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Gemini 3 Flash vs Llama 4 405B

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 · Llama 4 405B specs
Verdict by category
  • PriceTie

    Neither model publishes per-token API pricing.

  • Context windowGemini 3 Flash

    Gemini 3 Flash accepts 1.0M tokens vs 256K, 4.1× the room for long documents and codebases.

  • BenchmarksTie

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

  • ModalitiesGemini 3 Flash

    Gemini 3 Flash supports 4 modalities (text, vision, audio, video) vs 2 for Llama 4 405B.

  • OpennessLlama 4 405B

    Llama 4 405B ships open weights (Llama 4 Community License); Gemini 3 Flash is API-only.

On balance Gemini 3 Flash edges ahead, winning 2 of 5 categories against Llama 4 405B's 1. Neither model publishes per-token API pricing. Gemini 3 Flash accepts 1.0M tokens vs 256K, 4.1× the room for long documents and codebases.

No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. They differ in modality coverage, Gemini 3 Flash handles text, vision, audio, video while Llama 4 405B handles text, vision, which can be the deciding factor before you even look at benchmarks. Llama 4 405B ships open weights (Llama 4 Community License); Gemini 3 Flash is API-only.

Gemini 3 Flash is the newer of the two, released 8 months after Llama 4 405B, which usually means a more recent knowledge cutoff and updated safety post-training. Gemini 3 Flash is usually picked for rag and summarization workloads, while Llama 4 405B sees more deployments in open source llm and fine tuning. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.

Side-by-side specs

SpecGemini 3 FlashLlama 4 405B
ProviderGoogleMeta
ReleasedDec 2025Apr 2025
Modalitiestext, vision, audio, videotext, vision
Context window1.0M tokens256K tokens
Max output65.5K tokens,
Input · 1MPricing not publishedPricing not published
Output · 1MPricing not publishedPricing not published
Knowledge cutoff2025-012024-12
Open weightsNoYes (Llama 4 Community License)
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
  • Llama 4 405BPricing unavailable

Benchmarks compared

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

Benchmark scores not yet available. We only publish numbers we can source from official model cards or independent leaderboards, see methodology.
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
  • Long-context tasks, handles 1.0M tokens vs 256K for Llama 4 405B.
  • Multimodal needs covering audio, video.
Pick Llama 4 405B if

Llama 4 405B fits when…

  • Strongest open-weight model at launch
  • Multimodal (text + vision)
  • Wide hosting availability
  • Self-hosting and on-prem requirements, open weights (Llama 4 Community License).
Don't want either?

Consider Gemini 3 Pro

Google's late-2025 flagship, set new benchmarks on long-context, vision, and reasoning at competitive pricing.

See Gemini 3 Pro specsGemini 3 Flash vs Gemini 3 ProLlama 4 405B vs Gemini 3 Pro

Frequently asked

  • Is Gemini 3 Flash or Llama 4 405B 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?
    Gemini 3 Flash accepts 1.0M tokens vs 256K for Llama 4 405B.
  • Is Gemini 3 Flash or Llama 4 405B better for coding?
    Both Gemini 3 Flash and Llama 4 405B 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?
    Llama 4 405B ships open weights (Llama 4 Community License). Gemini 3 Flash is API-only.
  • When were Gemini 3 Flash and Llama 4 405B released?
    Gemini 3 Flash was released by Google on 2025-12-09. Llama 4 405B was released by Meta on 2025-04-05.
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