Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview is a legacy integration reference; evaluate Gemini 3.5 Flash-Lite before starting new work.
- Family
- Gemini 3.1
- Released
- 2026-03-03
- Lifecycle
- Retired May 25, 2026
- Context
- 1M
- Architecture
- Decoder Only
- Knowledge cutoff
- 2025-01
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryRestricted
- Weights
- Not released
- Code
- Unknown
- Training
- Pretrained
No tracked provider pricing is available yet.
No tracked provider pricing is available yet.
This model is deprecated. Google DeepMind recommends switching to Gemini 3.5 Flash-Lite.
About
Preview-stage Gemini 3.1 Flash-Lite model shut down on 2026-05-25; use gemini-3.1-flash-lite GA instead.
Providers
No active provider routes are tracked for this model.
Deprecated provider routes(4)
| Provider | Status | Catalog ID |
|---|---|---|
| Google AI Studio | DeprecatedRetired May 25, 2026 | — |
| GCP Vertex AI | DeprecatedRetired May 25, 2026 | — |
| OpenRouter | DeprecatedRetired May 25, 2026 | google/gemini-3.1-flash-lite-preview |
| Vercel AI Gateway | DeprecatedRetired May 25, 2026 | google/gemini-3.1-flash-lite-preview |
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 500+ models from 80+ providers via a single OpenAI-compatible API, with an optional Auto Router that selects a model per prompt from market spend data.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, caching, and guardrails; MIT-licensed open-source core is self-hostable. Now part of Palo Alto Networks as Prisma AIRS AI Gateway.
AIRouter
RouterCommercial LLM router (branded "AI Router" on its site) that picks the best model per request via a Decision API or an OpenAI-compatible Chat Completions endpoint, with a private selection mode that routes on anonymized patterns; sold as BYOK subscription plans priced by routed tokens.
Helicone
GatewayObservability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache-2.0 open-source platform 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 Coding
Benchmark scores(6)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| 60.6 | MultiChallengeObserved 2026-04-26 | — | ||
| 86.9 | GPQA Diamond (accuracy)Observed 2026-06-07 | — | ||
| 16.2 | HLE (accuracy)Observed 2026-06-07 | — | ||
| 72.0 | LiveCodeBench accuracy (accuracy)Observed 2026-06-07 | — | ||
| 83.0 | MMLU-Pro (accuracy)Observed 2026-06-07 | — | ||
| 1401.0 | text creative_writing 2026-10-22Observed 2026-10-22 | Configuration: Gemini 3.1 Flash-Lite Preview Harness: LMArena blind pairwise human votes, Bradley-Terry Evaluator: LMArena Confidence: confirmed Notes: LMArena Text arena, Creative Writing category (no style control), board published 2026-10-22 (HF lmarena-ai/leaderboard-dataset @a467e6b9, text config, latest split). Board entry 'Gemini 3.1 Flash-Lite Preview' (category creative_writing in text/latest-00000-of-00001.parquet): rank 99 of 416, rating 1401.0 (95% CI 1394.2-1407.8), 10590 votes. The board entry or catalog model carries a Preview/Beta/Experimental label. LLM Reference model is lifecycle-deprecated; score kept as historical. Source: LMArena (CC BY 4.0). Retrieved 2026-10-27. | Source Source: LMArena (lmarena.ai), CC BY 4.0 |
Migration checks
No linked migration route is available for this model yet.