Gemini 2.5 Pro vs Grok 3 Mini

Name: Gemini 2.5 Pro
Author: Google DeepMind

Gemini 2.5 Pro (2025) and Grok 3 Mini (2025) are frontier reasoning models from Google DeepMind and xAI. Gemini 2.5 Pro ships a 1m-token context window, while Grok 3 Mini ships a 131k-token context window. On pricing, Gemini 2.5 Pro ranges from $1.25 to $2.50/1M input tokens by tier; Grok 3 Mini costs $0.25/1M input tokens. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

Gemini 2.5 Pro fits 8x more tokens; pick it for long-context work and Grok 3 Mini for tighter calls.

Decision scorecard

Local evidence first

Signal	Gemini 2.5 Pro	Grok 3 Mini	How to read it
Best for	reasoning-heavy apps, multimodal apps, and tool-calling agents	multimodal apps and provider-routed production	Use-case synthesis from product type, capability flags, context, and provider data.
Decision fit	Coding, RAG, and Agents	RAG, Long context, and Vision	Primary workload tags from local decision data.
Context window	1m	131k	Higher is better when prompts, retrieval chunks, or transcripts are large.
Cheapest output	$10/1M tokens	$1.27/1M tokens	Cheapest tracked provider route; verify your exact region and tier.
Provider routes	4 tracked	2 tracked	Broader coverage can reduce vendor lock-in and fallback risk.
Shared benchmarks	0 shared	0 shared	No shared benchmark scores are available for this pair yet.

Decision tradeoffs

Choose Gemini 2.5 Pro when...

Gemini 2.5 Pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
Gemini 2.5 Pro has broader tracked provider coverage for fallback and route flexibility.
Gemini 2.5 Pro uniquely exposes Reasoning, JSON / Tool use, and Code execution in local model data.
Local decision data tags Gemini 2.5 Pro for Coding, RAG, and Agents.

Choose Grok 3 Mini when...

Grok 3 Mini has the lower cheapest tracked output price at $1.27/1M tokens.
Local decision data tags Grok 3 Mini for RAG, Long context, and Vision.

Monthly cost at traffic

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

Lower estimate Grok 3 Mini

Requests / monthInput tokens / requestOutput tokens / request

Gemini 2.5 Pro

$3,500

Cheapest tracked route/tier: Google AI Studio <=200K tokens

Grok 3 Mini

$518

Cheapest tracked route/tier: Microsoft Foundry

Estimated monthly gap: $2,983. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Gemini 2.5 Pro -> Grok 3 Mini

Provider overlap exists on OpenRouter; start route-level A/B tests there.
Grok 3 Mini is $8.73/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
Check replacement coverage for Reasoning, JSON / Tool use, and Code execution before moving production traffic.

Grok 3 Mini -> Gemini 2.5 Pro

Provider overlap exists on OpenRouter; start route-level A/B tests there.
Gemini 2.5 Pro is $8.73/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
Gemini 2.5 Pro adds Reasoning, JSON / Tool use, and Code execution in local capability data.

Specs

Specification	Gemini 2.5 Pro Google DeepMind	Grok 3 Mini xAI
Released	2025-06-17	2025-02-17
Context window	1m	131k
Parameters	—	—
Architecture	Decoder Only	-
License	Proprietary	Proprietary
Openness	Proprietary	Proprietary
Weights	Not released	Not released
Code	Unknown	Unknown
Commercial use	Commercial use: conditional	Commercial use: conditional
Knowledge cutoff	2025-01	2024-11

Pricing and availability

Pricing attribute	Gemini 2.5 Pro	Grok 3 Mini
Input price	<=200K tokens $1.25/1M tokens Standard Gemini 2.5 Pro pricing for prompts up to 200K tokens. >200K tokens $2.50/1M tokens Higher Gemini 2.5 Pro tier for prompts above 200K tokens.	$0.25/1M tokens
Output price	<=200K tokens $10/1M tokens Standard Gemini 2.5 Pro pricing for prompts up to 200K tokens. >200K tokens $15/1M tokens Higher Gemini 2.5 Pro tier for prompts above 200K tokens.	$1.27/1M tokens
Providers	Google AI Studio GCP Vertex AI OpenRouter Vercel AI Gateway	OpenRouter Microsoft Foundry

Capabilities

Capability	Gemini 2.5 Pro	Grok 3 Mini
Vision	Yes	Yes
Multimodal	Yes	Yes
Reasoning	Yes	No
JSON / Tool use	Yes	No
Structured outputs	Yes	Yes
Code execution	Yes	No
IDE integration	No	No
Computer use	No	No
Parallel agents	No	No

Benchmarks

No shared benchmark scores are currently available for this pair.

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Model pages

Labs and families

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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.

Both models

Gemini 2.5 Pro Grok 3 Mini