Google Gemini 3.1 Flash Lite preview
OpenRouter chatGoogle Gemini 3.1 Flash Lite preview is an OpenRouter chat model.It supports a 1,048,576-token context windowwith up to 65,536 output tokens.Input is priced at $0.250/M tokens and output at $1.50/M tokens. Capabilities include function calling, vision, reasoning, audio input. Route Google Gemini 3.1 Flash Lite preview via Future AGI's Agent Command Center for unified observability, caching, and 15 routing strategies including cost-optimized fallback.
Estimate Google Gemini 3.1 Flash Lite preview spend
Pick a workload, fine-tune the sliders, and see the monthly bill.
Estimate uses $0.2500/M input · $1.50/M output. Provider pricing changes. Production costs vary with retries, streaming overhead, and tool-call rounds.
Want this for free? Cache + route via Agent Command Center — first 100K requests and 100K cache hits free every month.
Pricing
Per-token rates, expressed in USD per 1M tokens. Verified May 12, 2026.
| Input | $0.250/M | |
| Output | $1.50/M | |
| Cached input | $0.0250/M |
Limits
- Context window
- 1,048,576 tokens
- Max input
- 1,048,576 tokens
- Max output
- 65,536 tokens
- Modalities
- vision, audio_in, pdf, video, text
Capabilities
- Function calling ✓ supported
- Parallel tool calls ✓ supported
- Vision input ✓ supported
- Audio input ✓ supported
- Audio output — not advertised
- PDF input ✓ supported
- Streaming ✓ supported
- Structured output ✓ supported
- Prompt caching ✓ supported
- Reasoning ✓ supported
Where it's strong
- +long-context tasks — context window in the top 2% of peers
- +audio input — only 4% of chat models on Future AGI advertise this
- +PDF input — only 16% of chat models on Future AGI advertise this
- +parallel tool calls — only 21% of chat models on Future AGI advertise this
Watch out for
- No major caveats flagged from public spec.
Benchmarks pending
We haven't logged public benchmark scores for Google Gemini 3.1 Flash Lite preview yet. Have one to contribute? Submit a source — citations help us prioritise.
Call Google Gemini 3.1 Flash Lite preview via Agent Command Center
One OpenAI-compatible endpoint. Routing, fallback, semantic caching, guardrails, and cost tracking come along for the ride. First 100K requests + 100K cache hits free every month.
agentcc / @agentcc/client). Per-call metadata — provider, cost, latency, cache hit, request id — is returned on x-agentcc-* response headers, so any HTTP client can read it.# Google Gemini 3.1 Flash Lite preview via the Agent Command Center Python SDK
# pip install agentcc
import os
from agentcc import AgentCC
client = AgentCC(
api_key=os.environ["AGENTCC_API_KEY"], # from app.futureagi.com → Settings → API Keys
base_url="https://gateway.futureagi.com/v1",
)
resp = client.chat.completions.create(
model="openrouter/google-gemini-3-1-flash-lite-preview",
messages=[{"role": "user", "content": "Hello, Google Gemini 3.1 Flash Lite preview!"}],
)
print(resp.choices[0].message.content)
print(f"Tokens: {resp.usage.total_tokens}")
# Per-call gateway metadata is returned on x-agentcc-* response headers.
# When you need it programmatically, use .with_raw_response to get them:
raw = client.chat.completions.with_raw_response.create(
model="openrouter/google-gemini-3-1-flash-lite-preview",
messages=[{"role": "user", "content": "Same call, but I want the headers."}],
)
print("Provider:", raw.headers.get("x-agentcc-provider"))
print("Latency:", raw.headers.get("x-agentcc-latency-ms"), "ms")
print("Cost: ", raw.headers.get("x-agentcc-cost"), "USD")
print("Cache: ", raw.headers.get("x-agentcc-cache"))AGENTCC_API_KEY with a key fromapp.futureagi.com.Gateway docs ↗Compare with similar models
Google Gemini 3.1 Flash Lite preview doesn't have a public Arena ELO score yet, so we group by provider only — quality-tier comparisons need a benchmark.
- OpenAI GPT 4o (2024-05-13)OpenRouter · $5.00/M in · $15.00/M out · 128,000 ctx
- Google Gemini 3.1 Pro previewOpenRouter · $2.00/M in · $12.00/M out · 1,048,576 ctx
- Google Gemini 3 Flash previewOpenRouter · $0.500/M in · $3.00/M out · 1,048,576 ctx
- Google Gemini 3 Pro previewOpenRouter · $2.00/M in · $12.00/M out · 1,048,576 ctx
FAQ
How much does Google Gemini 3.1 Flash Lite preview cost?
Input is priced at $0.250 per 1M tokens and output at $1.50 per 1M tokens (OpenRouter, last verified May 12, 2026).
What is the context window of Google Gemini 3.1 Flash Lite preview?
Google Gemini 3.1 Flash Lite preview supports a 1,048,576-token context window with up to 65,536 output tokens.
Does Google Gemini 3.1 Flash Lite preview support function calling?
Yes — Google Gemini 3.1 Flash Lite preview supports function (tool) calling, including parallel tool calls.
Is Google Gemini 3.1 Flash Lite preview good for production?
Google Gemini 3.1 Flash Lite preview is well-suited for long-context tasks — context window in the top 2% of peers and audio input — only 4% of chat models on Future AGI advertise this.
How can I route to Google Gemini 3.1 Flash Lite preview with fallback?
Use Agent Command Center: a single OpenAI-compatible endpoint that supports cost-optimized routing, latency-aware retries, model fallback, and shadow traffic. Configure once, swap models without app changes.
Useful links for Google Gemini 3.1 Flash Lite preview
Official sources, independent benchmarks, and pricing aggregators — no random search-engine guesses.
Third-party evals — verify the marketing.
Cross-check our number against the rest of the ecosystem.