Gemini 2.5 Flash

Gemini 2.5 Flash is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinking" capabilities, enabling it to provide responses with greater accuracy and nuanced context handling.

Additionally, Gemini 2.5 Flash is configurable through the "max tokens for reasoning" parameter, as described in the documentation (https://openrouter.ai/docs/use-cases/reasoning-tokens#max-tokens-for-reasoning).

google/gemini-2.5-flash
Organization
Google
Providers
32
Context
1,048,576
Output limit
65,536
Knowledge
2025-01
Release
2025-06-17
Updated
—
Weights
Closed
Input
text, image/png, image/jpeg, image/webp, image/heic, image/heif, audio/wav, audio/mp3, audio/aiff, audio/aac, audio/ogg, audio/flac, audio/mpeg, audio/m4a, audio/l16, audio/opus, audio/alaw, audio/mulaw, audio/webm, video/mp4, video/mpeg, video/mov, video/avi, video/x-flv, video/mpg, video/webm, video/wmv, video/3gpp, application/pdf
Output
text
Capabilities
—

Providers

Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.

39 offers · USD per million tokens
ProviderModel IDContextOutputInput / output · 1MReasoningToolsStructuredDetails
302.AI
gemini-2.5-flash-nothink
1,000,00065,536— / ————
View
302.AI
gemini-2.5-flash
1,000,00065,536— / ————
View
Abacus
gemini-2.5-flash
1,048,57665,536— / ————
View
AIHubMix
gemini-2.5-flash
1,048,57665,536— / ————
View
AnyAPI
google/gemini-2.5-flash
1,048,57665,536— / ————
View
Auriko
gemini-2.5-flash
1,048,57665,536— / ————
View
Cloudflare AI Gateway
google/gemini-2.5-flash
1,000,00065,536— / ————
View
Cortecs
gemini-2.5-flash
1,048,57665,535— / ————
View
CrossModel
gemini/gemini-2.5-flash
1,048,57665,536— / ————
View
Databricks
databricks-gemini-2-5-flash
1,048,57665,536— / ————
View
FastRouter
google/gemini-2.5-flash
1,048,57665,536— / ————
View
FrogBot
gemini-2.5-flash
1,048,57665,536— / ————
View
Google
gemini-2.5-flash
1,048,57665,536— / ————
View
Helicone
gemini-2.5-flash
1,048,57665,535— / ————
View
Impossibl
google/gemini-2.5-flash
1,048,57665,536— / ————
View
Jiekou.AI
gemini-2.5-flash
1,048,57665,535— / ————
View
Kenari
gemini-2-5-flash
1,048,57665,536— / ————
View
Kilo Gateway
google/gemini-2.5-flash
1,048,57665,535— / ————
View
Merge Gateway
google/gemini-2.5-flash
1,048,57665,536— / ————
View
Modelis
gemini-2.5-flash
1,048,57665,536— / ————
View
NanoGPT
gemini-2.5-flash
1,048,57665,536— / ————
View
NEAR AI Cloud
google/gemini-2.5-flash
1,048,57665,536— / ————
View
Ofox
google/gemini-2.5-flash
1,048,57665,536— / ————
View
Googlevia OpenRouter
google/gemini-2.5-flash
unknown
1,048,57665,535$0.30 / $2.50YesYesYes
View
Googlevia OpenRouter
google/gemini-2.5-flash
unknown
1,048,57665,535$0.30 / $2.50YesYesYes
View
Googlevia OpenRouter
google/gemini-2.5-flash
unknown
1,048,57665,535$0.30 / $2.50YesYesYes
View
Googlevia OpenRouter
google/gemini-2.5-flash
unknown
1,048,57665,535$0.54 / $4.50YesYesYes
View
Google AI Studiovia OpenRouter
google/gemini-2.5-flash
unknown
1,048,57665,535$0.15 / $1.25YesYesYes
View
Google AI Studiovia OpenRouter
google/gemini-2.5-flash
unknown
1,048,57665,535$0.30 / $2.50YesYesYes
View
Google AI Studiovia OpenRouter
google/gemini-2.5-flash
unknown
1,048,57665,535$0.54 / $4.50YesYesYes
View
OrcaRouter
google/gemini-2.5-flash
1,048,57665,536— / ————
View
Poe
google/gemini-2.5-flash
1,065,53565,535— / ————
View
QiHang
gemini-2.5-flash
1,048,57665,536— / ————
View
Qiniu
gemini-2.5-flash
1,048,57664,000— / ————
View
Requesty
gemini-2.5-flash@eu
1,048,57665,535— / ————
View
SAP AI Core
gemini-2.5-flash
1,048,57665,536— / ————
View
Standard Compute
google/gemini-2.5-flash
1,048,57650,000— / ————
View
Vercel AI Gateway
google/gemini-2.5-flash
1,000,00065,535— / ————
View
ZenMux
google/gemini-2.5-flash
1,048,00065,535— / ————
View

