Gemini 2.5 Pro Preview 06-05 vs 
Riverflow V2 Fast
Gemini 2.5 Pro Preview 06-05 has a larger context window than Riverflow V2 Fast (1.0M tokens vs 8K tokens).
Written rounds
2 promptsBuy-side IC memo on a fictional SaaS company. Valuation, then the diligence questions.
Five-year LBO on a fictional HVAC business. Returns first, then the sensitivities.
Price and specs
Not enough votes to call it. On the specs, Gemini 2.5 Pro Preview 06-05 has the edge: bigger model tier, bigger context window, major provider backing.
| Spec | Gemini 2.5 Pro Preview 06-05 | Riverflow V2 Fast |
|---|---|---|
| Input price | $1.25/M tokens | — |
| Output price | $10/M tokens | — |
| Context window | 1.0M tokens | 8K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Jun 2025 | Feb 2026 |
| At 10M a month | $12.50 | not listed |
Input tokens at list price. No caching, no batch discount.
Where to run it
Gemini 2.5 Pro Preview 06-052 hosts
Riverflow V2 Fast1 host
Per million tokens. Prices and uptime via OpenRouter, checked 13 Oct 2026.
Common questions
What is the difference between Gemini 2.5 Pro Preview 06-05 and Riverflow V2 Fast?
Gemini 2.5 Pro Preview 06-05 is developed by Google AI while Riverflow V2 Fast is developed by Sourceful. Gemini 2.5 Pro Preview 06-05 has a 1.0M token context window vs Riverflow V2 Fast's 8K. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.
Which is better, Gemini 2.5 Pro Preview 06-05 or Riverflow V2 Fast?
It depends on your use case. Gemini 2.5 Pro Preview 06-05 and Riverflow V2 Fast each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.
How can I compare Gemini 2.5 Pro Preview 06-05 and Riverflow V2 Fast on Rival?
This page shows a side-by-side comparison of Gemini 2.5 Pro Preview 06-05 and Riverflow V2 Fast across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.
More comparisons
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Same lab, same size, long tail
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