app.py

"""
AI API Playground 2026 — NexaAPI Interactive Demo
Tabs: Image Generation | Text/LLM | Text-to-Speech | Cost Calculator
"""

import gradio as gr

# ─── Cost Calculator Data ───────────────────────────────────────────────────

PRICING = {
    "Image Generation (per image)": {
        "NexaAPI 🏆": 0.003,
        "OpenAI DALL-E 3": 0.040,
        "Stability AI": 0.020,
        "Replicate": 0.015,
        "FAL.ai": 0.012,
    },
    "LLM (per 1M tokens)": {
        "NexaAPI 🏆": 0.50,
        "OpenAI GPT-4o": 5.00,
        "Anthropic Claude 3.5": 3.00,
        "Google Gemini 1.5 Pro": 3.50,
        "Together AI": 1.00,
    },
    "Text-to-Speech (per 1M chars)": {
        "NexaAPI 🏆": 1.00,
        "ElevenLabs": 22.00,
        "OpenAI TTS": 15.00,
        "Google TTS": 4.00,
        "Azure TTS": 4.00,
    },
}

# ─── Tab Functions ───────────────────────────────────────────────────────────

def show_image_demo(prompt, style):
    """Show image generation demo with code."""
    styles = {
        "Photorealistic": "photorealistic, 8k, detailed",
        "Anime": "anime style, vibrant colors",
        "Oil Painting": "oil painting, classical art style",
        "Watercolor": "watercolor painting, soft colors",
    }
    style_suffix = styles.get(style, "")
    full_prompt = f"{prompt}, {style_suffix}" if style_suffix else prompt
    
    code = f'''```python
import nexaapi

# Image Generation — $0.003/image (13x cheaper than DALL-E 3!)
client = nexaapi.Client(api_key="YOUR_API_KEY")

result = client.image.generate(
    prompt="{full_prompt}",
    model="flux-schnell",  # or stable-diffusion-xl, flux-pro
    width=1024,
    height=1024,
    steps=4
)

# Save the image
with open("output.png", "wb") as f:
    f.write(result.image_bytes)

print(f"Generated! Cost: $0.003")
print(f"URL: {{result.url}}")
```

**vs OpenAI DALL-E 3**: Same quality, 13x cheaper ($0.003 vs $0.04)

### 📊 Cost for 1,000 images:
- **NexaAPI**: $3.00 ✅
- OpenAI DALL-E 3: $40.00 ❌
- Stability AI: $20.00 ❌
- FAL.ai: $12.00 ❌

### 🔗 Get Started Free
- [nexa-api.com](https://nexa-api.com) — 100 free images, no credit card!
- [pip install nexaapi](https://pypi.org/project/nexaapi)
'''
    
    preview = f"""
### 🖼️ Your Prompt
**"{full_prompt}"**

This would generate a high-quality image using NexaAPI's FLUX or Stable Diffusion models.

**Cost**: $0.003 per image
**Speed**: ~2-4 seconds
**Resolution**: Up to 2048×2048

*Note: This is a demo playground. Sign up at [nexa-api.com](https://nexa-api.com) to generate real images!*
"""
    return preview, code


def show_llm_demo(prompt, model):
    """Show LLM demo with code."""
    models_info = {
        "Claude 3.5 Sonnet": ("claude-3-5-sonnet", "$0.50/1M tokens"),
        "GPT-4o": ("gpt-4o", "$0.50/1M tokens"),
        "Gemini 1.5 Pro": ("gemini-1.5-pro", "$0.50/1M tokens"),
        "Llama 3.1 70B": ("llama-3.1-70b", "$0.30/1M tokens"),
    }
    
    model_id, price = models_info.get(model, ("claude-3-5-sonnet", "$0.50/1M tokens"))
    
    sample_responses = {
        "Claude 3.5 Sonnet": f"I'd be happy to help with: '{prompt}'. This is a demonstration of NexaAPI's LLM capabilities — access Claude, GPT-4o, Gemini, and 50+ more models through one unified API at the lowest prices in 2026.",
        "GPT-4o": f"Regarding your query: '{prompt}' — NexaAPI provides access to GPT-4o and all major AI models at 90% less cost than going directly to OpenAI.",
        "Gemini 1.5 Pro": f"Processing your request: '{prompt}' — With NexaAPI, you get Gemini 1.5 Pro access at $0.50/1M tokens vs Google's $3.50/1M tokens.",
        "Llama 3.1 70B": f"Here's my response to '{prompt}' — Llama 3.1 70B via NexaAPI is one of the most cost-effective options for high-quality open-source LLM inference.",
    }
    
    response = sample_responses.get(model, f"Response to: {prompt}")
    
    code = f'''```python
import nexaapi

# LLM — 90% cheaper than direct API access!
client = nexaapi.Client(api_key="YOUR_API_KEY")

response = client.chat.complete(
    model="{model_id}",
    messages=[
        {{"role": "user", "content": "{prompt}"}}
    ],
    max_tokens=1000
)

print(response.choices[0].message.content)
print(f"Tokens used: {{response.usage.total_tokens}}")
print(f"Cost: {{response.usage.total_tokens / 1_000_000 * 0.50:.6f}}")
```