Prices and limits apply to each offer. A dash means the value is not provided. OpenRouter offers show the hosting provider and routing channel separately.

Pricing

Compare token rates and cache charges across available routes and hosting configurations.

USD per million tokens
Input from$0.15Per 1M input tokens
Output from$1.25Per 1M output tokens
Available offers39Across 32 providers

Lowest listed input and output prices across the offers above; they may belong to different providers. These are base rates, before conditional pricing, discounts or additional fees.

Endpoint price comparisonLatest observed snapshot · 7 lowest-priced configurations
InputOutput
Google AI Studiogoogle-ai-studio/flex
$0.15$1.25
Googlegoogle-vertex/eu
$0.30$2.50
Googlegoogle-vertex
$0.30$2.50
Googlegoogle-vertex/global
$0.30$2.50
Google AI Studiogoogle-ai-studio
$0.30$2.50
Googlegoogle-vertex/global/priority
$0.54$4.50
Google AI Studiogoogle-ai-studio/priority
$0.54$4.50
google/gemini-2.5-flashObserved
Input
$0.30
Output
$2.50
Cache read
$0.03
Cache write
$0.083333
Additional fees and pricing conditions
audio
$0.000001 / audio token
image
$0.0000003 / image
web search
$0.014 / search
input audio cache
$0.0000001 / audio token
internal reasoning
$0.0000025 / reasoning token
Hosting prices through OpenRouter All endpoints and cache rates
EndpointInput / 1MOutput / 1MCache read / 1MCache write / 1M
Googlegoogle-vertex/eu$0.30$2.50$0.03$0.083333
Googlegoogle-vertex$0.30$2.50$0.03$0.083333
Googlegoogle-vertex/global$0.30$2.50$0.03$0.083333
Googlegoogle-vertex/global/priority$0.54$4.50$0.054$0.15
Google AI Studiogoogle-ai-studio/flex$0.15$1.25$0.015$0.041667
Google AI Studiogoogle-ai-studio$0.30$2.50$0.03$0.083333
Google AI Studiogoogle-ai-studio/priority$0.54$4.50$0.054$0.15

Each row is a hosting configuration. Open an offer in Providers for its full pricing conditions and additional fees. Endpoint observations may differ from the routing catalog's base price.

Performance

Review reported latency and output-throughput percentiles from the latest observed rolling window.

Latest 30-minute observation

Time to first token · milliseconds

Latency distributionRolling 30-minute snapshot · 6 endpoints
P50P75P90P99
Googlegoogle-vertex/eu
741–4,066.8 ms
Googlegoogle-vertex
1,174.5–10,442 ms
Googlegoogle-vertex/global
1,038–4,688.36 ms
Googlegoogle-vertex/global/priority
825–2,893.98 ms
Google AI Studiogoogle-ai-studio/flex
489.5–1,956.9 ms
Google AI Studiogoogle-ai-studio
534–15,502.53 ms
All latency percentiles 7 endpoints
EndpointP50P75P90P99
Googlegoogle-vertex/eu741 ms933 ms1,512.8 ms4,066.8 ms
Googlegoogle-vertex1,174.5 ms1,622.75 ms4,316 ms10,442 ms
Googlegoogle-vertex/global1,038 ms1,348 ms1,751.9 ms4,688.36 ms
Googlegoogle-vertex/global/priority825 ms994 ms1,160 ms2,893.98 ms
Google AI Studiogoogle-ai-studio/flex489.5 ms662.25 ms1,512.9 ms1,956.9 ms
Google AI Studiogoogle-ai-studio534 ms942 ms1,463 ms15,502.53 ms
Google AI Studiogoogle-ai-studio/priority784 ms833 ms862.4 ms880.04 ms

