Grok 4.1 Fast vs Llama 4 Maverick 17B Instruct FP8

Name: Grok 4.1 Fast
Author: xAI

Grok 4.1 Fast (2025) and Llama 4 Maverick 17B Instruct FP8 (2025) are frontier reasoning models from xAI and AI at Meta. Grok 4.1 Fast ships a 2m-token context window, while Llama 4 Maverick 17B Instruct FP8 ships a 1m-token context window. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

Grok 4.1 Fast is safer overall; choose Llama 4 Maverick 17B Instruct FP8 when vision-heavy evaluation matters.

Decision scorecard

Local evidence first

Signal	Grok 4.1 Fast	Llama 4 Maverick 17B Instruct FP8	How to read it
Best for	reasoning-heavy apps, multimodal apps, and tool-calling agents	multimodal apps, long-context analysis, and provider-routed production	Use-case synthesis from product type, capability flags, context, and provider data.
Decision fit	RAG, Agents, and Long context	Coding, RAG, and Agents	Primary workload tags from local decision data.
Context window	2m	1m	Higher is better when prompts, retrieval chunks, or transcripts are large.
Cheapest output	$0.50/1M tokens	$0.60/1M tokens	Cheapest tracked provider route; verify your exact region and tier.
Provider routes	2 tracked	10 tracked	Broader coverage can reduce vendor lock-in and fallback risk.
Shared benchmarks	0 rows	0 rows	No shared benchmark rows are sourced for this pair yet.

Decision tradeoffs

Choose Grok 4.1 Fast when...

Grok 4.1 Fast has the larger context window for long prompts, retrieval packs, or transcript analysis.
Grok 4.1 Fast has the lower cheapest tracked output price at $0.50/1M tokens.
Grok 4.1 Fast uniquely exposes Reasoning, Function calling, and Tool use in local model data.
Local decision data tags Grok 4.1 Fast for RAG, Agents, and Long context.

Choose Llama 4 Maverick 17B Instruct FP8 when...

Llama 4 Maverick 17B Instruct FP8 has broader tracked provider coverage for fallback and procurement 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

Requests / monthInput tokens / requestOutput tokens / request

Grok 4.1 Fast

$285

Cheapest tracked route/tier: OpenRouter

Llama 4 Maverick 17B Instruct FP8

$270

Cheapest tracked route/tier: OpenRouter

Estimated monthly gap: $15.00. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Grok 4.1 Fast -> Llama 4 Maverick 17B Instruct FP8

Provider overlap exists on OpenRouter; start route-level A/B tests there.
Llama 4 Maverick 17B Instruct FP8 is $0.10/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
Check replacement coverage for Reasoning, Function calling, and Tool use before moving production traffic.

Llama 4 Maverick 17B Instruct FP8 -> Grok 4.1 Fast

Provider overlap exists on OpenRouter; start route-level A/B tests there.
Grok 4.1 Fast is $0.10/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
Grok 4.1 Fast adds Reasoning, Function calling, and Tool use in local capability data.

Specs

Specification	Grok 4.1 Fast xAI	Llama 4 Maverick 17B Instruct FP8 AI at Meta
Released	2025-11-19	2025-04-05
Context window	2m	1m
Parameters	—	400B (17B active)
Architecture	-	mixture of experts
License	Proprietary	Llama 4 Community
Openness	Proprietary	Open weights
Commercial use	Commercial use with conditions	Commercial use with conditions
Knowledge cutoff	-	2024-08

Pricing and availability

Pricing attribute	Grok 4.1 Fast	Llama 4 Maverick 17B Instruct FP8
Input price	$0.20/1M tokens	$0.15/1M tokens
Output price	$0.50/1M tokens	$0.60/1M tokens
Providers	OpenRouter xAI Console	Microsoft Foundry Together AI OpenRouter Fireworks AI DeepInfra GCP Vertex AI

Capabilities

Capability	Grok 4.1 Fast	Llama 4 Maverick 17B Instruct FP8
Vision	Yes	Yes
Multimodal	Yes	Yes
Reasoning	Yes	No
Function calling	Yes	No
Tool use	Yes	No
Structured outputs	Yes	Yes
Code execution	No	No
IDE integration	No	No
Computer use	No	No
Parallel agents	No	No

Benchmarks

No shared benchmark rows are currently sourced for this pair.

Deep dive

The capability footprint differs most on reasoning mode: Grok 4.1 Fast, function calling: Grok 4.1 Fast, and tool use: Grok 4.1 Fast. Both models share vision, multimodal input, and structured outputs, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.

For cost, Grok 4.1 Fast lists $0.20/1M input and $0.50/1M output tokens on the cheapest tracked provider, while Llama 4 Maverick 17B Instruct FP8 lists $0.15/1M input and $0.60/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Llama 4 Maverick 17B Instruct FP8 lower by about $0.01 per million blended tokens. Availability is 2 providers versus 10, so concentration risk also matters.

Choose Grok 4.1 Fast when reasoning depth and larger context windows are central to the workload. Choose Llama 4 Maverick 17B Instruct FP8 when vision-heavy evaluation, lower input-token cost, and broader provider choice are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.

FAQ

Which has a larger context window, Grok 4.1 Fast or Llama 4 Maverick 17B Instruct FP8?

Grok 4.1 Fast supports 2m tokens, while Llama 4 Maverick 17B Instruct FP8 supports 1m tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.

Which is cheaper, Grok 4.1 Fast or Llama 4 Maverick 17B Instruct FP8?

Llama 4 Maverick 17B Instruct FP8 is cheaper on tracked token pricing. Grok 4.1 Fast costs $0.20/1M input and $0.50/1M output tokens. Llama 4 Maverick 17B Instruct FP8 costs $0.15/1M input and $0.60/1M output tokens. Provider discounts or batch pricing can still change the final bill.

Is Grok 4.1 Fast or Llama 4 Maverick 17B Instruct FP8 open source?

Grok 4.1 Fast is listed under Proprietary. Llama 4 Maverick 17B Instruct FP8 is listed under Llama 4 Community. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.

Which is better for vision, Grok 4.1 Fast or Llama 4 Maverick 17B Instruct FP8?

Both Grok 4.1 Fast and Llama 4 Maverick 17B Instruct FP8 expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.

Which is better for multimodal input, Grok 4.1 Fast or Llama 4 Maverick 17B Instruct FP8?

Both Grok 4.1 Fast and Llama 4 Maverick 17B Instruct FP8 expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.

Where can I run Grok 4.1 Fast and Llama 4 Maverick 17B Instruct FP8?

Grok 4.1 Fast is available on OpenRouter and xAI Console. Llama 4 Maverick 17B Instruct FP8 is available on Microsoft Foundry, Together AI, OpenRouter, Fireworks AI, and DeepInfra. Provider coverage can affect latency, region availability, compliance posture, and fallback options.

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Last reviewed: 2026-06-07. Data sourced from public model cards and provider documentation.

Both models

Grok 4.1 Fast Llama 4 Maverick 17B Instruct FP8