Gemini 3.7 Flash
gemini-3.7-flashGemini 3.7 Flash by Google: 1M context, 64K max output, with Vision, Function Calling, Reasoning, Prompt Caching, Response Schema, Audio, Video, Streaming. Via KumoAPI, Input (prompt) costs 0.75 Credits / M tokens. Compatible with Gemini generateContent: swap the base URL and you are connected.
Capabilities
Listed exactly as the catalog flags them, including what this model does not support.
VisionVision
Natively multimodal: captioning, classification, visual Q&A, chart and screenshot understanding. Images are converted to tokens at the input rate.
Function CallingFunction Calling
Connect the model to external tools and APIs: it decides when to call which function and with what arguments, your code runs it. Force or forbid calls with tool_choice.
ReasoningReasoning
The model thinks before answering, which markedly improves multi-step planning and reasoning for coding, math and data analysis. Thinking tokens bill at the output rate.
Prompt CachingPrompt Caching
Repeated prefixes (system prompts, long documents) hit the cache: reads cost far less than input, writes are priced by retention time.
Response SchemaResponse Schema
Constrain output to a JSON Schema you provide for predictable, type-safe results without parsing free text.
AudioAudio
Audio input or speech output.
VideoVideo
Video input understanding or video generation.
StreamingStreaming
Tokens arrive over SSE as they are generated; the first frame is forwarded immediately with no buffering. Claude Code, Codex and similar tools depend on this.
File InputFile InputNot supported
Upload PDFs and other documents directly; the model reads the whole document with native vision.
Web SearchWeb SearchNot supported
Vendor-hosted live web retrieval; the model decides when to search and cites sources.
RealtimeRealtimeNot supported
Bidirectional low-latency voice / text sessions over WebSocket.
SessionSessionNot supported
Server-side multi-turn context (e.g. previous_response_id in Responses) so you need not resend history.
MediaMediaNot supported
Image / video / music generation endpoints.
Multipart FormMultipart FormNot supported
multipart/form-data file-upload requests.
Binary ResponseBinary ResponseNot supported
Endpoints that return raw audio / image bytes.
Protocols & code samples
Change the base URL to KumoAPI, keep everything else. Native protocols pass straight through; “adapted” ones are translated by the gateway.
Google GenAI SDK or any generateContent client: point the base URL at https://api.kumoapi.com.
curl "https://api.kumoapi.com/v1beta/models/gemini-3.7-flash:generateContent" \
-H "x-goog-api-key: $SOLEAPI_KEY" \
-H "content-type: application/json" \
-d '{
"contents": [{"parts": [{"text": "Explain prompt caching in one sentence"}]}]
}'Full price list
List price → KumoAPI price per channel, every pricing dimension, nothing hidden.
| Item | Unit | Google list price | KumoAPI ×1 |
|---|---|---|---|
| Input (prompt) | per 1M tokens | 0.75 Credits | |
| Output (completion) | per 1M tokens | 3.75 Credits | |
| Cache read | per 1M tokens | 0.075 Credits | |
| Cache storage (duration) | per M·hr | 0.5 Credits | |
| Google Search grounding | per 1K calls | 14 Credits |
“Off” is computed at 1 Credit = ¥1 and today’s rate: 1 − channel multiplier × (1 Credit in the list currency).
FAQ
How much does the Gemini 3.7 Flash API cost?
Via KumoAPI, Input (prompt) costs 0.75 Credits / M tokens, with 1 Credit = ¥1.
What are the context window and output limit of Gemini 3.7 Flash?
Context window 1M tokens, up to 64K tokens per response.
Does Gemini 3.7 Flash support function calling and structured outputs?
Function calling with tool_choice control is supported; structured outputs (JSON Schema) are supported.
One API key for Gemini 3.7 Flash and 30+ models
Free credits on sign-up, pay as you go, no monthly fee.