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Gemini 3.7 Flash API

Access Google Gemini 3.7 Flash—also searched as Gemini 3.7— through EvoLink's unified chat API. Test coding, multi-step agents, tool use before integrating.

GoogleText GenerationAvailable
from $0.675 / 1M input tokens$0.750 official price-10%
API docs
Long-context codingConfigurable thinkingPrompt cachingChat + Gemini API
Production routeLive
Context
1.05M context · 65.5K max output
Best For
Coding, agent orchestration, document analysis
Input
Text + images
Output
Text · JSON (structured output) · tool calls

Choose Gemini 3.7 Flash

Google’s newest Flash-tier workhorse for cost-efficient coding, agentic workflows, knowledge work, and multimodal reasoning, with improved token efficiency over Gemini 3.6 Flash and a 1M-token context window.

Gemini 3.7 Flash

Google Flash-tier workhorse model

Selected
Model ID
gemini-3.7-flash
Best for

Production coding and full-stack refactoring, multi-step agents and orchestration, document and chart analysis, and high-volume workloads where better token efficiency lowers cost per completed task.

Input
$0.675 / 1M-10%
45.9 cr / 1M$0.750official price
Cache read
$0.068 / 1M-55%
4.6 cr / 1M$0.150official price
Output
$3.375 / 1M-10%
229.5 cr / 1M$3.750official price

All rates are per 1M tokens, shown in USD and credits, and reflect your account's current pricing.

Gemini 3.7 Flash pricing

Estimate what one Gemini 3.7 Flash request costs before you integrate. The calculator uses your account's current rates, with official pricing as a reference.

Request calculator

Enter the token mix for one request and the number of Google Search queries.

Estimated request cost

Gemini 3.7 Flash
USD$0.0018
Credits0.1158

Official estimate $0.0020 · save $0.0003 (11%)

Input tokens0.0459 cr
Cache read tokens0.001 cr
Output tokens0.0689 cr
Google Search0 cr

Minimum charge: 0.01 credits per request.

Budget guide

Approximate requests using the current token mix and search queries.
Add credits
$10
About 5872 requests

For quick testing

$50
About 29360 requests

For regular development

$100
About 58721 requests

For production evaluation

Server-side tool rates

Gemini 3.x bills each nonempty search query, even if no sources are returned. One request may run multiple queries. Search fees are added separately after the token minimum charge.
  • Google Search$0.014/ query0.952 cr / query

Gemini 3.7 Flash API for cost-efficient coding and agent workflows

Call Google’s newest Flash-tier workhorse through EvoLink’s unified API. Gemini 3.7 Flash improves coding, knowledge work, and multimodal reasoning over Gemini 3.6 Flash, plus a 1,048,576-token context window, prompt caching, structured output, and tool use — at Google’s introductory $0.750 / $3.750 per million input / output tokens (through December 31, 2026).

Gemini 3.7 Flash is served on EvoLink under the model ID gemini-3.7-flash through Chat Completions · Gemini native API, with the same API key and balance you use for every other model. It offers a 1.05M context window and up to 65.5K output tokens, plus coding, multi-step agents, tool use.

Gemini 3.7 Flash

Gemini 3.7 Flash specs and capabilities

Numbers come from the EvoLink route configuration; capabilities are what the API exposes today.

Context window
1.05M tokens
Max output
65.5K tokens
Input
Text + images
Output
Text · JSON (structured output) · tool calls
Reasoning
Configurable reasoning effort
Tool use
Function calling with multi-step tool sequences
Prompt caching
Automatic cache reads at a lower rate
Server-side tools
Google Search, billed per search query
Protocols
Chat Completions · Gemini native API
Model ID
gemini-3.7-flash

Why Gemini 3.7 Flash can handle these workloads

Gemini 3.7 Flash is most useful when a large context window, improved token efficiency, and reusable prompt prefixes work together. Context capacity alone does not improve an answer; the workload still needs relevant evidence, clear structure, and an output budget.

