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Gemini 2.5 Flash

gemini-2.5-flash
Context window
1,048,576 tokens
Maximum output
65,536 tokens
Input price
$0.3 per 1M tokens
Output price
$2.5 per 1M tokens
Modalities
text, image, audio, video, audio-in

Last verified · Source ↗

Official description

Stable version of Gemini 2.5 Flash, our mid-size multimodal model that supports up to 1 million tokens, released in June of 2025.

Read the official model reference ↗.

Where this model fits

gemini-2.5-flash is part of the Google API catalog. Its documented modalities are text, image, audio, video, audio-in. Choose it against the request format, output requirements and operational limits of your application.

The source metadata identifies support for vision. Confirm endpoint-specific parameters in the official reference before integrating that capability.

For a repeatable evaluation, use representative requests, inspect structured output or tool calls, and log latency and usage in your own account. Catalog metadata establishes compatibility; it does not measure answer quality on your workload. Start from the provider guide for authentication and endpoint setup.

Current pricing

Verified model prices
ModelPrice typeUSDUnitTierRegionSource
Gemini 2.5 FlashBatch Input$0.15per 1M tokensStandardSee sourceOfficial source ↗
Gemini 2.5 FlashBatch Output$1.25per 1M tokensStandardSee sourceOfficial source ↗
Gemini 2.5 FlashCached Input$0.03per 1M tokensStandardSee sourceOfficial source ↗
Gemini 2.5 FlashInput$0.3per 1M tokensStandardSee sourceOfficial source ↗
Gemini 2.5 FlashInputFreeper 1M tokensfree tierSee sourceOfficial source ↗
Gemini 2.5 FlashOutput$2.5per 1M tokensStandardSee sourceOfficial source ↗
Gemini 2.5 FlashOutputFreeper 1M tokensfree tierSee sourceOfficial source ↗

Last verified · Source ↗

Estimate request, daily and monthly usage in the API cost calculator.

Rate limits and availability

Verified rate limits
Model or scopeTierMetricLimitNotesSource
Gemini 2.5 Flash
gemini-2.5-flash		Tier 1batch_queue3,000,000Batch enqueued tokens, not synchronous TPM.Official source ↗
Gemini 2.5 Flash
gemini-2.5-flash		Tier 2batch_queue400,000,000Batch enqueued tokens, not synchronous TPM.Official source ↗
Gemini 2.5 Flash
gemini-2.5-flash		Tier 3batch_queue1,000,000,000Batch enqueued tokens, not synchronous TPM.Official source ↗

Last verified · Source ↗

Account-specific capacity may differ. Check the provider rate-limit guide and the free-tier conditions.

Three alternatives to compare

These alternatives share a documented modality and have the closest combination of input price and context size in the current catalog. This is a specification comparison, not a quality benchmark.

Computed model alternatives
ModelProviderInput / 1M tokensContext
Gemini 3.5 Flash-LiteGoogle$0.31,048,576
Google: Gemini 2.5 FlashOpenRouter$0.31,048,576
Google: Gemini 3.5 Flash LiteOpenRouter$0.31,048,576

Use the exact identifier in Python

This identifier fragment belongs in the authenticated request described in the provider Python tutorial. The tutorial covers the correct SDK, endpoint, environment variable and response shape.

model = "gemini-2.5-flash"
# Pass model to the provider-specific request in the tutorial.

Recent changes

  1. Google · Gemini 2.5 Flash — MetadataModalities: ["text"] → Modalities: ["text","image","audio","video","audio-in"]Source ↗
  2. Google · Gemini 2.5 Flash — ValueNot previously recorded → Tier: Tier 3 · Metric: batch_queue · Value: 1000000000 · Notes: Batch enqueued tokens, not synchronous TPM.Source ↗
  3. Google · Gemini 2.5 Flash — ValueNot previously recorded → Tier: Tier 2 · Metric: batch_queue · Value: 400000000 · Notes: Batch enqueued tokens, not synchronous TPM.Source ↗
  4. Google · Gemini 2.5 Flash — ValueNot previously recorded → Tier: Tier 1 · Metric: batch_queue · Value: 3000000 · Notes: Batch enqueued tokens, not synchronous TPM.Source ↗
  5. Google · Gemini 2.5 Flash — Amount UsdNot previously recorded → Price category: batch_output · USD: 1.25 · Unit: per 1M tokensSource ↗
  6. Google · Gemini 2.5 Flash — Amount UsdNot previously recorded → Price category: batch_input · USD: 0.15 · Unit: per 1M tokensSource ↗
  7. Google · Gemini 2.5 Flash — Amount UsdNot previously recorded → Price category: cached_input · USD: 0.03 · Unit: per 1M tokensSource ↗
  8. Google · Gemini 2.5 Flash — Amount UsdNot previously recorded → Price category: output · USD: 0 · Unit: free · Tier: free tierSource ↗
  9. Google · Gemini 2.5 Flash — Amount UsdNot previously recorded → Price category: output · USD: 2.5 · Unit: per 1M tokensSource ↗
  10. Google · Gemini 2.5 Flash — Amount UsdNot previously recorded → Price category: input · USD: 0 · Unit: free · Tier: free tierSource ↗

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Frequently asked questions

What is the exact API model identifier?
Use gemini-2.5-flash exactly as shown in the provider model reference. Display names are not interchangeable with API identifiers.
How much does this model cost?
The current verified prices and billing units are listed in the pricing table above. Cache, batch, tier and region conditions remain separate rows when the provider documents them.
How much input can the model accept?
The model card shows the documented context window and maximum output when available. Your request must leave room for both input and generated output, including any provider-specific reasoning allocation.
Can I use a free tier?
Check the linked provider free-tier page for eligibility and account conditions. An account credit or temporary trial does not establish a permanent free rate.
Where do these model facts come from?
Official provider references are linked beside the data and in Sources. Changes are recorded with observation times; unresolved or undocumented fields are left unavailable.

Sources

Last verified · Source ↗