Grok 4.3 vs Gemini 3 Flash
xAI's mid-tier model against Google's budget offering. Gemini 3 Flash is 60% cheaper on input and 20% cheaper on output — with the same 1M context window.
Pricing data verified: 2026-06-20
| Specification | Grok 4.3 (xAI) | Gemini 3 Flash (Google) |
|---|---|---|
| Input Price (per 1M tokens) | $1.25 | $0.50 |
| Output Price (per 1M tokens) | $2.50 | $3.00 |
| Context Window | 1M | 1M |
| Tier | Mid | Budget |
| Provider | xAI |
Calculate Your Exact Costs
See how the costs stack up for your specific usage pattern.
Other Models to Consider
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.
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.
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.
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.
Comparing xAI vs Google Models?
APIpulse Pro lets you compare all 42 models, find the cheapest option for your exact usage, and save scenarios for your team.
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.