GPT Image 2.5 SunburstvsRiverflow V2.5 Fast
Riverflow V2.5 Fast is cheaper than GPT Image 2.5 Sunburst at $0/M vs $5/M input tokens.
| Spec | GPT Image 2.5 Sunburst | Riverflow V2.5 Fast |
|---|---|---|
| Input price | $5/M tokens | Free |
| Output price | $30/M tokens | Free |
| Context window | — | 8K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Sep 2026 | Jun 2026 |
Our Verdict
GPT Image 2.5 Sunburst
Riverflow V2.5 FastRunner-up
Not enough votes to call it. On the specs, GPT Image 2.5 Sunburst has the edge: newer, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
GPT Image 2.5 Sunburst
Input
$5.00
Output
$30.00
Riverflow V2.5 Fast
Input
$0.000
Output
$0.000
Where to run it
2 hosts
GPT Image 2.5 Sunburst1 host
Riverflow V2.5 Fast1 host
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
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