Reka Flash 3 vs Sonar Reasoning Pro
| Signal | Reka Flash 3 | Delta | Sonar Reasoning Pro |
|---|---|---|---|
Capabilities | 50 | -17 | |
Pricing | 100 | +8 | |
Context window size | 76 | -5 | |
Recency | 39 | +1 | |
Output Capacity | 80 | +60 | |
| Overall Result | 3 wins | of 5 | 2 wins |
Score History
40
current score
Tied
right now
40
current score
Reka Flash 3
rekaai
Sonar Reasoning Pro
Perplexity
Reka Flash 3 saves you $580.00/month
That's $6960.00/year compared to Sonar Reasoning Pro at your current usage level of 100K calls/month.
| Metric | Reka Flash 3 | Sonar Reasoning Pro | Winner |
|---|---|---|---|
| Overall Score | 40 | 40 | -- |
| Rank | #341 | #343 | Reka Flash 3 |
| Quality Rank | #341 | #343 | Reka Flash 3 |
| Adoption Rank | #341 | #343 | Reka Flash 3 |
| Parameters | -- | -- | -- |
| Context Window | 66K | 128K | Sonar Reasoning Pro |
| Pricing | $0.10/$0.20/M | $2.00/$8.00/M | -- |
| Signal Scores | |||
| Capabilities | 50 | 67 | Sonar Reasoning Pro |
| Pricing | 100 | 92 | Reka Flash 3 |
| Context window size | 76 | 81 | Sonar Reasoning Pro |
| Recency | 39 | 38 | Reka Flash 3 |
| Output Capacity | 80 | 20 | Reka Flash 3 |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 40/100 (rank #341), placing it in the top -17% of all 290 models tracked.
Scores 40/100 (rank #343), placing it in the top -18% of all 290 models tracked.
With only a 0-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
Choose Reka Flash 3 when you need:
- High-volume production workloads where API costs must be minimized
- Step-by-step reasoning and chain-of-thought problem solving
- Self-hosted deployments where you need full control over the model
Choose Sonar Reasoning Pro when you need:
- Processing long documents or large codebases (128K token context)
- Multimodal workflows that require image understanding
- Step-by-step reasoning and chain-of-thought problem solving
Reka Flash 3 offers 97% better value per quality point. At 1M tokens/day, you'd spend $4.50/month with Reka Flash 3 vs $150.00/month with Sonar Reasoning Pro - a $145.50 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Reka Flash 3 also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (128K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.20/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (40/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Reka Flash 3 and Sonar Reasoning Pro are extremely close in overall performance (only 0 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
By Use Case
Best for Quality
Reka Flash 3
Marginally better benchmark scores; both are excellent
Best for Cost
Reka Flash 3
97% lower pricing; better value at scale
Best for Reliability
Reka Flash 3
Higher uptime and faster response speeds
Best for Prototyping
Reka Flash 3
Stronger community support and better developer experience
Best for Production
Reka Flash 3
Wider enterprise adoption and proven at scale
by rekaai
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Cost - 97% lower pricing; better value at scale
- Choose for Reliability - Higher uptime and faster response speeds
- Choose for Prototyping - Stronger community support and better developer experience
- Choose for Production - Wider enterprise adoption and proven at scale
| Capability | Reka Flash 3 | Sonar Reasoning Pro |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Modediffers | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
Reka Flash 3
rekaai
Sonar Reasoning Pro
Perplexity
Reka Flash 3 saves you $12.78/month
That's 97% cheaper than Sonar Reasoning Pro at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Reka Flash 3 | Sonar Reasoning Pro |
|---|---|---|
| Context Window | 66K | 128K |
| Max Output Tokens | 65,536 | -- |
| Open Source | Yes | No |
| Created | Mar 12, 2025 | Mar 7, 2025 |