Reka CorevsGPT-4o
Reka AI vs OpenAI — Side-by-side model comparison
Head-to-Head Comparison
| Metric | Reka Core | GPT-4o |
|---|---|---|
| Provider | ||
| Arena Rank | — | #2 |
| Context Window | 128K | 128K |
| Input Pricing | $3.00/1M tokens | $2.50/1M tokens |
| Output Pricing | $15.00/1M tokens | $10.00/1M tokens |
| Parameters | Undisclosed | ~200B (est.) |
| Open Source | No | No |
| Best For | Multimodal reasoning, video understanding, analysis | General purpose, coding, analysis |
| Release Date | Apr 15, 2024 | — |
Reka Core
Reka Core is Reka AI's flagship multimodal model capable of understanding text, images, video, and audio natively. Founded by former Google DeepMind researchers, Reka built one of the few models with true video understanding capabilities. Core delivers competitive performance with leading frontier models while offering unique multimodal input flexibility.
View Reka AI profile →GPT-4o
GPT-4o is OpenAI's flagship multimodal model, capable of processing text, images, and audio in a unified architecture. The 'o' stands for 'omni,' reflecting its ability to seamlessly handle multiple input types. With a 128K token context window and competitive pricing, it strikes an optimal balance between capability and cost-effectiveness. GPT-4o delivers fast response times while maintaining strong performance across coding, analysis, creative writing, and visual understanding tasks. It powers ChatGPT's default experience and is one of the most widely deployed AI models globally, serving millions of API calls daily. The model supports function calling, JSON mode, and structured outputs, making it highly versatile for production applications. Its combination of speed, quality, and multimodal capabilities makes it the go-to choice for most general-purpose AI applications.
View OpenAI profile →Key Differences: Reka Core vs GPT-4o
GPT-4o is 1.4x cheaper on average, making it the better choice for high-volume applications.
When to use Reka Core
- +Quality matters more than cost
- +Your use case involves multimodal reasoning, video understanding, analysis
When to use GPT-4o
- +Budget is a concern and you need cost efficiency
- +Your use case involves general purpose, coding, analysis
Cost Analysis
At current pricing, GPT-4o is 1.4x more affordable than Reka Core. For a typical enterprise workload processing 100M tokens per month:
Reka Core monthly cost
$900
100M tokens/mo (50/50 in/out)
GPT-4o monthly cost
$625
100M tokens/mo (50/50 in/out)
The Verdict
GPT-4o wins our head-to-head comparison with 4 out of 5 category wins. It's the stronger choice for general purpose, coding, analysis, though Reka Core holds an edge in multimodal reasoning, video understanding, analysis.
Last compared: March 2026 · Data sourced from public benchmarks and official pricing pages