Output throughput · tokens per second

Throughput distributionRolling 30-minute snapshot · 6 endpoints
P50P75P90P99
Googlegoogle-vertex/eu
92–212 t/s
Googlegoogle-vertex
93–224.92 t/s
Googlegoogle-vertex/global
85–242 t/s
Googlegoogle-vertex/global/priority
82–158.66 t/s
Google AI Studiogoogle-ai-studio/flex
152–219 t/s
Google AI Studiogoogle-ai-studio
106–241 t/s
All throughput percentiles 7 endpoints
EndpointP50P75P90P99
Googlegoogle-vertex/eu92 t/s136.25 t/s162 t/s212 t/s
Googlegoogle-vertex93 t/s128 t/s159 t/s224.92 t/s
Googlegoogle-vertex/global85 t/s120 t/s155 t/s242 t/s
Googlegoogle-vertex/global/priority82 t/s110.25 t/s125.4 t/s158.66 t/s
Google AI Studiogoogle-ai-studio/flex152 t/s168 t/s180.4 t/s219 t/s
Google AI Studiogoogle-ai-studio106 t/s160 t/s200 t/s241 t/s
Google AI Studiogoogle-ai-studio/priority150 t/s173.5 t/s187.6 t/s196.06 t/s

Percentiles describe the observed request distribution. These are snapshots of a rolling window, not a historical time series.

Uptime

Compare successful request rates across the latest 5-minute, 30-minute, and 24-hour observations.

Successful requests by window
Availability by endpointCurrent overlapping windows · 7 endpoints
Endpoint5 minutes30 minutes24 hours
Googlegoogle-vertex/eu
Googlegoogle-vertex
Googlegoogle-vertex/global
Googlegoogle-vertex/global/priority
Google AI Studiogoogle-ai-studio/flex
Google AI Studiogoogle-ai-studio
Google AI Studiogoogle-ai-studio/priority

Reported by OpenRouter at the time of collection; rate-limited requests are excluded. A dash means no measurement was reported. This is not a live availability check.

Benchmarks

Review attributed evaluation results on each source's original scale.

External evaluations
google/gemini-2.5-flashObserved
Benchmark profileArtificial Analysis · shared source scale from 0 to 20
Intelligence15.5
Design ArenaCategoryEloWin rateRank
models3d1,07647.4%94
modelscodecategories1,10846.9%94
modelsdataviz1,13749.1%83
modelsgamedev1,07344.3%99
modelsuicomponent1,09648.9%91
modelswebsite1,11847.1%96
modelssvg1,01943.1%80

Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.

