Reka CorevsClaude Opus 4
Reka AI vs Anthropic — Side-by-side model comparison
Head-to-Head Comparison
| Metric | Reka Core | Claude Opus 4 |
|---|---|---|
| Provider | ||
| Arena Rank | — | #1 |
| Context Window | 128K | 200K |
| Input Pricing | $3.00/1M tokens | $5.00/1M tokens |
| Output Pricing | $15.00/1M tokens | $25.00/1M tokens |
| Parameters | Undisclosed | Undisclosed |
| Open Source | No | No |
| Best For | Multimodal reasoning, video understanding, analysis | Complex reasoning, coding, agentic tasks |
| Release Date | Apr 15, 2024 | May 22, 2025 |
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 →Claude Opus 4
Claude Opus 4 is Anthropic's most powerful AI model, holding the #1 position on the Chatbot Arena leaderboard. It represents a breakthrough in extended thinking and agentic capabilities, able to work autonomously on complex multi-step tasks for hours. With a 200K token context window, it excels at analyzing entire codebases, lengthy legal documents, and research papers in a single pass. The model demonstrates exceptional performance in coding (setting new benchmarks on SWE-bench), advanced reasoning, and nuanced writing tasks. Its agentic capabilities allow it to use tools, navigate computers, and execute multi-step workflows with minimal human oversight. Opus 4 is the preferred choice for enterprises requiring the highest quality output on mission-critical tasks where accuracy and depth matter more than speed or cost.
View Anthropic profile →Key Differences: Reka Core vs Claude Opus 4
Reka Core is 1.7x cheaper on average, making it the better choice for high-volume applications.
Claude Opus 4 supports a larger context window (200K), allowing it to process longer documents in a single request.
When to use Reka Core
- +Budget is a concern and you need cost efficiency
- +Your use case involves multimodal reasoning, video understanding, analysis
When to use Claude Opus 4
- +Quality matters more than cost
- +You need to process long documents (200K context)
- +Your use case involves complex reasoning, coding, agentic tasks
Cost Analysis
At current pricing, Reka Core is 1.7x more affordable than Claude Opus 4. For a typical enterprise workload processing 100M tokens per month:
Reka Core monthly cost
$900
100M tokens/mo (50/50 in/out)
Claude Opus 4 monthly cost
$1,500
100M tokens/mo (50/50 in/out)
The Verdict
This is a close matchup. Reka Core and Claude Opus 4 each win in different categories, making the choice highly dependent on your use case. Choose Reka Core for multimodal reasoning, video understanding, analysis. Choose Claude Opus 4 for complex reasoning, coding, agentic tasks.
Last compared: March 2026 · Data sourced from public benchmarks and official pricing pages