**Price**: {price} (vs $5.00/1M tokens for OpenAI direct)

### 🔗 Get Started Free
- [nexa-api.com](https://nexa-api.com) — Free tier available!
- [pip install nexaapi](https://pypi.org/project/nexaapi)
'''
    
    return f"**{model} Response (Demo):**\n\n{response}", code


def show_tts_demo(text, voice):
    """Show TTS demo with code."""
    voices = {
        "Nova (Female, Warm)": "nova",
        "Alloy (Neutral)": "alloy",
        "Echo (Male, Deep)": "echo",
        "Shimmer (Female, Clear)": "shimmer",
    }
    voice_id = voices.get(voice, "nova")
    
    code = f'''```python
import nexaapi

# Text-to-Speech — 22x cheaper than ElevenLabs!
client = nexaapi.Client(api_key="YOUR_API_KEY")

audio = client.tts.generate(
    text="{text[:50]}...",
    voice="{voice_id}",
    model="tts-1-hd",
    speed=1.0
)

# Save audio file
with open("output.mp3", "wb") as f:
    f.write(audio.audio_bytes)

print(f"Generated {len(text)} characters")
print(f"Cost: ${{len(text) / 1_000_000:.6f}}")  # $1.00/1M chars
```

**Price**: $1.00/1M characters
- vs ElevenLabs: $22.00/1M chars (22x more expensive!)
- vs OpenAI TTS: $15.00/1M chars (15x more expensive!)

### 🔗 Get Started Free
- [nexa-api.com](https://nexa-api.com) — 100 free TTS generations!
- [pip install nexaapi](https://pypi.org/project/nexaapi)
'''
    
    char_count = len(text)
    cost = char_count / 1_000_000 * 1.00
    elevenlabs_cost = char_count / 1_000_000 * 22.00
    
    preview = f"""
### 🔊 TTS Preview
**Text**: "{text[:100]}{'...' if len(text) > 100 else ''}"
**Voice**: {voice}
**Characters**: {char_count:,}

**Cost with NexaAPI**: ${cost:.6f}
**Cost with ElevenLabs**: ${elevenlabs_cost:.6f}
**Your savings**: ${elevenlabs_cost - cost:.6f} (22x cheaper!)

*Note: This is a demo. Sign up at [nexa-api.com](https://nexa-api.com) to generate real audio!*
"""
    return preview, code


def calculate_costs(api_type, quantity):
    """Calculate and compare costs."""
    if quantity <= 0:
        return "Please enter a quantity > 0"
    
    prices = PRICING.get(api_type, {})
    if not prices:
        return "Invalid API type"
    
    nexa_cost = prices["NexaAPI 🏆"] * quantity
    lines = [f"## Cost for {quantity:,} units — {api_type}\n"]
    lines.append("| Provider | Total Cost | vs NexaAPI |")
    lines.append("|----------|-----------|------------|")
    
    for provider, price in sorted(prices.items(), key=lambda x: x[1]):
        total = price * quantity
        if provider == "NexaAPI 🏆":
            lines.append(f"| **{provider}** | **${total:.2f}** | ✅ Best Price! |")
        else:
            mult = total / nexa_cost
            lines.append(f"| {provider} | ${total:.2f} | {mult:.1f}x more expensive |")
    
    lines.append(f"\n💡 **NexaAPI saves you ${(max(prices.values()) - prices['NexaAPI 🏆']) * quantity:.2f}** vs the most expensive provider!")
    lines.append(f"\n🚀 [Start Free at nexa-api.com](https://nexa-api.com) — No credit card required!")
    
    return "\n".join(lines)


# ─── Build UI ────────────────────────────────────────────────────────────────

with gr.Blocks(
    title="AI API Playground 2026 — NexaAPI",
    theme=gr.themes.Soft(),
) as demo:
    
    gr.Markdown("""
    # 🚀 AI API Playground 2026
    ## Access 56+ AI Models via One API — NexaAPI
    
    **The cheapest way to access Image Generation, LLM, TTS, and Video APIs in 2026.**
    Start with **100 free generations** — no credit card required!
    
    🌐 [nexa-api.com](https://nexa-api.com) | 📦 [PyPI](https://pypi.org/project/nexaapi) | 📦 [npm](https://npmjs.com/package/nexaapi) | 🔗 [RapidAPI](https://rapidapi.com/user/nexaquency)
    """)
    
    with gr.Tabs():
        
        # ── Tab 1: Image Generation ──────────────────────────────────────────
        with gr.TabItem("🖼️ Image Generation"):
            gr.Markdown("### Generate AI Images — $0.003/image (13x cheaper than DALL-E 3!)")
            
            with gr.Row():
                with gr.Column():
                    img_prompt = gr.Textbox(
                        label="Image Prompt",
                        placeholder="A futuristic city at sunset with flying cars...",
                        value="A beautiful mountain landscape with aurora borealis",
                        lines=3
                    )
                    img_style = gr.Dropdown(
                        choices=["Photorealistic", "Anime", "Oil Painting", "Watercolor"],
                        value="Photorealistic",
                        label="Style"
                    )
                    img_btn = gr.Button("🎨 Generate Code & Preview", variant="primary")
                
                with gr.Column():
                    img_preview = gr.Markdown(label="Preview")