A 1M-token workspace, not a target to fill

The 1,048,576-token window can keep related code, specifications, and prior tool results available without excessive chunking. Retrieval and context compaction still matter because irrelevant input competes for attention and increases processing cost.

Improved token efficiency over 3.6 Flash

Gemini 3.7 Flash aims to complete multi-step workflows in fewer turns and fewer tokens. Fewer model calls and fewer total tokens are where the cost advantage comes from, so track total tokens per accepted task rather than a single request price.

Prompt caching pays off when prefixes stay stable

Repository instructions, system prompts, reference material, and tool schemas create the strongest cache opportunity when their ordering stays consistent. Frequent model or prompt-structure changes can force the long prefix to be processed again.

Where Gemini 3.7 Flash earns a place in a production model stack

Google positions Gemini 3.7 Flash as a workhorse: better coding, knowledge work, and multimodal performance with meaningfully improved token efficiency over Gemini 3.6 Flash. Its strongest fit is production work where good-enough reasoning at a lower token cost beats paying for a premium tier.

Cost-efficient coding and refactoring

Gemini 3.7 Flash targets everyday coding, prototyping, and full-stack refactoring with fewer tokens and fewer model calls than Gemini 3.6 Flash. It is available in Google’s Antigravity agent environment. Measure accepted patches and review time, not isolated snippet quality.

Agentic workflows and orchestration

It fits multi-step orchestration, tool selection, structured output, and code execution where lower per-call cost compounds across long agent runs. Preserve complete assistant messages, tool-call IDs, arguments, and tool results across turns.

Knowledge work and multimodal reasoning

Use it for document analysis, chart interpretation, and multi-element web layout generation across a 1M-token context. Retrieval and document structure still matter: a 1M window does not make irrelevant context useful.

When another route is the better choice

Trivial, latency-critical, or very high-volume classification and extraction usually belong on the cheaper Gemini 3.5 Flash-Lite. Route the hardest reasoning to a Pro-tier model. Escalate to 3.7 Flash only when its efficiency actually lowers cost per accepted task.

What early Gemini 3.7 Flash reactions suggest—and what still needs proof

Gemini 3.7 Flash launched on 2026-08-13. Treat launch-day community reactions as hypotheses to verify on your own tasks, tools, budgets, and acceptance criteria—not as settled benchmarks.

Same price as 3.6 Flash, stronger agentic execution

Google positions 3.7 Flash as its most capable workhorse model yet for coding and agents, with major gains in code generation and terminal execution, at exactly the same price as Gemini 3.6 Flash. On the same workload the win comes from fewer retries and shorter agent loops, not from a lower per-token rate.

It is a Flash-tier workhorse, not a top-end engineering model

Some launch-day discussion places it behind larger frontier models on hard software-engineering benchmarks. If your work is deep repository refactoring or long autonomous coding, benchmark it against a Pro-tier or premium model before making it the default.

Verify token usage per task on your prompts

Some launch-day reports observed higher token usage per task than Gemini 3.6 Flash. Check completion length, instruction-following, and tool-call discipline on representative prompts so extra reasoning does not quietly raise output cost.

It is a closed, API-only Google model

Gemini 3.7 Flash has no open weights and cannot be self-hosted. Access is through the Gemini API and platforms such as Google AI Studio, Antigravity, and unified gateways like EvoLink—so route by cost and reliability, not by local deployment.

Two ways to use Gemini 3.7 Flash: EvoLink API or Agent

Use the EvoLink API for product backends and batch jobs, or call Gemini 3.7 Flash from Codex, Claude, or Gemini for coding and analysis workflows. Both paths share the same EvoLink API key, balance, model ID, and request history.

Option 1

Integrate with the EvoLink API

Best for: product backends, batch jobs, automated pipelines

Send OpenAI-compatible Chat Completions (or Anthropic Messages) requests to EvoLink and control the model ID, system prompt, output budget, tools, and structured output.