Detailed evaluations

Evaluation scoresAccuracy or item F1 · higher is better
tau bench verified airlineGoogle: Gemini 2.5 Flash
57.111%
gpqa diamondGoogle: Gemini 2.5 Flash
72.615%
EvaluationConfigurationSourceResultsDetails
models · uicomponentGemini 2.5 Flash Preview 09-2025google/gemini-2.5-flashDesign Arena1,090 Elo
Details
models · 3dGemini 2.5 Flash Preview 09-2025google/gemini-2.5-flashDesign Arena1,071 Elo
Details
models · svgGemini 2.5 Flash Preview 09-2025google/gemini-2.5-flashDesign Arena1,020 Elo
Details
models · uicomponentGemini 2.5 Flashgoogle/gemini-2.5-flashDesign Arena1,003 Elo
Details
models · websiteGemini 2.5 Flash Preview 09-2025google/gemini-2.5-flashDesign Arena1,115 Elo
Details
tau bench verified airlineGoogle: Gemini 2.5 Flashgoogle/gemini-2.5-flashOpenRouter57.111%
Details
models · codecategoriesGemini 2.5 Flashgoogle/gemini-2.5-flashDesign Arena1,059 Elo
Details
models · datavizGemini 2.5 Flash Preview 09-2025google/gemini-2.5-flashDesign Arena1,134 Elo
Details
models · codecategoriesGemini 2.5 Flash Preview 09-2025google/gemini-2.5-flashDesign Arena1,104 Elo
Details
models · 3dGemini 2.5 Flashgoogle/gemini-2.5-flashDesign Arena1,021 Elo
Details
Composite indicesGemini 2.5 Flash Preview (Sep '25) (Reasoning)google/gemini-2.5-flashArtificial AnalysisIntelligence 15.5 · Coding — · Agentic —
Details
models · datavizGemini 2.5 Flashgoogle/gemini-2.5-flashDesign Arena1,060 Elo
Details
models · websiteGemini 2.5 Flashgoogle/gemini-2.5-flashDesign Arena1,074 Elo
Details
models · gamedevGemini 2.5 Flashgoogle/gemini-2.5-flashDesign Arena1,005 Elo
Details
gpqa diamondGoogle: Gemini 2.5 Flashgoogle/gemini-2.5-flashOpenRouter72.615%
Details
models · gamedevGemini 2.5 Flash Preview 09-2025google/gemini-2.5-flashDesign Arena1,066 Elo
Details

Sources: Artificial Analysis, Design Arena and OpenRouter. Evaluation configurations and scales differ; results are not interchangeable. Updated Oct 24, 2026.

Apps & session costs

Compare observed median session costs for applications using this model, grouped by conversation length.

30-day sample · through Oct 18, 2026
ApplicationModel routeTurnsMedian cost / sessionDetails
Hermes Agentgoogle/gemini-2.5-flash10–49 turns
$0.068544
Details
Hermes Agentgoogle/gemini-2.5-flash2–9 turns
$0.011443
Details
Hermes Agentgoogle/gemini-2.5-flash50+ turns
$0.535627
Details
Hermes Agentgoogle/gemini-2.5-flash1 turn
$0.003123
Details

Source: OpenRouter, as of Oct 20, 2026. Published under CC BY 4.0. These are observed costs per session, not token prices or a forecast for your workload. Apps are compared separately.

Activity

Daily prompt and completion tokens reported for this model's routes in OpenRouter's top 50. Missing days have no published value.

