Gemini 3.1 Pro Preview vs Llama 4 Maverick 17B Instruct FP8

Gemini 3.1 Pro Preview (2026) and Llama 4 Maverick 17B Instruct FP8 (2025) are general-purpose language models from Google DeepMind and AI at Meta. Both ship a 1m-token context window. On MMLU PRO, Gemini 3.1 Pro Preview leads by 10.5 pts. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

Gemini 3.1 Pro Preview is safer overall; choose Llama 4 Maverick 17B Instruct FP8 when vision-heavy evaluation matters.

Decision scorecard

Local evidence first
SignalGemini 3.1 Pro PreviewLlama 4 Maverick 17B Instruct FP8
Best formultimodal apps, tool-calling agents, and long-context analysismultimodal apps, long-context analysis, and provider-routed production
Decision fitCoding, RAG, and AgentsCoding, RAG, and Agents
Context window1m1m
Cheapest output$12/1M tokens$0.60/1M tokens
Provider routes5 tracked11 tracked
Shared benchmarksMMLU PRO leader7 shared

Decision tradeoffs

Choose Gemini 3.1 Pro Preview when...
  • Gemini 3.1 Pro Preview holds a shared-benchmark lead on MMLU PRO, ahead by 10.5 points.
  • Gemini 3.1 Pro Preview uniquely exposes JSON / Tool use and Code execution in local model data.
  • Local decision data tags Gemini 3.1 Pro Preview for Coding, RAG, and Agents.
Choose Llama 4 Maverick 17B Instruct FP8 when...
  • Llama 4 Maverick 17B Instruct FP8 has the lower cheapest tracked output price at $0.60/1M tokens.
  • Llama 4 Maverick 17B Instruct FP8 has broader tracked provider coverage for fallback and route flexibility.
  • Local decision data tags Llama 4 Maverick 17B Instruct FP8 for Coding, RAG, and Agents.

Monthly cost at traffic

Estimate token spend from the cheapest tracked input and output route or tier on this page.

Lower estimate Llama 4 Maverick 17B Instruct FP8

Gemini 3.1 Pro Preview

$4,600

Cheapest tracked route/tier: Google AI Studio

Llama 4 Maverick 17B Instruct FP8

$270

Cheapest tracked route/tier: OpenRouter

Estimated monthly gap: $4,330. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Gemini 3.1 Pro Preview -> Llama 4 Maverick 17B Instruct FP8
  • Provider overlap exists on OpenRouter, GCP Vertex AI, and Vercel AI Gateway; start route-level A/B tests there.
  • Llama 4 Maverick 17B Instruct FP8 is $11.40/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
  • Check replacement coverage for JSON / Tool use and Code execution before moving production traffic.
Llama 4 Maverick 17B Instruct FP8 -> Gemini 3.1 Pro Preview
  • Provider overlap exists on GCP Vertex AI, OpenRouter, and Vercel AI Gateway; start route-level A/B tests there.
  • Gemini 3.1 Pro Preview is $11.40/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
  • Gemini 3.1 Pro Preview adds JSON / Tool use and Code execution in local capability data.

Specs

Specification
Released2026-02-192025-04-05
Context window1m1m
Parameters—400B (17B active)
ArchitectureDecoder OnlyMixture of Experts
LicenseProprietaryLlama 4 Community
OpennessProprietaryOpen weights
WeightsNot releasedUnknown
CodeUnknownUnknown
Commercial useCommercial use: conditionalCommercial use: conditional
Knowledge cutoff2025-012024-08

Pricing and availability

Pricing attributeGemini 3.1 Pro PreviewLlama 4 Maverick 17B Instruct FP8
Input price
0-200,001t
$2/1M tokens
200,001t+
$4/1M tokens
$0.15/1M tokens
Output price
0-200,001t
$12/1M tokens
200,001t+
$18/1M tokens
$0.60/1M tokens
Providers
Google AI StudioGCP Vertex AIOpenRouterReplicate APIVercel AI Gateway
Microsoft FoundryTogether AIOpenRouterFireworks AIDeepInfraGCP Vertex AI

Capabilities

CapabilityGemini 3.1 Pro PreviewLlama 4 Maverick 17B Instruct FP8
VisionYesYes
MultimodalYesYes
ReasoningNoNo
JSON / Tool useYesNo
Structured outputsYesYes
Code executionYesNo
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

BenchmarkGemini 3.1 Pro PreviewLlama 4 Maverick 17B Instruct FP8
MMLU PRO91.080.5
Google-Proof Q&A94.367.1
LiveCodeBench91.743.4
HumanEval94.077.4
Chatbot Arena1493.01365.0
MMMU Pro88.259.6
τ-bench76.568.5

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Last reviewed: 2026-07-09. Data sourced from public model cards and provider documentation.