                    img_code = gr.Markdown(label="Code Example")
            
            img_btn.click(show_image_demo, inputs=[img_prompt, img_style], outputs=[img_preview, img_code])
        
        # ── Tab 2: LLM / Text ────────────────────────────────────────────────
        with gr.TabItem("💬 LLM / Text"):
            gr.Markdown("### Access 20+ LLM Models — From $0.30/1M tokens (10x cheaper than GPT-4o!)")
            
            with gr.Row():
                with gr.Column():
                    llm_prompt = gr.Textbox(
                        label="Your Prompt",
                        placeholder="Explain quantum computing in simple terms...",
                        value="What are the key advantages of using NexaAPI for AI development?",
                        lines=4
                    )
                    llm_model = gr.Dropdown(
                        choices=["Claude 3.5 Sonnet", "GPT-4o", "Gemini 1.5 Pro", "Llama 3.1 70B"],
                        value="Claude 3.5 Sonnet",
                        label="Model"
                    )
                    llm_btn = gr.Button("🤖 Generate Response & Code", variant="primary")
                
                with gr.Column():
                    llm_response = gr.Markdown(label="Response Preview")
                    llm_code = gr.Markdown(label="Code Example")
            
            llm_btn.click(show_llm_demo, inputs=[llm_prompt, llm_model], outputs=[llm_response, llm_code])
        
        # ── Tab 3: TTS ───────────────────────────────────────────────────────
        with gr.TabItem("🔊 Text-to-Speech"):
            gr.Markdown("### Convert Text to Speech — $1.00/1M chars (22x cheaper than ElevenLabs!)")
            
            with gr.Row():
                with gr.Column():
                    tts_text = gr.Textbox(
                        label="Text to Convert",
                        placeholder="Enter text to convert to speech...",
                        value="Welcome to NexaAPI — the most affordable AI API platform in 2026. Access 56 models including Claude, GPT-4o, Gemini, FLUX, and more.",
                        lines=4
                    )
                    tts_voice = gr.Dropdown(
                        choices=["Nova (Female, Warm)", "Alloy (Neutral)", "Echo (Male, Deep)", "Shimmer (Female, Clear)"],
                        value="Nova (Female, Warm)",
                        label="Voice"
                    )
                    tts_btn = gr.Button("🎙️ Generate Code & Preview", variant="primary")
                
                with gr.Column():
                    tts_preview = gr.Markdown(label="Preview")
                    tts_code = gr.Markdown(label="Code Example")
            
            tts_btn.click(show_tts_demo, inputs=[tts_text, tts_voice], outputs=[tts_preview, tts_code])
        
        # ── Tab 4: Cost Calculator ───────────────────────────────────────────
        with gr.TabItem("💰 Cost Calculator"):
            gr.Markdown("### Calculate Your Savings — See How Much You Overpay with Other Providers")
            
            with gr.Row():
                with gr.Column(scale=1):
                    calc_api = gr.Dropdown(
                        choices=list(PRICING.keys()),
                        value="Image Generation (per image)",
                        label="API Type"
                    )
                    calc_qty = gr.Number(
                        value=10000,
                        label="Monthly Usage (units)",
                        minimum=1
                    )
                    calc_btn = gr.Button("💰 Calculate Costs", variant="primary")
                
                with gr.Column(scale=2):
                    calc_results = gr.Markdown(label="Cost Comparison")
            
            calc_btn.click(calculate_costs, inputs=[calc_api, calc_qty], outputs=[calc_results])
    
    gr.Markdown("""
    ---
    ## 🏆 Why NexaAPI?
    
    - **56+ Models**: Claude, GPT-4o, Gemini, FLUX, Stable Diffusion, Kling, Sora alternatives & more
    - **Lowest Prices**: Up to 95% cheaper than going directly to model providers
    - **One API**: OpenAI-compatible — works with your existing code
    - **Free Tier**: 100 free generations, no credit card required
    - **Fast**: Global CDN, <100ms latency
    
    ### 🔗 Get Started Now
    | Platform | Link |
    |----------|------|
    | 🌐 Website | [nexa-api.com](https://nexa-api.com) |
    | 🐍 Python | [pip install nexaapi](https://pypi.org/project/nexaapi) |
    | 📦 JavaScript | [npm install nexaapi](https://npmjs.com/package/nexaapi) |
    | 🔗 RapidAPI | [rapidapi.com/user/nexaquency](https://rapidapi.com/user/nexaquency) |
    """)

if __name__ == "__main__":
    demo.launch()