Google · Model identity
Gemini 3.8 Flash
Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.
2pricing routes
What published route metadata supports
Audio inputCachingFile inputReasoningStructured outputTool useVideo inputVisionWeb search
Input modalities
AudioFilesImageTextVideo
Supported API parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p
Only source-backed fields are filled
Release dateNot independently verified
Knowledge cutoffNot independently verified
Open weightsNot independently verified
OpenRouter catalog date2026-09-02
LLMPrice does not infer a release date, knowledge cutoff, or open-weight status from a model name, Hugging Face link, or pricing route.
Could this workload cost less?Compare Gemini 3.8 Flash with cheaper models using the same workload.
Find cheaper alternatives →| Endpoint / route | Model ID | Input | Cached | Output | Context | Source |
|---|---|---|---|---|---|---|
| OpenRouterBatch | google/gemini-3.8-flash:batch | $0.375 | $0.0375 | $1.88 | 1.05M | OpenRouter API ↗ |
| OpenRouterStandard | google/gemini-3.8-flash | $0.825 | $0.0825 | $4.12 | 1.05M | OpenRouter API ↗ |
1 verified price change since Aug 26, 2026
2 route availability changes recorded. No earlier prices are inferred.
Input / 1M$0.825Sep 3, 2026 → Oct 16, 2026
Output / 1M$4.12Sep 3, 2026 → Oct 16, 2026
- Oct 16, 2026OpenRouter · Standard
Input $0.75 → $0.825 · Cached input $0.075 → $0.0825 · Output $3.75 → $4.12
- Sep 3, 2026OpenRouter · Standard
New pricing route added
- Sep 3, 2026OpenRouter · Batch
New pricing route added