GOOGLE MODEL GUIDE
Gemini 3 Pro Preview API
A historical Gemini 3 Pro preview route retained in Model Plaza; verify account availability because Google has ended the native preview.
Choosing and integrating
Gemini 3 Pro Preview API pricing breakdown
Gemini 3 Pro Preview (gemini-3-pro-preview) is billed by token usage. Prices below are USD per 1M tokens. LLMFly AI rates already include the 0.4x group multiplier; do not apply it again. Provider reference prices are separate. These rates come from the site's Model Plaza snapshot; confirm live catalog and account rates before calling.
Example: a request with 10,000 uncached input tokens and 1,000 output tokens costs approximately $0.0128 in LLMFly AI token charges. This excludes cache writes, tools, retries, and other additional fees.
- Platform and provider prices use their own input-token tiers. Do not apply provider long-context multipliers to platform prices.
- Not listed does not mean free. Account for cache reads, cache writes, and uncached input in their respective billing categories.
- Token cost = tokens in each billing category × its price per million ÷ 1,000,000. Add tools and other charges separately.
| Price source | Input tokens per request | Input | Output | Cache write | Cache read | 1h cache write |
|---|---|---|---|---|---|---|
| LLMFly AI | 0 < tokens ≤ 200,000 | $0.8 | $4.8 | $0.8 | $0.08 | $0.8 |
| LLMFly AI | 200,000 < tokens | $1.6 | $7.2 | $1.6 | $0.16 | $1.6 |
| Provider reference | 0 < tokens ≤ 200,000 | $2 | $12 | $2 | $0.2 | $2 |
| Provider reference | 200,000 < tokens | $4 | $18 | $4 | $0.4 | $4 |
Pricing tiers and additional charges
Gemini cache storage, grounding, and other tools can be billed separately, and Preview model pricing and lifecycle can change. Use the current Model Plaza and vendor rate card; never apply one Flash model's rate to a different model.
Gemini 3 Pro Preview capabilities and workloads
A historical Gemini 3 Pro preview route retained in Model Plaza; verify account availability because Google has ended the native preview.
Compatibility validation only; use a current stable model for new production work.
- Function calling and structured output for application workflows.
- Caching, code execution, file search, Search/Maps grounding and URL context in the native API.
Limits to check before migration
- No image or audio generation, and no Live API. Computer use is Preview.
- Native tools, Batch, Flex and Priority availability do not establish support on an LLMFly route.
Comparing Gemini 3 Pro Preview with sibling models
Compare the exact API ID, vendor lifecycle, context, maximum output, tools, and thinking controls first. Then measure pass rate, latency, tokens, and total cost on the same tasks. The Gemini 3 Pro Preview version or tier label alone does not prove better results.
Use the exact model ID when connecting
Set the model field to gemini-3-pro-preview; do not infer its spelling from the display name. Configure the API address and key using the access documentation; the snippet only shows the model field, not a complete request.
- Send a minimal text request and inspect the response and usage.
- Test streaming, tool calls, and structured output separately if your application needs them.
- Check retry behavior and spending limits before increasing traffic.
{
"model": "gemini-3-pro-preview"
}Vendor capability versus gateway access
Gemini 3 Pro Preview's specifications above were checked in vendor documentation. No paid inference requests or account-route modality, tool, or beta-parameter tests were run in this review. Validate your application before launch; documentation review is not end-to-end compatibility certification.
Frequently asked questions
What should I put in the model field?
Use the exact ID gemini-3-pro-preview, not the display name.
How is the discount calculated?
The current 0.4x multiplier is applied to the base rate, giving 60% off the catalog's official reference. Amounts are shown per million tokens.
Do these prices include every possible fee?
Not necessarily. Check cache-write duration, tools, and other route charges separately. Use the full pricing table and actual usage records to reconcile a bill.
What are the context and output limits?
Vendor documentation lists 1,048,576 context and 65,536 maximum output; confirm gateway route limits separately.
Use the Gemini 3 Pro Preview API
LLMFly AI provides this model. Use the exact ID gemini-3-pro-preview and confirm current account pricing in Model Plaza.