Sonar vs Reka Flash
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
| Specification |
by Perplexity
|
by Reka
|
|---|---|---|
| Overview | ||
| Status | Current mid tier | Current mid tier |
| Released | Feb 1, 2025 | Jun 1, 2025 |
| Pricing per million tokens | ||
| Input | $1.00/Mtok | $0.800/Mtok |
| Output | $1.00/Mtok | $2.00/Mtok |
| Blended avg | $1.00/Mtok | $1.10/Mtok |
| Specifications | ||
| Context window | 200K tokens | 128K tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
text
|
textimagevideoaudio
|
| Benchmarks sources: n/a / LMSYS Chatbot Arena (2025-07-15 archive), Reka tech report | ||
| HumanEval | — | 72 vendor |
| Independent composite scores each on its own scale — not part of the average above | ||
| LMSYS Chatbot Arena | — | 1220.6 ELO |
| Providers | ||
| Available from |
Perplexity — $1.00/$1.00/Mtok
|
Reka — $0.800/$2.00/Mtok
|
Cost at scale
1M tokens · 50/50 input/output| Volume | Sonar | Reka Flash | Savings |
|---|---|---|---|
| 1M tokens | $1 | $1.1 | $0.1 (9.1%) |
| 10M tokens | $10 | $11 | $1 (9.1%) |
| 100M tokens | $100 | $110 | $10 (9.1%) |
| 1000M tokens | $1000 | $1100 | $100 (9.1%) |
When to pick which
distilled from the pricing and spec data above- cost dominates: $1.00/Mtok blended vs $1.10 — 9.1% less on the same 50/50 token mix
- you need the longer context: 200K tokens vs 128K (1.6×)
- this pairing gives Reka Flash no edge on price, context, cache discount, or measured performance — pick it only for qualitative fit (ecosystem, compliance, model behavior on your prompts)
The cheaper option here — Sonar costs $1.00/Mtok blended on Perplexity.
Summary
Sonar by Perplexity costs $1.00/Mtok input and $1.00/Mtok output, with a 200K-token context window. It supports text input.
Reka Flash by Reka costs $0.800/Mtok input and $2.00/Mtok output, with a 128K-token context window. It supports text, image, video, audio input.
On a blended cost basis, Sonar is 9.1% cheaper than Reka Flash.It also has a larger context window.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.