xAI
Grok 4.3
$0.00
per month
Input cost
Output cost
Cost per request
Requests/month
Google
Gemini 3 Flash
Cheaper Choice
$0.00
per month
Input cost
Output cost
Cost per request
Requests/month

Other Models to Consider

GPT-5 mini
OpenAI
$0.25 / $2.00 per 1M
272K context
DeepSeek V4 Pro
DeepSeek
$0.435 / $0.87 per 1M
1M context
Mistral Small 4
Mistral
$0.15 / $0.60 per 1M
128K context

Which Model for Which Use Case?

Cost-Sensitive Production

Gemini 3 Flash at $0.50/$3.00 is 60% cheaper on input than Grok. At 1M requests/day, you'd save $225/mo vs Grok on input alone.

Cheaper: Gemini 3 Flash

Real-Time Social Analysis

Grok 4.3 has real-time access to X/Twitter data, making it ideal for social media monitoring, trend analysis, and real-time sentiment analysis.

Better real-time: Grok 4.3

Google Cloud Integration

Gemini 3 Flash integrates natively with Vertex AI, BigQuery ML, and other GCP services. If you're on Google Cloud, switching means zero additional infrastructure.

Better GCP integration: Gemini 3 Flash

Conversational AI

Grok 4.3 is known for its witty, engaging conversational style. If you're building a chatbot that needs personality, Grok's training gives it an edge.

Better personality: Grok 4.3

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Frequently Asked Questions

Is Gemini 3 Flash cheaper than Grok 4.3?

Yes. Gemini 3 Flash costs $0.50/M input and $3.00/M output — 60% cheaper on input and 20% cheaper on output than Grok 4.3's $1.25/M input and $2.50/M output.

When would I choose Grok 4.3 over Gemini 3 Flash?

Choose Grok 4.3 if you need xAI's real-time knowledge from X/Twitter, prefer Grok's conversational style, or need the 1M context window for long conversations.

Which model has a larger context window?

Both have 1M token context windows — equally capable of handling long documents and complex multi-turn conversations.

Is Gemini 3 Flash worth the savings over Grok 4.3?

At 60% cheaper on input, Gemini 3 Flash offers excellent value for most tasks. Grok 4.3 may be worth the premium for real-time social media analysis or xAI ecosystem features.

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