Gemini 2.5 Flash Preview (Sep '25)
Sep 2025
Gemini 2.5 Flash Preview (Sep '25)Compare inon
Gemini 2.5 Flash Preview (Sep '25) measured on 3 of 8 Writing & Language benchmarks3
BenchmarkByScoreRank
No benchmark matches
—per task?
not available via APIprice
—output speed?
1Mcontext
Alternatives?
ModelScoreCostPer taskWhat changes
BetterGPT-6 Lunamaxwins 54%—$0.068Function calling only with none · Chat Completions+3
OpenKimi K3maxwins 61%—$2.00Sampling parameters are fixed+3BetterGPT-5.6 Lunaxhighwins 54%—$0.085BetterGPT-5.6 Terraxhighwins 57%—$0.63Prompts with >272K input tokensBetterGPT-6.1 Solmaxwins 61%—$0.72Remove unsupported parameters+5ModelScoreCostPer taskWhat changes
Nothing here yet.
ModelScoreCostPer taskWhat changes
GPT-6 Lunamaxwins 54%—$0.068Function calling only with none · Chat Completions+3GPT-5.6 Lunaxhighwins 54%—$0.085GPT-5.6 Terraxhighwins 57%—$0.63Prompts with >272K input tokensGPT-6.1 Solmaxwins 61%—$0.72Remove unsupported parameters+5
Muse Spark 1.2xhighwins 59%—$0.97Only auto tool_choice is supported+1ModelScoreCostPer taskWhat changes
Kimi K3maxOpenwins 61%—$2.00Sampling parameters are fixed+3
GLM 5.2maxOpenwins 60%—$1.47No image inputGLM 5.3maxOpenwins 60%—$2.01No image input+4GLM 5unstatedOpenwins 60%—$1 / $3.20Context: 1M → 203K+1GLM 5.1unstatedOpenwins 60%—$1.40 / $4.40Context: 1M → 203K+1ModelScoreCostPer taskWhat changes
Gemini 4 Argonhighwins 69%—*$1.99Synchronous output stops at 65,536+2Gemini 3.8 Flashhighwins 65%—*$1.24Sampling parameters are ignored+1Gemini 3.1 Pro Previewunstatedwins 64%—$2 / $12Cannot use both thinking controlsGemini 3.6 Flashhighwins 63%—*$1.60Gemini 3 Flash Previewunstatedwins 61%—$0.50 / $3Gemini 2.5 Prounstatedwins 59%—$1.25 / $10Gemini 3.5 Flash Liteunstatedwins 58%—$0.30 / $2.50Gemma 4 31BunstatedOpenwins 56%—$0.10 / $0.34Context: 1M → 256KAll Google models →History
3 versionsBenchmarks
in Writing & LanguageIFBench (instructions)43.5#137
FAQ
How much does Gemini 2.5 Flash Preview (Sep '25) cost?›
There is no per-unit API price: not available via API.
Is Gemini 2.5 Flash Preview (Sep '25) free to use?›
There is no free API.
How good is Gemini 2.5 Flash Preview (Sep '25), and what is it best at?›
#207 of 334 in Chat & Knowledge, #110 of 239 in Coding, #151 of 242 in Agents & Tool Use, #85 of 195 in Writing & Language, #67 of 124 in Vision & Documents.
Is Gemini 2.5 Flash Preview (Sep '25) better than Inkling?›
On Arena Text · creative writing, Gemini 2.5 Flash Preview (Sep '25) scores 1,380 vs 1,381 — about the same.
What is the context window of Gemini 2.5 Flash Preview (Sep '25)?›
1M tokens.
When was Gemini 2.5 Flash Preview (Sep '25) released? Is there a newer version?›
Released 2025-09-25. It is the current version in its line.
Is Gemini 2.5 Flash Preview (Sep '25) open source?›
No, Gemini 2.5 Flash Preview (Sep '25) is a closed model available through an API. The closest open-weights option here is Kimi K3.
Can Gemini 2.5 Flash Preview (Sep '25) read images?›
It accepts text and images, PDF files, audio, video as input.
What is Gemini 2.5 Flash Preview (Sep '25)?›
Gemini 2.5 Flash Preview (Sep '25) is a closed language model from Google, released Sep 2025.
What are the best alternatives to Gemini 2.5 Flash Preview (Sep '25)?›
GPT-6 Luna (better), Kimi K3 (open weights).