  1. 1Create an EvoLink API key in the console
  2. 2Point your OpenAI or Anthropic SDK at the EvoLink base URL and select the model ID shown above
  3. 3Send one representative request and read the usage field for input, cached, and output tokens
  4. 4Set max_tokens and retries per task; keep tool-call IDs and results across turns
Option 2

Call it with an Agent

Best for: coding, review, and analysis tasks in Codex, Claude, and Gemini

Give the Agent the task, the inputs to include, and the acceptance criteria. It assembles the request, calls Gemini 3.7 Flash through EvoLink, and returns the answer with token usage.

  1. 1Set EVOLINK_API_KEY in your local environment; never put it in code or a prompt
  2. 2Describe the task, the inputs to include, and the expected output format
  3. 3Ask the Agent to call Gemini 3.7 Flash through EvoLink and show the request before sending
  4. 4Let the Agent report the answer, token usage, and any error body

Gemini 3.7 Flash API code example and error handling

This example shows the shortest runnable request: an OpenAI-compatible Chat Completions call with a system prompt, a user message, and an output budget. Open the API tab for the complete parameter and response reference.

View complete API docs
cURL
curl -X POST https://api.evolink.ai/v1/chat/completions \
  -H "Authorization: Bearer $EVOLINK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3.7-flash",
    "messages": [
      { "role": "system", "content": "You are a precise assistant. Answer in JSON when asked." },
      { "role": "user", "content": "Classify the sentiment of each review below and return a JSON array:\n<reviews>" }
    ],
    "max_tokens": 1024,
    "temperature": 0.1
  }'

# The Gemini native API is available with the same model ID; see the docs
# for the request shape.
# The response includes choices[0].message and a usage object (prompt,
# cached, and completion tokens).

Invalid request or unsupported parameter

Check the model ID, the messages array, and parameter ranges against the API reference; remove fields this route does not support.

Authentication or balance issue

Check the Authorization bearer token and confirm the available balance in the console.

Context length exceeded

Prompt tokens exceed the Gemini 3.7 Flash context window. Trim or retrieve only the relevant evidence and reuse cached prefixes.

Rate limited (429)

Back off and retry with jitter; batch or queue requests instead of sending parallel bursts.

Content or tool call rejected

Review sensitive content, malformed tool-call arguments, and JSON schema mismatches before retrying.

What to verify before routing production traffic to Gemini 3.7 Flash

A suitable workload can still fail because the integration uses the wrong identifier, sends unsupported parameters, or drops agent state between turns. Verify the request surface and conversation contract before evaluating model quality.

01

Use the exact model ID gemini-3.7-flash

Send model "gemini-3.7-flash" (with dots) on the EvoLink API route. The dashed form gemini-3-7-flash is only the page URL, not the API model parameter.

Model ID
02

Use OpenAI Chat Completions or the Gemini native API

EvoLink exposes Gemini 3.7 Flash through OpenAI-compatible /v1/chat/completions and the Gemini native generateContent endpoint. Keep the same EvoLink API key for either protocol.

Protocols
03

Mind the breaking parameter changes

Per Google’s migration checklist, remove custom temperature, top-P, top-K, and candidate_count, replace numeric thinking_budget with the thinking_level string, and remove prefilled model turns. Update older Gemini request builders accordingly.

Migration
04

Replay complete assistant and tool state

Multi-turn agents should retain complete assistant messages, tool-call IDs, arguments, and tool results. Keeping only the final text breaks state continuity and can make later steps fail even when the context window is large enough.

Tool state

Prompt caching for repeated long context

Automatic cache reads use a dedicated lower rate when stable repository instructions, reference documents, and tool schemas can be reused.

1M-token context with a 65K max output limit

Keep connected code, specifications, documents, and agent state in one working context. Treat the limit as capacity rather than a target: retrieve relevant evidence and set task-appropriate output budgets.

