GLM-5.1)[Together AI](https://modelslab.com/models/together_ai)

 [GLM 5.1 FP4

Closed Source Model](https://modelslab.com/models/together_ai/zai-org-GLM-5.1)

[MM](https://modelslab.com/models/open_router/mistralai-mistral-nemo)[Open Router](https://modelslab.com/models/open_router)

 [Mistral: Mistral Nemo

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

[GG](https://modelslab.com/models/open_router/google-gemma-4-31b-it-free)[Open Router](https://modelslab.com/models/open_router)

 [Google: Gemma 4 31B (free)

Closed Source Model](https://modelslab.com/models/open_router/google-gemma-4-31b-it-free)

[N3](https://modelslab.com/models/together_ai/nim-meta-llama-3.1-8b-instruct)[Together AI](https://modelslab.com/models/together_ai)

 [nim/meta/llama-3.1-8b-instruct

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

[QQ](https://modelslab.com/models/open_router/qwen-qwen-plus-2025-07-28)[Open Router](https://modelslab.com/models/open_router)

 [Qwen: Qwen Plus 0728

Closed Source Model](https://modelslab.com/models/open_router/qwen-qwen-plus-2025-07-28)

About Reka Flash 3
---

Reka Flash 3 is a general-purpose, instruction-tuned large language model with 21 billion parameters, developed by Reka. It excels at general chat, coding tasks, instruction-following, and function calling. Featuring a...

### Technical Specifications

Model IDrekaai-reka-flash-3CategoryLLM ModelsTaskText GenerationPrice$0.150000 per million tokensAddedMarch 31, 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 Reka Flash 3 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": "rekaai-reka-flash-3",
        "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/rekaai/rekaai-reka-flash-3/api) for SDKs, code examples in Python, JavaScript, and more.

### Pricing

Reka Flash 3 API costs $0.150000 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 Rekaai](https://modelslab.com/models/open_router) [View Pricing](https://modelslab.com/pricing)

Reka Flash 3 FAQ
---

### What is Reka Flash 3?

Reka Flash 3 is a general-purpose, instruction-tuned large language model with 21 billion parameters, developed by Reka. It excels at general chat, coding tasks, instruction-following, and function calling. Featuring a...

### How do I use the Reka Flash 3 API?

You can integrate Reka Flash 3 into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "rekaai-reka-flash-3" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation.

### How much does Reka Flash 3 cost?

Reka Flash 3 costs $0.150000 per million tokens. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started.

### What is the Reka Flash 3 model ID?

The model ID for Reka Flash 3 is "rekaai-reka-flash-3". Use this ID in your API requests to specify this model.

### Does Reka Flash 3 have a free tier?

Yes, ModelsLab offers a free tier that lets you try Reka Flash 3 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*