Updated Jun 4, 2026

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Updated Jun 4, 2026

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Riverflow V2.5 Fast

The speed-optimized variant of Sourceful's Riverflow 2.5, for production deployments with a latency budget. Like the rest of the series it plans multi-step edits with a reasoning model and judges candidates before accepting one, with reasoning effort set on the request.

Provider: Sourceful
Released: 2026-06-04
Size: LARGE
Free API (OpenRouter): No
Per 1M tokens: $0.00 in · $0.00 out
Rival’s tab: $0.00; 19/19 receipts survived

Free API availability

No free endpoint for Riverflow V2.5 Fast was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 8 Sep 2026OpenRouter usage limits

View API options

Get API accessProvider and language code samples

Provider

fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"sourceful/riverflow-v2.5-fast"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Model Responses

19 outputs · $0.00 tracked across 19 receipts

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