Compare Gemini 3.7 Flash cost per accepted task, not token price alone

Gemini 3.7 Flash wins on economics when its efficiency reduces tokens, model calls, retries, or human rework on the same workload. Evaluate identical task sets instead of comparing isolated prompt prices.

First-pass successAccepted deliverable rateRetry countOutput tokensCache-hit rateValid tool callsTime to accepted resultHuman correction and fallback rate

If Gemini 3.7 Flash produces usable results with fewer tokens and less review effort, its token efficiency compounds into a real cost advantage. If quality slips on your hardest tasks, escalate those to a Pro-tier model and keep 3.7 Flash for the efficient majority.

Compare Gemini 3.7 Flash with leading long-context models after workload testing

EvoLink

First verify whether Gemini 3.7 Flash reduces retries and review effort on your tasks. Then compare price, context, caching, and workload fit to choose the production route.

Gemini 3.7 Flash
Input / output$0.675 / $3.375
Context1.05M
CachingAutomatic cache reads
Best forProduction coding and full-stack refactoring, multi-step agents and orchestration, document and chart analysis, and high-volume workloads where better token efficiency lowers cost per completed task.
Gemini 3.5 Flash Lite
Input / output$0.271 / $2.25
Context1.05M
CachingContext cache
Best forThe cheapest, fastest 3.5-class route for classification, extraction, and high-throughput subagents — escalate hard work to 3.7 Flash.
Gemini 3.1 Pro
Input / output$1.865 / $11.183
Context1.05M
CachingContext cache
Best forStep up to the Pro tier when a task needs deeper reasoning than the Flash line can deliver.

Gemini Model Family

Same API key and balance — switch tiers without changing your integration.

Compare all Gemini models
Gemini 3.8 Flash

Gemini 3.8 Flash

The newest Flash generation for stronger coding, reasoning, and agent workloads.

View model
Gemini 3.6 Flash

Gemini 3.6 Flash

The previous-generation Flash model at the same price — compare it before moving production traffic to 3.7 Flash.

View model
Gemini 3.5 Flash Lite

Gemini 3.5 Flash Lite

The cheapest, fastest 3.5-class route for classification, extraction, and high-throughput subagents — escalate hard work to 3.7 Flash.

View model

Other text models on EvoLink besides Gemini 3.7 Flash

GPT-5.6

GPT-5.6

OpenAI’s tiered frontier family (Sol/Terra/Luna) for capability, latency, and cost-routing flexibility.

View model
Claude Opus 4.8

Claude Opus 4.8

Anthropic’s premium route for long-running agents, complex reviews, and judgment-heavy work.

View model
DeepSeek V4

DeepSeek V4

DeepSeek’s cost-efficient 1M-context route for high-volume coding, reasoning, and agent workloads.

View model
Kimi K3

Kimi K3

Moonshot’s long-context reasoning route for repository-scale coding and multi-document work.

View model

Gemini 3.7 Flash guides and related reading

Gemini 3.7 Flash release date & rollout

Gemini 3.7 Flash release date & rollout

What launched on August 13, 2026, the gemini-3.7-flash model ID, official pricing, and where the model is available.

Read guide
Gemini 3.7 Flash vs Gemini 3.6 Flash

Gemini 3.7 Flash vs Gemini 3.6 Flash

Same price, three weeks apart — the migration checklist, the behaviour changes to test, and when staying on 3.6 is the right call.

Read guide
Compare the Gemini API family

Compare the Gemini API family

See how 3.7 Flash, 3.5 Flash-Lite, 3.6 Flash and 3.1 Pro differ on price, context, and workload fit before you route.

Read guide
Gemini 3.5 Flash-Lite API

Gemini 3.5 Flash-Lite API

The cheapest, fastest 3.5-class route for classification, extraction, and high-throughput subagents — escalate hard work to 3.7 Flash.

Read guide
Gemini 3.6 Flash API

Gemini 3.6 Flash API

The previous-generation Flash model at the same price — compare it before moving production traffic to 3.7 Flash.

