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).
- Organization
- Family
- gemini-flash
- 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.
| Provider | Model ID | Context | Output | Input / output · 1M | Reasoning | Tools | Structured | Details |
|---|---|---|---|---|---|---|---|---|
| 302.AI | gemini-2.5-flash-nothink | 1,000,000 | 65,536 | — / — | — | — | — | View |
| 302.AI | gemini-2.5-flash | 1,000,000 | 65,536 | — / — | — | — | — | View |
| Abacus | gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| AIHubMix | gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| AnyAPI | google/gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Auriko | gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Cloudflare AI Gateway | google/gemini-2.5-flash | 1,000,000 | 65,536 | — / — | — | — | — | View |
| Cortecs | gemini-2.5-flash | 1,048,576 | 65,535 | — / — | — | — | — | View |
| CrossModel | gemini/gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Databricks | databricks-gemini-2-5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| FastRouter | google/gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| FrogBot | gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View | |
| Helicone | gemini-2.5-flash | 1,048,576 | 65,535 | — / — | — | — | — | View |
| Impossibl | google/gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Jiekou.AI | gemini-2.5-flash | 1,048,576 | 65,535 | — / — | — | — | — | View |
| Kenari | gemini-2-5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Kilo Gateway | google/gemini-2.5-flash | 1,048,576 | 65,535 | — / — | — | — | — | View |
| Merge Gateway | google/gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Modelis | gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| NanoGPT | gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| NEAR AI Cloud | google/gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Ofox | google/gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Googlevia OpenRouter | google/gemini-2.5-flash unknown | 1,048,576 | 65,535 | $0.30 / $2.50 | Yes | Yes | Yes | View |
| Googlevia OpenRouter | google/gemini-2.5-flash unknown | 1,048,576 | 65,535 | $0.30 / $2.50 | Yes | Yes | Yes | View |
| Googlevia OpenRouter | google/gemini-2.5-flash unknown | 1,048,576 | 65,535 | $0.30 / $2.50 | Yes | Yes | Yes | View |
| Googlevia OpenRouter | google/gemini-2.5-flash unknown | 1,048,576 | 65,535 | $0.54 / $4.50 | Yes | Yes | Yes | View |
| Google AI Studiovia OpenRouter | google/gemini-2.5-flash unknown | 1,048,576 | 65,535 | $0.15 / $1.25 | Yes | Yes | Yes | View |
| Google AI Studiovia OpenRouter | google/gemini-2.5-flash unknown | 1,048,576 | 65,535 | $0.30 / $2.50 | Yes | Yes | Yes | View |
| Google AI Studiovia OpenRouter | google/gemini-2.5-flash unknown | 1,048,576 | 65,535 | $0.54 / $4.50 | Yes | Yes | Yes | View |
| OrcaRouter | google/gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Poe | google/gemini-2.5-flash | 1,065,535 | 65,535 | — / — | — | — | — | View |
| QiHang | gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Qiniu | gemini-2.5-flash | 1,048,576 | 64,000 | — / — | — | — | — | View |
| Requesty | gemini-2.5-flash@eu | 1,048,576 | 65,535 | — / — | — | — | — | View |
| SAP AI Core | gemini-2.5-flash | 1,048,576 | 65,536 | — / — | — | — | — | View |
| Standard Compute | google/gemini-2.5-flash | 1,048,576 | 50,000 | — / — | — | — | — | View |
| Vercel AI Gateway | google/gemini-2.5-flash | 1,000,000 | 65,535 | — / — | — | — | — | View |
| ZenMux | google/gemini-2.5-flash | 1,048,000 | 65,535 | — / — | — | — | — | 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.
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.
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
| Endpoint | Input / 1M | Output / 1M | Cache read / 1M | Cache 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.
