Gemini 1.5 Flash
Gemini 1.5 Flash is worth evaluating for rag, long context, and classification when its provider route and context window match the workload.
Use it for
- Teams evaluating rag, long context, and classification
- Workloads that can use a 1m context window
- Buyers comparing 2 tracked provider routes
Do not use it for
- Vision or document-understanding workloads
- Family
- Gemini 1.5
- Released
- 2024-05-14
- Context
- 1m
- Architecture
- Decoder Only
- Knowledge cutoff
- 2024-05
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Fine-tuned
Cheapest of 2 routes · GCP Vertex AI
About
Gemini 1.5 Flash is a large language AI model by Google, crafted for speed and efficiency in high-volume scenarios 145. As a lightweight model, it's optimized for fast processing and cost-effectiveness, making it ideal for real-time applications and high-frequency tasks 567. With its multimodal capabilities, Gemini 1.5 Flash effectively processes and reasons across multiple data types, including text, images, audio, video, and PDFs 145. Despite its smaller size compared to Gemini 1.5 Pro, it excels in tasks like summarization, chat applications, and data extraction from lengthy documents, employing "knowledge distillation" to transfer essential knowledge from larger models 5. Additionally, it features an extensive context window of up to 1 million tokens, allowing it to manage large information volumes effectively 456.
Gemini 1.5 Flash is a proprietary model in the Gemini 1.5 family. The structured metadata tracks a 1m-token context window and structured outputs. This page tracks provider routes through GCP Vertex AI and Google AI Studio, with the cheapest tracked route listed at $0.075 input and $0.3 output per 1M tokens. Headline tracked benchmarks include MMLU PRO 59.1.
Top use-case fit
RAG
Included by capability and metadata signals in the decision map.
Long context
Included by capability and metadata signals in the decision map.
Classification
Q/$ B1 relevant benchmark in the decision map.
Provider price ladder
Compare all 2Compare API pricing across 2 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Route |
|---|---|---|---|
| GCP Vertex AI | $0.075 | $0.300 | Serverless |
| Google AI Studio | - | - | ServerlessPartial |
Available via routers & gateways(13)
LiteLLM
GatewayOpen-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
OpenRouter
HybridUnified hybrid gateway to 400+ models from 60+ providers via a single OpenAI-compatible API, with optional auto-routing that selects the best model per prompt.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, semantic caching, and guardrails; Apache 2.0 core is fully self-hostable with the complete feature set.
AIRouter
RouterCommercial LLM router that analyzes incoming requests and routes to the optimal model for cost/quality/latency via a drop-in OpenAI-compatible API, with a privacy-preserving embedding mode that avoids sending prompt content.
Helicone
GatewayObservability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache 2.0 open-source core with a managed hosted tier for logging and analytics.
Kong AI Gateway
GatewayMulti-LLM AI gateway built on Kong Gateway 3.x, adding semantic routing, load balancing, guardrails, and MCP traffic analytics as plugins over Kong's existing API management platform.
Capabilities
Benchmark peer barsfor Classification
Benchmark scores(1)
Migration checks
No linked migration route is available for this model yet.
Frequently asked questions
What is the context window of Gemini 1.5 Flash?
Gemini 1.5 Flash has a context window of 1m tokens.
How much does Gemini 1.5 Flash cost?
Gemini 1.5 Flash is available at $0.075/1M input tokens through GCP Vertex AI.
When was Gemini 1.5 Flash released?
Gemini 1.5 Flash was released on 2024-05-14.
Which providers offer Gemini 1.5 Flash?
Gemini 1.5 Flash is available from 2 providers: GCP Vertex AI, Google AI Studio.
What benchmarks has Gemini 1.5 Flash been tested on?
Gemini 1.5 Flash has been evaluated on 1 benchmark, including MMLU PRO.
Cheapest of 2 routes · GCP Vertex AI