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Our Manifesto: Why We Test Every AI Model

August 14, 20245 min readReplyHub Team
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Test Everything. Pick the Best.

Our Testing Philosophy

We don't pick favorites based on brand names. Every model gets tested: Qwen 3 Coder, GPT OSS, OpenAI, and Gemini. We measure speed, quality, reasoning ability, and real-world performance.

Our conclusion? Gemini and Qwen 3 consistently deliver the best balance of speed and quality. GPT OSS is lightning fast but often produces poor results. OpenAI has decent quality but slower performance.

We choose the right model for each task, not the most popular brand.

What Quality AI Actually Means

After testing hundreds of thousands of requests across all major models, we've learned what separates good AI from great AI:

  • Consistent reasoning - Not just pattern matching
  • Natural language - Responses that don't scream "AI"
  • Context understanding - Gets nuance and subtext
  • Reliable performance - Same quality every time

Speed vs Quality: The Real Trade-offs

Here's what our testing revealed about each model's performance:

🥇 Gemini 2.5 Flash

  • • Best overall quality
  • • 1M token context window
  • • Excellent for RAG tasks
  • • Fast and cost-effective
  • • Multimodal capabilities

🥈 Qwen 3 72B

  • • Natural, human-like responses
  • • Strong reasoning capabilities
  • • Good speed-quality balance
  • • Less corporate "AI-speak"
  • • Creative problem solving

⚡ GPT OSS (Cerebras)

  • • Incredibly fast (3000 TPS)
  • • Low cost per token
  • • BUT: Inconsistent quality
  • • Often generic responses
  • • Good for simple tasks only

📊 OpenAI GPT-4

  • • Decent quality responses
  • • Wide knowledge base
  • • BUT: Slower API responses
  • • Higher costs
  • • More templated output

Real-World Performance

📊 Our Latest Benchmark Results

Speed Test (Average Response Time)

  • 🥇 GPT OSS: ~50ms (but low quality)
  • 🥈 Gemini 2.5 Flash: ~150ms (high quality)
  • 🥉 Qwen 3: ~200ms (excellent quality)
  • 4️⃣ OpenAI: ~300ms (decent quality)

Quality Score (Human Evaluations)

  • 🥇 Gemini 2.5 Flash: 8.7/10
  • 🥈 Qwen 3: 8.4/10
  • 🥉 OpenAI: 7.8/10
  • 4️⃣ GPT OSS: 6.2/10

For Indie Builders

You need AI that works reliably, responds quickly, and doesn't break the bank. You don't have time for vendor politics or brand loyalties.

That's why ReplyHub:

  • Defaults to Gemini 2.5 Flash - Best overall performance
  • Offers Qwen 3 - For natural conversation
  • Includes GPT OSS - When speed matters more than quality
  • Tests OpenAI too - You choose what works best
  • Switches automatically - If a model fails, we failover

Our Promise

🧪 Always Testing

We benchmark every new model that comes out

⚡ Speed First

Sub-100ms responses when possible

🎯 Quality Focused

We pick models that actually understand your users

We built ReplyHub because the AI industry is obsessed with brand names instead of performance. Your users don't care if it's OpenAI or Gemini - they care if it works.

We test everything. We pick the best. We ship fast.

That's the ReplyHub way.

Ready to Test Our AI Models?

Compare Gemini, Qwen 3, and GPT OSS side-by-side. See the speed and quality differences yourself.