Time to first token · milliseconds
All latency percentiles 7 endpoints
| Endpoint | P50 | P75 | P90 | P99 |
|---|---|---|---|---|
| Googlegoogle-vertex/eu | 741 ms | 933 ms | 1,512.8 ms | 4,066.8 ms |
| Googlegoogle-vertex | 1,174.5 ms | 1,622.75 ms | 4,316 ms | 10,442 ms |
| Googlegoogle-vertex/global | 1,038 ms | 1,348 ms | 1,751.9 ms | 4,688.36 ms |
| Googlegoogle-vertex/global/priority | 825 ms | 994 ms | 1,160 ms | 2,893.98 ms |
| Google AI Studiogoogle-ai-studio/flex | 489.5 ms | 662.25 ms | 1,512.9 ms | 1,956.9 ms |
| Google AI Studiogoogle-ai-studio | 534 ms | 942 ms | 1,463 ms | 15,502.53 ms |
| Google AI Studiogoogle-ai-studio/priority | 784 ms | 833 ms | 862.4 ms | 880.04 ms |
Output throughput · tokens per second
All throughput percentiles 7 endpoints
| Endpoint | P50 | P75 | P90 | P99 |
|---|---|---|---|---|
| Googlegoogle-vertex/eu | 92 t/s | 136.25 t/s | 162 t/s | 212 t/s |
| Googlegoogle-vertex | 93 t/s | 128 t/s | 159 t/s | 224.92 t/s |
| Googlegoogle-vertex/global | 85 t/s | 120 t/s | 155 t/s | 242 t/s |
| Googlegoogle-vertex/global/priority | 82 t/s | 110.25 t/s | 125.4 t/s | 158.66 t/s |
| Google AI Studiogoogle-ai-studio/flex | 152 t/s | 168 t/s | 180.4 t/s | 219 t/s |
| Google AI Studiogoogle-ai-studio | 106 t/s | 160 t/s | 200 t/s | 241 t/s |
| Google AI Studiogoogle-ai-studio/priority | 150 t/s | 173.5 t/s | 187.6 t/s | 196.06 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.
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.
google/gemini-2.5-flashObserved | Design Arena | Category | Elo | Win rate | Rank |
|---|---|---|---|---|
| models | 3d | 1,076 | 47.4% | 94 |
| models | codecategories | 1,108 | 46.9% | 94 |
| models | dataviz | 1,137 | 49.1% | 83 |
| models | gamedev | 1,073 | 44.3% | 99 |
| models | uicomponent | 1,096 | 48.9% | 91 |
| models | website | 1,118 | 47.1% | 96 |
| models | svg | 1,019 | 43.1% | 80 |
Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.
Detailed evaluations
| Evaluation | Configuration | Source | Results | Details |
|---|---|---|---|---|
| models · uicomponent | Gemini 2.5 Flash Preview 09-2025google/gemini-2.5-flash | Design Arena | 1,090 Elo | Details |
| models · 3d | Gemini 2.5 Flash Preview 09-2025google/gemini-2.5-flash | Design Arena | 1,071 Elo | Details |
| models · svg | Gemini 2.5 Flash Preview 09-2025google/gemini-2.5-flash | Design Arena | 1,020 Elo | Details |
| models · uicomponent | Gemini 2.5 Flashgoogle/gemini-2.5-flash | Design Arena | 1,003 Elo | Details |
| models · website | Gemini 2.5 Flash Preview 09-2025google/gemini-2.5-flash | Design Arena | 1,115 Elo | Details |
| tau bench verified airline | Google: Gemini 2.5 Flashgoogle/gemini-2.5-flash | OpenRouter | 57.111% | Details |
| models · codecategories | Gemini 2.5 Flashgoogle/gemini-2.5-flash | Design Arena | 1,059 Elo | Details |
| models · dataviz | Gemini 2.5 Flash Preview 09-2025google/gemini-2.5-flash | Design Arena | 1,134 Elo | Details |
| models · codecategories | Gemini 2.5 Flash Preview 09-2025google/gemini-2.5-flash | Design Arena | 1,104 Elo | Details |
| models · 3d | Gemini 2.5 Flashgoogle/gemini-2.5-flash | Design Arena | 1,021 Elo | Details |
| Composite indices | Gemini 2.5 Flash Preview (Sep '25) (Reasoning)google/gemini-2.5-flash | Artificial Analysis | Intelligence 15.5 · Coding — · Agentic — | Details |
| models · dataviz | Gemini 2.5 Flashgoogle/gemini-2.5-flash | Design Arena | 1,060 Elo | Details |
| models · website | Gemini 2.5 Flashgoogle/gemini-2.5-flash | Design Arena | 1,074 Elo | Details |
| models · gamedev | Gemini 2.5 Flashgoogle/gemini-2.5-flash | Design Arena | 1,005 Elo | Details |
| gpqa diamond | Google: Gemini 2.5 Flashgoogle/gemini-2.5-flash | OpenRouter | 72.615% | Details |
| models · gamedev | Gemini 2.5 Flash Preview 09-2025google/gemini-2.5-flash | Design Arena | 1,066 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.
| Application | Model route | Turns | Median cost / session | Details |
|---|---|---|---|---|
| Hermes Agent | google/gemini-2.5-flash | 10–49 turns | $0.068544 | Details |
| Hermes Agent | google/gemini-2.5-flash | 2–9 turns | $0.011443 | Details |
| Hermes Agent | google/gemini-2.5-flash | 50+ turns | $0.535627 | Details |
| Hermes Agent | google/gemini-2.5-flash | 1 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.
