rekaai Reka Flash 3 vs Upstage Solar Mini 4
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Solar Mini 4 is 1.4× cheaper at a typical mix of 3 input tokens per output token.
- Solar Mini 4 accepts longer prompts: 524K vs 66K tokens.
- Solar Mini 4 is the newer model (released 2026-09-23).
| Reka Flash 3 | Solar Mini 4 | |
|---|---|---|
| Vendor | rekaai | Upstage |
| Released | 2025-03-12 | 2026-09-23 |
| Input / 1M | $0.10 | $0.05 |
| Output / 1M | $0.20 | $0.20 |
| Cached input / 1M | — | $0.0050 |
| Blended / 1M (3:1) | $0.125 | $0.088 |
| Context | 66K | 524K |
| Max output | 59K | 131K |
| Accepts | text | text |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 1 | 2 |
| Cheapest provider, output | $0.20 | $0.20 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | — | — |
Cost calculator
Reka Flash 3
$9.00 per month$0.30 per day
Solar Mini 4
$6.00 per month$0.20 per day
Solar Mini 4 saves $3.00 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
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