Model comparisons
Gemini 3 Flash Preview bills 20% less than Gemini 3.7 Flash per million output tokens. Tier prices, request fields and limits side by side.
Gemini 3.7 Flash is Google's high-speed chat model for everyday coding, agentic tool use and multi-step tasks, through an OpenAI-compatible API. It reads up to 1,048,576 tokens and replies up to 65,536, with three reasoning-effort levels.
View model details →View sample outputs →Gemini 3 Flash Preview is Google's lightweight chat model with an OpenAI-compatible API. It reads up to 256,000 tokens and replies up to 65,536, with three reasoning-effort levels, up to 128 tools, JSON output and streaming.
View model details →View sample outputs →Compare
Start with the input you have, the result you want and your budget. These are the differences that affect that choice.
Compare the published examples, then try the same input on both models with matching settings.
The Spicy Index and Freedom Score for both models, from the same daily calculation as the leaderboards.
| Measure | Gemini 3.7 Flash | Gemini 3 Flash Preview |
|---|---|---|
| Spicy Index | 77.8 | 77.0 |
| Freedom Score | 73.3 | 88.8 |
| Evidence | Tested 5 of 5 probe types · 24 runs | Tested 5 of 5 probe types · 23 runs |
| Range if the rest pass | 73.3–73.3 | 88.8–88.8 |
| Price | $1.35 per 1M mixed tokens (3 input : 1 output) | $1.01 per 1M mixed tokens (3 input : 1 output) |
| Reviews | Read the Gemini 3.7 Flash review | Read the Gemini 3 Flash Preview review |
Current price
A start price answers a different question than the one you have. These are the tiers both models publish, matched setting for setting, in US dollars per billed unit with no conversion step in between.
Swipe horizontally to compare all fields.
| Tier | Gemini 3.7 Flash | Gemini 3 Flash Preview | Difference |
|---|---|---|---|
| Input | $0.675 / 1 million tokens | $0.45 / 1 million tokens | Gemini 3 Flash Preview −33% |
| Cached input | $0.068 / 1 million tokens | $0.045 / 1 million tokens | Gemini 3 Flash Preview −33% |
| Output | $3.38 / 1 million tokens | $2.7 / 1 million tokens | Gemini 3 Flash Preview −20% |
Arithmetic on the published rates at each model's own default setting, not a quote. The console prices your actual settings before a request is accepted.
About this comparison
Every row here is read from the JSON Schema the endpoint validates against, so it matches what the API will really accept rather than a feature list written by hand.
Swipe horizontally to compare all fields.
| Controls and limits | Gemini 3.7 Flash | Gemini 3 Flash Preview |
|---|---|---|
| Supported tasks | chat | chat |
| Seed | Yes | Yes |
| Input context | 1,048,576 tokens | 256,000 tokens |
| Maximum output | 65,536 tokens | 65,536 tokens |
| Tool calling | Yes | Yes |
| Execution | Synchronous, with streaming | Synchronous, with streaming |
| Request timeout | 60 minutes | 60 minutes |
| Availability | Live | Live |
Do low-filter models allow every request?
Two separate facts sit behind these labels. The first is what we do, which is nothing: no platform content filter, and no maturity flag to set on a request. The second is what each model does on its own, and that is the only part that varies between these two.
Gemini 3.7 Flash
We add no content filter, but this model goes past its own limits only some of the time, even with a fiction-writing system prompt. Expect refusals and plan for retries. Legal and consent duties remain with the customer.
Usage note Use only authorized material. Do not invade privacy, impersonate a real person, or create sexual content involving minors.
Gemini 3 Flash Preview
We add no content filter, but this model goes past its own limits only some of the time, even with a fiction-writing system prompt. Expect refusals and plan for retries. Legal and consent duties remain with the customer.
Usage note Use only authorized material. Do not invade privacy, impersonate a real person, or create sexual content involving minors.
Use these content labels to shortlist models, then open each model page for available examples and content-test details.
The label never changes your obligations. Age, consent, real-person likeness and the law where you operate stay with you, and SpicyAPI does not inspect each request.
Can I swap the model ID without changing the request body?
The task lifecycle is shared; the body is not. Each endpoint publishes its own JSON Schema and the API validates against that, so this is the list to reconcile before a switch.
How to choose
Gemini 3.7 Flash takes the longer prompt: up to 1,048,576 input tokens in a single request.
Compare
The model identifiers are google/gemini-3.7-flash/chat and google/gemini-3-flash-preview/chat, and both go in the same field of the same request.
Both return the response on the chat request. With streaming enabled, read the stream until it finishes; there is no media task to poll.
Both use the same submit-and-track flow, but their required inputs may differ. Check each model page before switching.
One key, one balance, one set of spend caps. Both bill to the same account in US dollars, and the per-key daily, monthly and lifetime limits apply to whichever one you call.
Questions developers ask
Gemini 3 Flash Preview costs 20% less per million output tokens. Compare the input and cache rates below for longer conversations. Prices may change; check the estimate shown for your actual settings before submitting.
Gemini 3.7 Flash allows 60 minutes per task and Gemini 3 Flash Preview allows 60. Those are ceilings rather than typical times — most requests finish far sooner — but they are what your own client timeout has to survive.
Prices and capabilities shown here come from the current public model catalogue. Check each model page for its latest inputs and examples.
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