88,175,503,431 tokens
85,073,131,102 tokens
82,153,075,898 tokens
82,698,783,488 tokens
81,100,731,306 tokens
72,285,145,498 tokens
59,820,970,155 tokens
80,256,791,525 tokens
85,427,245,189 tokens
79,836,336,548 tokens
73,039,967,047 tokens
77,576,616,347 tokens
60,625,866,439 tokens
62,239,649,094 tokens
80,826,697,348 tokens
76,064,973,970 tokens
70,431,081,993 tokens
71,803,143,780 tokens
66,246,058,062 tokens
50,767,244,284 tokens
48,669,387,472 tokens
64,520,541,435 tokens
65,741,159,528 tokens
74,154,138,959 tokens
72,976,529,136 tokens
70,733,969,454 tokens
49,963,383,586 tokens
47,958,508,458 tokens
62,188,213,336 tokens
66,786,904,659 tokens
68,528,310,681 tokens
69,866,938,238 tokens
63,707,727,215 tokens
49,194,099,157 tokens
50,437,772,127 tokens
70,326,631,274 tokens
82,172,611,702 tokens
79,966,973,806 tokens
83,409,412,790 tokens
74,213,322,893 tokens
61,213,136,916 tokens
53,927,197,356 tokens
62,829,517,133 tokens
70,195,558,462 tokens
72,060,992,626 tokens
74,674,736,012 tokens
67,141,858,681 tokens
55,061,837,471 tokens
50,986,419,937 tokens
74,518,148,050 tokens
74,352,816,528 tokens
81,298,899,143 tokens
74,560,218,661 tokens
72,260,125,487 tokens
56,985,018,648 tokens
50,742,784,005 tokens
80,234,123,900 tokens
81,323,530,248 tokens
80,082,584,928 tokens
71,083,786,532 tokens
71,007,128,407 tokens
55,497,736,684 tokens
49,788,692,773 tokens
66,175,667,564 tokens
74,086,959,818 tokens
70,022,255,456 tokens
71,962,411,813 tokens
80,556,313,994 tokens
58,020,919,767 tokens
56,855,453,625 tokens
70,767,161,371 tokens
68,915,973,396 tokens
65,146,854,660 tokens
64,145,661,804 tokens
60,816,761,143 tokens
51,134,129,884 tokens
59,496,528,452 tokens
59,916,006,186 tokens
60,234,923,689 tokens
56,902,201,962 tokens
Daily observations · 80 days
| Date (UTC) | Reported tokens | Reported routes |
|---|---|---|
| Oct 15, 2026 | 56,902,201,962 | 1 |
| Oct 14, 2026 | 60,234,923,689 | 1 |
| Oct 13, 2026 | 59,916,006,186 | 1 |
| Oct 12, 2026 | 59,496,528,452 | 1 |
| Oct 10, 2026 | 51,134,129,884 | 1 |
| Oct 9, 2026 | 60,816,761,143 | 1 |
| Oct 8, 2026 | 64,145,661,804 | 1 |
| Oct 7, 2026 | 65,146,854,660 | 1 |
| Oct 6, 2026 | 68,915,973,396 | 1 |
| Oct 5, 2026 | 70,767,161,371 | 1 |
| Oct 4, 2026 | 56,855,453,625 | 1 |
| Oct 3, 2026 | 58,020,919,767 | 1 |
| Oct 2, 2026 | 80,556,313,994 | 1 |
| Oct 1, 2026 | 71,962,411,813 | 1 |
| Sep 30, 2026 | 70,022,255,456 | 1 |
| Sep 29, 2026 | 74,086,959,818 | 1 |
| Sep 28, 2026 | 66,175,667,564 | 1 |
| Sep 27, 2026 | 49,788,692,773 | 1 |
| Sep 26, 2026 | 55,497,736,684 | 1 |
| Sep 25, 2026 | 71,007,128,407 | 1 |
| Sep 24, 2026 | 71,083,786,532 | 1 |