Read guide
Gemini 3.1 Pro API

Gemini 3.1 Pro API

Step up to the Pro tier when a task needs deeper reasoning than the Flash line can deliver.

Read guide

Gemini 3.7 Flash API FAQ

Is the Gemini 3.7 Flash API available through EvoLink?

Yes. Gemini 3.7 Flash is available as a production model with live backend pricing and official fallback rates.

What model ID should I use for the Gemini 3.7 Flash API?

Send model "gemini-3.7-flash" (with dots). The dashed gemini-3-7-flash is only the page URL, not the API model parameter.

Which protocols and SDKs work with Gemini 3.7 Flash?

Use the OpenAI-compatible Chat Completions endpoint or the Gemini native generateContent endpoint with the same EvoLink API key. There is no Anthropic Messages route for this model.

Does the Gemini 3.7 Flash API really support the full 1M context?

Yes — the route records 1,048,576 input tokens per Google’s documentation. Smaller limits you may see usually come from a particular Gemini product surface or client configuration, not the API model itself.

How should I use the Gemini 3.7 Flash 1M-token context window?

Keep related code, documents, and tool results together, but use retrieval, stable cached prefixes, and context compaction instead of filling the window by default.

How is Gemini 3.7 Flash different from Gemini 3.6 Flash and 3.5 Flash-Lite?

3.7 Flash is priced the same as 3.6 Flash but posts higher official scores on coding and agentic benchmarks such as FrontierCode and Terminal-bench, per Google. 3.5 Flash-Lite remains the cheaper, faster route for classification and high-throughput tasks.

Is Gemini 3.7 Flash actually cheaper to run if it uses more tokens?

Per-token rates match Gemini 3.6 Flash. Google positions 3.7 Flash to finish tasks in fewer turns, while some launch-day reports observed higher token usage per task. Compare total tokens per accepted task on your own workload rather than the per-request rate.

What breaking changes should I handle when migrating to Gemini 3.7 Flash?

Remove custom temperature, top-P, top-K, and candidate_count from generation configs, replace numeric thinking_budget with the thinking_level string, and remove prefilled model turns — all per Google’s official migration checklist.

What happened to the minimal thinking level in Gemini 3.7 Flash?

Google removed it: available levels are low, medium (default), and high, and sending minimal to the Gemini API returns an error. EvoLink is set to downgrade reasoning_effort none or minimal to low so migrated requests do not fail. For high-volume classification pipelines, Gemini 3.5 Flash-Lite is the lower-cost floor.

How are Gemini 3.7 Flash thinking tokens billed?

Thinking tokens are billed at the output rate under Google’s pricing, so verbose reasoning can make bills noticeably larger than the visible answer. Set task-appropriate thinking levels and monitor reasoning plus final-answer tokens.

Can Gemini 3.7 Flash analyze video and audio?

Yes. The model accepts text, image, video, audio, and PDF input and outputs text, which makes it a common choice for video and audio understanding workloads. Image, audio, and live-stream generation are not supported.

Is there a Gemini 3.7 Pro?

No. As of the 3.7 Flash release, Google’s newest Pro-line model remains gemini-3.1-pro-preview, and no 3.5 or 3.7 Pro has been announced on official channels.

How long does the Gemini 3.7 Flash introductory price last?

Google lists $0.750 input and $3.750 output per million tokens as an introductory price through December 31, 2026, with standard rates of $1.500 and $7.500 from January 1, 2027. See the pricing section on this page for the current EvoLink rate.

Is Gemini 3.7 Flash more reliable than 3.6 Flash at following instructions?

Google reports similar safety and tone to 3.6 Flash, while one independent tracker measured a higher hallucination rate at launch. Verify instruction-following and factual discipline on your own representative tasks before promoting it to production.

What should a production Gemini 3.7 Flash evaluation measure?

Track first-pass success, accepted deliverables, retries, output tokens, cache hits, valid tool calls, time to accepted result, human correction, and fallback rate.