Model Comparison
GPT-4o mini Realtime (Dec '24)
vs. GPT-5.6 Luna (high)
Comparing 2 AI models · 4 benchmarks · OpenAI
Recommended Pick
OpGPT-4o mini Realtime (Dec '24)4 metric winsStrongest on: Input price, Output price, TTFT
Lowest Price
GPT-4o mini Realtime (Dec '24)
$0.00/1M input price
Best for Coding
GPT-5.6 Luna (high)
63.3 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
GPT-4o mini Realtime (Dec '24) is ∞x cheaper on input tokens than GPT-5.6 Luna (high).
Top-pick rationale
GPT-4o mini Realtime (Dec '24) wins 4 measurable categories, including Input price, Output price, TTFT, Latency.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-4o mini Realtime (Dec '24)
OpenAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
GPT-5.6 Luna (high)
OpenAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Chat with leading AI models
Use Claude, ChatGPT, Gemini alongside with EU-Hosted Models like Deepseek, Qwen & Kimi.
EU-hosted inference
Servers in Germany & Finland. Designed to meet strict GDPR and ISO 27001 compliance requirements.
Full Comparison
| Metric | Top Pick Op GPT-4o mini Realtime (Dec '24) | Op GPT-5.6 Luna (high) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.00/1M | $0.20/1M |
| Output Cost | $0.00/1M | $1.20/1M |
| Blended (3:1) | — | $0.45/1M |
| Specifications | ||
| Organization | OpenAI | OpenAI |
| Release Date | Dec 17, 2024 | Jul 9, 2026 |
| Performance & Speed | ||
| Throughput | — | 172.1 tok/s |
| TTFT | — | 8018ms |
| Latency | — | 8018ms |
| Composite Indices | ||
| Value Score | — | 100.0 |
| Reasoning Score | — | 55.6 |
| Intelligence | — | 46.1 |
| Coding | — | 63.3 |
| Standard Benchmarks | ||
| GPQA | — | 89.2% |
| HLE | — | 31.6% |
| SciCode | — | 50.7% |
| LCR | — | 69.0% |
Key Takeaways
GPT-4o mini Realtime (Dec '24) offers the best value at $0.00/1M,making it ideal for high-volume applications and cost-conscious projects.
GPT-5.6 Luna (high) reaches a 63.3 coding index,making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-4o mini Realtime (Dec '24)
- Cost-sensitive applications
- High-volume processing
GPT-5.6 Luna (high)
- Code generation
- Software development