| Sep 23, 2026 | 80,082,584,928 | 1 |
| Sep 22, 2026 | 81,323,530,248 | 1 |
| Sep 21, 2026 | 80,234,123,900 | 1 |
| Sep 20, 2026 | 50,742,784,005 | 1 |
| Sep 19, 2026 | 56,985,018,648 | 1 |
| Sep 18, 2026 | 72,260,125,487 | 1 |
| Sep 17, 2026 | 74,560,218,661 | 1 |
| Sep 16, 2026 | 81,298,899,143 | 1 |
| Sep 15, 2026 | 74,352,816,528 | 1 |
| Sep 14, 2026 | 74,518,148,050 | 1 |
| Sep 13, 2026 | 50,986,419,937 | 1 |
| Sep 12, 2026 | 55,061,837,471 | 1 |
| Sep 11, 2026 | 67,141,858,681 | 1 |
| Sep 10, 2026 | 74,674,736,012 | 1 |
| Sep 9, 2026 | 72,060,992,626 | 1 |
| Sep 8, 2026 | 70,195,558,462 | 1 |
| Sep 7, 2026 | 62,829,517,133 | 1 |
| Sep 6, 2026 | 53,927,197,356 | 1 |
| Sep 5, 2026 | 61,213,136,916 | 1 |
| Sep 4, 2026 | 74,213,322,893 | 1 |
| Sep 3, 2026 | 83,409,412,790 | 1 |
| Sep 2, 2026 | 79,966,973,806 | 1 |
| Sep 1, 2026 | 82,172,611,702 | 1 |
| Aug 31, 2026 | 70,326,631,274 | 1 |
| Aug 30, 2026 | 50,437,772,127 | 1 |
| Aug 29, 2026 | 49,194,099,157 | 1 |
| Aug 28, 2026 | 63,707,727,215 | 1 |
| Aug 27, 2026 | 69,866,938,238 | 1 |
| Aug 26, 2026 | 68,528,310,681 | 1 |
| Aug 25, 2026 | 66,786,904,659 | 1 |
| Aug 24, 2026 | 62,188,213,336 | 1 |
| Aug 23, 2026 | 47,958,508,458 | 1 |
| Aug 22, 2026 | 49,963,383,586 | 1 |
| Aug 21, 2026 | 70,733,969,454 | 1 |
| Aug 20, 2026 | 72,976,529,136 | 1 |
| Aug 19, 2026 | 74,154,138,959 | 1 |
| Aug 18, 2026 | 65,741,159,528 | 1 |
| Aug 17, 2026 | 64,520,541,435 | 1 |
| Aug 16, 2026 | 48,669,387,472 | 1 |
| Aug 15, 2026 | 50,767,244,284 | 1 |
| Aug 14, 2026 | 66,246,058,062 | 1 |
| Aug 13, 2026 | 71,803,143,780 | 1 |
| Aug 12, 2026 | 70,431,081,993 | 1 |
| Aug 11, 2026 | 76,064,973,970 | 1 |
| Aug 10, 2026 | 80,826,697,348 | 1 |
| Aug 9, 2026 | 62,239,649,094 | 1 |
| Aug 8, 2026 | 60,625,866,439 | 1 |
| Aug 7, 2026 | 77,576,616,347 | 1 |
| Aug 6, 2026 | 73,039,967,047 | 1 |
| Aug 5, 2026 | 79,836,336,548 | 1 |
| Aug 4, 2026 | 85,427,245,189 | 1 |
| Aug 3, 2026 | 80,256,791,525 | 1 |
| Aug 2, 2026 | 59,820,970,155 | 1 |
| Aug 1, 2026 | 72,285,145,498 | 1 |
| Jul 31, 2026 | 81,100,731,306 | 1 |
| Jul 30, 2026 | 82,698,783,488 | 1 |
| Jul 29, 2026 | 82,153,075,898 | 1 |
| Jul 28, 2026 | 85,073,131,102 | 1 |
| Jul 27, 2026 | 88,175,503,431 | 1 |
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.
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
https://openrouter.ai/api/v1google/gemini-2.5-flashgoogle/gemini-2.5-flashReasoning
- Required
- No
- Enabled by default
- Not reported
- Default effort
- —
- Supported efforts
- —
Supported parameters
include_reasoningmax_tokensreasoningresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_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