Last 90 complete UTC days
Daily token usage5,438,948,581,582 reported tokens · 80 days with observations
Jul 26, 2026Oct 23, 2026
Daily observations · 80 days
Date (UTC)Reported tokensReported routes
Oct 15, 202656,902,201,9621
Oct 14, 202660,234,923,6891
Oct 13, 202659,916,006,1861
Oct 12, 202659,496,528,4521
Oct 10, 202651,134,129,8841
Oct 9, 202660,816,761,1431
Oct 8, 202664,145,661,8041
Oct 7, 202665,146,854,6601
Oct 6, 202668,915,973,3961
Oct 5, 202670,767,161,3711
Oct 4, 202656,855,453,6251
Oct 3, 202658,020,919,7671
Oct 2, 202680,556,313,9941
Oct 1, 202671,962,411,8131
Sep 30, 202670,022,255,4561
Sep 29, 202674,086,959,8181
Sep 28, 202666,175,667,5641
Sep 27, 202649,788,692,7731
Sep 26, 202655,497,736,6841
Sep 25, 202671,007,128,4071
Sep 24, 202671,083,786,5321
Sep 23, 202680,082,584,9281
Sep 22, 202681,323,530,2481
Sep 21, 202680,234,123,9001
Sep 20, 202650,742,784,0051
Sep 19, 202656,985,018,6481
Sep 18, 202672,260,125,4871
Sep 17, 202674,560,218,6611
Sep 16, 202681,298,899,1431
Sep 15, 202674,352,816,5281
Sep 14, 202674,518,148,0501
Sep 13, 202650,986,419,9371
Sep 12, 202655,061,837,4711
Sep 11, 202667,141,858,6811
Sep 10, 202674,674,736,0121
Sep 9, 202672,060,992,6261
Sep 8, 202670,195,558,4621
Sep 7, 202662,829,517,1331
Sep 6, 202653,927,197,3561
Sep 5, 202661,213,136,9161
Sep 4, 202674,213,322,8931
Sep 3, 202683,409,412,7901
Sep 2, 202679,966,973,8061
Sep 1, 202682,172,611,7021
Aug 31, 202670,326,631,2741
Aug 30, 202650,437,772,1271
Aug 29, 202649,194,099,1571
Aug 28, 202663,707,727,2151
Aug 27, 202669,866,938,2381
Aug 26, 202668,528,310,6811
Aug 25, 202666,786,904,6591
Aug 24, 202662,188,213,3361
Aug 23, 202647,958,508,4581
Aug 22, 202649,963,383,5861
Aug 21, 202670,733,969,4541
Aug 20, 202672,976,529,1361
Aug 19, 202674,154,138,9591
Aug 18, 202665,741,159,5281
Aug 17, 202664,520,541,4351
Aug 16, 202648,669,387,4721
Aug 15, 202650,767,244,2841
Aug 14, 202666,246,058,0621
Aug 13, 202671,803,143,7801
Aug 12, 202670,431,081,9931
Aug 11, 202676,064,973,9701
Aug 10, 202680,826,697,3481
Aug 9, 202662,239,649,0941
Aug 8, 202660,625,866,4391
Aug 7, 202677,576,616,3471
Aug 6, 202673,039,967,0471
Aug 5, 202679,836,336,5481
Aug 4, 202685,427,245,1891
Aug 3, 202680,256,791,5251
Aug 2, 202659,820,970,1551
Aug 1, 202672,285,145,4981
Jul 31, 202681,100,731,3061
Jul 30, 202682,698,783,4881
Jul 29, 202682,153,075,8981
Jul 28, 202685,073,131,1021
Jul 27, 202688,175,503,4311

Source: OpenRouter (openrouter.ai/rankings), as of Oct 24, 2026. CC BY 4.0. Totals include only individually published routes. Tokenizers differ by provider; the aggregated “other” category is never assigned to a model.

Technical details & API

Explore specifications, supported parameters, reasoning controls, and API identifiers for each OpenRouter route.

Current route specifications
google/gemini-2.5-flashObserved
Context
1,048,576
Maximum output
65,535
Tokenizer
Gemini
Input
file, image, text, audio, video
Output
text
Moderation
No
Knowledge cutoff
2025-01-31
Retirement
2026-10-20
Added to OpenRouter
2025-06-17
Base URLhttps://openrouter.ai/api/v1
Model IDgoogle/gemini-2.5-flash
Version IDgoogle/gemini-2.5-flash

Reasoning

Required
No
Enabled by default
Not reported
Default effort
—
Supported efforts
—

Supported parameters

  • include_reasoning
  • max_tokens
  • reasoning
  • response_format
  • seed
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_p

Frequently asked questions

Answers based on the model metadata and serving offers currently in the catalog.

How much does Gemini 2.5 Flash cost?

Listed rates start at $0.15 per million input tokens and $1.25 per million output tokens. Prices vary by provider and configuration; see Pricing for details.

Which providers offer Gemini 2.5 Flash?

There are 39 cataloged offers across 32 providers. Compare model IDs, prices and limits in Providers.

What is the context window?

The cataloged model context is 1,048,576 tokens. Each serving endpoint may apply a different limit.

Does it support tools and structured output?

Tool calling: Not reported. Structured output: Not reported. Support can vary by endpoint.

Catalog history · 3 recorded revisions

Metadata observations since this model was first cataloged. These are not model release versions.

  • · 74cd60fc549c
  • · 56d1c9aa103b
  • · 9c129d8a0eb2