Gemini 3.1 Flash-Lite
Gemini 3.1 Flash-Lite is worth evaluating for coding, rag, and agents when its provider route and context window match the workload.
Use it for
- Teams evaluating coding, rag, and agents
- Workloads that can use a 1.05m context window
- Buyers comparing 3 tracked provider routes
Do not use it for
- Workloads where another current model has stronger sourced task evidence
- Family
- Gemini 3.1
- Released
- 2026-05-07
- Context
- 1.05m
- Max output
- 66,000
- Architecture
- Decoder Only
- Knowledge cutoff
- 2025-01
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Training
- Pretrained
Cheapest of 3 routes · Google AI Studio
About
Gemini 3.1 Flash-Lite is Google's generally available low-latency Gemini 3.1 model, launched May 7, 2026. It is optimized for high-volume, cost-sensitive workloads with text, image, and video inputs, a 1M token context window, and a 66K token maximum output. The GA model uses the stable API ID gemini-3.1-flash-lite and replaces gemini-3.1-flash-lite-preview, which is scheduled to shut down on May 25, 2026. Pricing is $0.25 per 1M input tokens and $1.50 per 1M output tokens.
Gemini 3.1 Flash-Lite is a proprietary model in the Gemini 3.1 family. The structured metadata tracks a 1.05m-token context window, multimodal input, function calling, tool use, structured outputs, and code execution. This page tracks provider routes through Google AI Studio, OpenRouter, and Vercel AI Gateway, with the cheapest tracked route listed at $0.25 input and $1.5 output per 1M tokens. Headline tracked benchmarks include MMMU Pro 76.8, Google-Proof Q&A 86.9, and Chatbot Arena 1432.0.
Top use-case fit: coding, agents, and build tasks
Coding
Included by capability and metadata signals in the decision map.
RAG
Included by capability and metadata signals in the decision map.
Agents
Included by capability and metadata signals in the decision map.
Provider price ladder
Compare all 3Compare API pricing across 3 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Cache | Route |
|---|---|---|---|---|
| Google AI Studio | $0.250 | $1.50 | - | Serverless |
| OpenRouter | $0.250 | $1.50 | - | Serverless |
| Vercel AI Gateway | $0.250 | $1.50 | read $0.030 | Serverless |
Available via routers & gateways(13)
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.
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.
Martian
RouterAI-powered LLM router that analyzes each prompt in real-time to select the optimal model, targeting 20–97% cost reduction while maintaining quality; San Francisco startup reportedly nearing $1.3B valuation.
Neutrino AI
RouterCommercial LLM router that dynamically routes each query to the best-suited model with load balancing and fallback handling, charging 3% of underlying AI spend.
Capabilities
Benchmark peer barsfor Coding
No task-mapped benchmark peers are available for this model yet.
Benchmark scores(3)
| Benchmark | Score | Version | Source |
|---|---|---|---|
| MMMU Pro | 76.8 | LLM-Stats aggregator | https://llm-stats.com/benchmarks/mmmu-pro |
| Google-Proof Q&A | 86.9 | diamond | https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-1-flash-lite/ |
| Chatbot Arena | 1432.0 | Arena Elo | https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-1-flash-lite/ |
Migration checks
No linked migration route is available for this model yet.
API versions
gemini-3.1-flash-liteRankings & picks(5)
Comparison and alternatives
Browse all comparisons →Show all 10 popular comparisonssorted by 7-day search impressions
Cheapest of 3 routes · Google AI Studio