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Gemini 3 Flash vs Gemini 3 Pro

A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.

Updated

Gemini 3 Flash specs · Gemini 3 Pro specs
Verdict by category
  • PriceTie

    Neither model publishes per-token API pricing.

  • Context windowTie

    Both ship a 1.0M-token context window.

  • BenchmarksTie

    No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.

  • ModalitiesTie

    Both handle text, vision, audio, video.

  • OpennessTie

    Both are closed-weight, API-only.

It's a genuine coin-flip between Gemini 3 Flash and Gemini 3 Pro: 0 category wins each, with the rest tied. Neither model publishes per-token API pricing. Both ship a 1.0M-token context window.

No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. Both target the same set of modalities (text, vision, audio, video), so the deciding factors are price, context, and raw quality. Both are closed-weight, API-only.

Both shipped within roughly a month of each other in 2025, so they share the same generation of training data and tooling. Gemini 3 Flash is usually picked for rag and summarization workloads, while Gemini 3 Pro sees more deployments in long context and rag. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.

Side-by-side specs

SpecGemini 3 FlashGemini 3 Pro
ProviderGoogleGoogle
ReleasedDec 2025Dec 2025
Modalitiestext, vision, audio, videotext, vision, audio, video
Context window1.0M tokens1.0M tokens
Max output65.5K tokens65.5K tokens
Input · 1MPricing not publishedPricing not published
Output · 1MPricing not publishedPricing not published
Knowledge cutoff2025-012025-01
Open weightsNoNo
API availableYesYes

Pricing at scale

What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.

  • Light usage, 100k in / 50k out per day, vs ,
  • Heavy usage, 1M in / 500k out per day, vs ,
  • RAG workload, 5M in / 200k out per day, vs ,

Light usage, 100k in / 50k out per day: pricing not directly comparable (one or both models are missing public per-token rates). Heavy usage, 1M in / 500k out per day: pricing not directly comparable (one or both models are missing public per-token rates). RAG workload, 5M in / 200k out per day: pricing not directly comparable (one or both models are missing public per-token rates).

Price calculator

Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.

  • Gemini 3 FlashPricing unavailable
  • Gemini 3 ProPricing unavailable

Benchmarks compared

Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.

Gemini 3 FlashGemini 3 Pro
  • MMLU,91.8
  • HumanEval,95.4
  • GPQA,91.9
Pick Gemini 3 Flash if

Gemini 3 Flash fits when…

  • 1M-token context at mid-tier price
  • Very fast, good for interactive UX
  • Strong vision support
Pick Gemini 3 Pro if

Gemini 3 Pro fits when…

  • Massive 1M-token context window
  • State-of-the-art vision and document understanding
  • Strong reasoning at competitive price
Don't want either?

Consider Gemini 2.5 Pro

Google's mid-2025 flagship, the model that brought Gemini decisively back to parity with the OpenAI and Anthropic frontier.

See Gemini 2.5 Pro specsGemini 3 Flash vs Gemini 2.5 ProGemini 3 Pro vs Gemini 2.5 Pro

Frequently asked

  • Is Gemini 3 Flash or Gemini 3 Pro cheaper?
    Per-token pricing isn't published for at least one of these models, check each model's spec page for current rates.
  • Which has the larger context window?
    Both Gemini 3 Flash and Gemini 3 Pro ship a 1.0M-token context window.
  • Is Gemini 3 Flash or Gemini 3 Pro better for coding?
    Both Gemini 3 Flash and Gemini 3 Pro are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.
  • Are either of these models open source?
    Neither model ships open weights, both are accessible only via their respective providers' APIs.
  • When were Gemini 3 Flash and Gemini 3 Pro released?
    Gemini 3 Flash was released by Google on 2025-12-09. Gemini 3 Pro was released by Google on 2025-12-09.
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