Skip to content
Alpha
  • Models
  • Rankings
  • Ori

Footer

OpenRouterOpenRouter
© 2026 OpenRouter, Inc

Product

  • Chat
  • Rankings
  • Benchmarks
  • Apps
  • Discover
  • Models
  • Ori
  • Collections
  • Providers
  • Tools
  • Pricing
  • Business
  • Enterprise
  • Labs

Company

  • About
  • Blog
  • Customers
  • Careers
    Hiring
  • Privacy
  • Terms of Service
  • Trust Center
  • Support
  • Works With OR
  • Data
  • Brand

Developer

  • Documentation
  • API Reference
  • Developer Platform
  • Status
  • AI Site Map

Connect

  • Discord
  • GitHub
  • LinkedIn
  • X
  • YouTube
Favicon for google

Google: Gemini 2.5 Flash

google/gemini-2.5-flash

Compare

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-reasoningOpens in new tab).

Modalities
In / Out Price
$0.30 / $2.50per 1M
Context
1.0M
Released
Jun 17, 2025
Knowledge Cutoff
Jan 2025
Compare
ProvidersPricingPerformanceUptimeBenchmarksAppsActivityDocumentationFAQExplore

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick — Balanced (price + speed), Nitro (fastest), or Floor (cheapest).

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for Google: Gemini 2.5 Flash (Artificial Analysis, Design Arena and Vals AI)
SourceBenchmarkScore
Artificial AnalysisGemini 2.5 Flash Preview (Non-reasoning) Intelligence Index8.7
Artificial AnalysisGemini 2.5 Flash Preview (Non-reasoning) GPQA Diamond59.4%
Artificial AnalysisGemini 2.5 Flash Preview (Non-reasoning) HLE3.8%
Artificial AnalysisGemini 2.5 Flash Preview (Non-reasoning) LiveCodeBench40.6%
Artificial AnalysisGemini 2.5 Flash Preview (Non-reasoning) MMLU-Pro78.3%
Artificial AnalysisGemini 2.5 Flash Preview (Non-reasoning) AIME43.3%
Artificial AnalysisGemini 2.5 Flash Preview (Non-reasoning) MATH-50092.6%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) Intelligence Index12.4
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) Math Index56.7
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) GPQA Diamond76.6%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) HLE8.7%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) IFBench43.5%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) τ²-Bench Telecom28.4%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) AA-LCR60.0%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) CritPt0.0%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) LiveCodeBench62.5%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) Terminal-Bench Hard14.4%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) MMLU-Pro83.6%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) AA-Omniscience Accuracy26.8%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) AA-Omniscience Non-Hallucination Rate8.8%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Non-reasoning) AIME 202556.7%
Artificial AnalysisGemini 2.5 Flash (Reasoning) Intelligence Index13.1
Artificial AnalysisGemini 2.5 Flash (Reasoning) Math Index73.3
Artificial AnalysisGemini 2.5 Flash (Reasoning) GPQA Diamond79.0%
Artificial AnalysisGemini 2.5 Flash (Reasoning) HLE12.1%
Artificial AnalysisGemini 2.5 Flash (Reasoning) IFBench50.3%
Artificial AnalysisGemini 2.5 Flash (Reasoning) τ²-Bench Telecom31.6%
Artificial AnalysisGemini 2.5 Flash (Reasoning) AA-LCR65.3%
Artificial AnalysisGemini 2.5 Flash (Reasoning) CritPt1.1%
Artificial AnalysisGemini 2.5 Flash (Reasoning) LiveCodeBench69.5%
Artificial AnalysisGemini 2.5 Flash (Reasoning) Terminal-Bench Hard13.6%
Artificial AnalysisGemini 2.5 Flash (Reasoning) MMLU-Pro83.2%
Artificial AnalysisGemini 2.5 Flash (Reasoning) AA-Omniscience Accuracy26.0%
Artificial AnalysisGemini 2.5 Flash (Reasoning) AA-Omniscience Non-Hallucination Rate24.7%
Artificial AnalysisGemini 2.5 Flash (Reasoning) AIME 202573.3%
Artificial AnalysisGemini 2.5 Flash (Reasoning) AIME82.3%
Artificial AnalysisGemini 2.5 Flash (Reasoning) MATH-50098.1%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) Intelligence Index15.5
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) Math Index78.3
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) GPQA Diamond79.3%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) HLE13.8%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) IFBench52.3%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) τ²-Bench Telecom45.6%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) AA-LCR71.0%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) CritPt0.3%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) LiveCodeBench71.3%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) Terminal-Bench Hard16.7%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) MMLU-Pro84.2%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) AA-Omniscience Accuracy28.3%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) AA-Omniscience Non-Hallucination Rate10.1%
Artificial AnalysisGemini 2.5 Flash Preview (Sep '25) (Reasoning) AIME 202578.3%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) Intelligence Index9.9
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) Math Index60.3
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) GPQA Diamond68.3%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) HLE4.7%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) IFBench39.0%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) τ²-Bench Telecom14.9%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) AA-LCR49.9%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) CritPt1.4%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) LiveCodeBench49.5%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) Terminal-Bench Hard12.1%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) MMLU-Pro80.9%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) AA-Omniscience Accuracy26.1%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) AA-Omniscience Non-Hallucination Rate7.0%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) AIME 202560.3%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) AIME50.0%
Artificial AnalysisGemini 2.5 Flash (Non-reasoning) MATH-50093.2%
Artificial AnalysisGemini 2.5 Flash Preview (Reasoning) Intelligence Index11.7
Artificial AnalysisGemini 2.5 Flash Preview (Reasoning) GPQA Diamond69.8%
Artificial AnalysisGemini 2.5 Flash Preview (Reasoning) HLE12.1%
Artificial AnalysisGemini 2.5 Flash Preview (Reasoning) LiveCodeBench50.5%
Artificial AnalysisGemini 2.5 Flash Preview (Reasoning) MMLU-Pro80.0%
Artificial AnalysisGemini 2.5 Flash Preview (Reasoning) AIME84.3%
Artificial AnalysisGemini 2.5 Flash Preview (Reasoning) MATH-50098.1%
Design ArenaGemini 2.5 Flash Preview 09-2025 Models Arena 3D Elo1068
Design ArenaGemini 2.5 Flash Preview 09-2025 Models Arena Code Categories Elo1102
Design ArenaGemini 2.5 Flash Preview 09-2025 Models Arena Data Visualization Elo1134
Design ArenaGemini 2.5 Flash Preview 09-2025 Models Arena Game Development Elo1064
Design ArenaGemini 2.5 Flash Preview 09-2025 Models Arena SVG Elo1016
Design ArenaGemini 2.5 Flash Preview 09-2025 Models Arena UI Component Elo1087
Design ArenaGemini 2.5 Flash Preview 09-2025 Models Arena Website Elo1113
Vals AIGemini 2.5 Flash (7/17) (Nonthinking) IOI v12.6%
Vals AIGemini 2.5 Flash (7/17) (Nonthinking) MedCode38.4%
Vals AIGemini 2.5 Flash (7/17) (Nonthinking) MedScribe82.9%
Vals AIGemini 2.5 Flash (7/17) (Nonthinking) SAGE44.8%

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

API

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

Not currently available through EU in-region routing. In-region routing docs

Documentation

Guides, cookbooks, blog posts, and tools for building with Google: Gemini 2.5 Flash on OpenRouter.

  • Gemini 2.5 Flash API - Pricing, Quickstart & Provider ComparisonBlog post

Explore more models

AI Models with Vision: Multimodal LLMs for Image UnderstandingCollectionAI Model RankingsRanking
Latency / throughput
$0.30$2.50$0.030$0.100.59s102 tps
100.00%
Not used in Standard routing:Why these endpoints are not used
Flex
$0.15$1.25$0.015$0.051.09s105 tps
99.07%
Priority
$0.54$4.50$0.054$0.180.47s131 tps
97.67%
Throughput
131tok/s

P50, best across providers

Latency
0.47s

P50, best provider

AutoExacto benchmarks
GPQA DiamondTAU-BenchGoogle Vertex (Global)74.9%60.0%Google Vertex73.7%59.3%Google AI Studio77.1%54.7%Google Vertex72.7%58.0%auto-routing72.4%56.0%
Uptime (3d)The model was reachable. Request routed to a provider.
100.00%
Availability (3d)The model returned inference from any provider. Errors and empty responses count against it.
98.66%

Availability over the last 3 days

Last 72 hours
Availability 98.66%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
97.81%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

1.
Favicon for https://i.love.koalas.ai/
KoalaBear
new
56.3Btokens
2.
Favicon for https://nousresearch.com
Hermes Agent
Hermes Agent is an open-source, self-improving AI agent by Nous Research that runs persistently with memory across sessions, and builds reusable skills from experience. It comes with 40+ built-in tools, including web search, browser automation, and vision, plus scheduled automations and subagents.
30.9Btokens
3.
Favicon for https://docs-api.payready.com/
payready-document-extraction
new
29.4Btokens
4.
Favicon for https://openclaw.ai/
OpenClaw
OpenClaw is an open-source AI agent that connects to your messaging apps and takes real actions on your behalf, from running commands and browsing the web to managing files and sending emails.
26.1Btokens
5.
Favicon for https://factflow.ai/
Factflow
new
19.6Btokens

Frequently asked questions

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.

The Gemini 2.5 Flash documentation on OpenRouter includes the Gemini 2.5 Flash API - Pricing, Quickstart & Provider Comparison blog post. The quickstart covers API keys and your first request, and the API reference lists every parameter.

Gemini 2.5 Flash costs $0.30/M input tokens and $2.50/M output tokens, with separate rates for Cache Read at $0.03/M tokens, Cache Write at $0.08333/M tokens, Image Input at $0.30/M tokens, Input Audio at $1.00/M tokens, and Input Audio Cache at $0.10/M tokens.

Gemini 2.5 Flash has a 1,048,576 token context window. It supports up to 65,535 completion tokens.

Yes. Gemini 2.5 Flash accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

Gemini 2.5 Flash accepts files such as PDFs, images, text, audio, and video as input and returns text.

Gemini 4 Argon, Nano Banana 2.1, Gemini 3.8 Flash and 26 more are other text models from Google.

Gemini 2.5 Flash was released on June 17, 2025. Its knowledge cutoff is January 31, 2025.