Comprehensive side-by-side LLM comparison
Grok 4.1 Fast offers 1.0M more tokens in context window than Gemini 3 Flash. Gemini 3 Flash is $5.50 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
Google DeepMind
Gemini 3 Flash, released by Google in December 2025, is a large language model from the Gemini 3 family that delivers reasoning and coding performance with efficiency optimized for high-volume workloads. It features a 1M token context window, 64K maximum output tokens, and native support for text, image, audio, video, and PDF input. Gemini 3 Flash targets cost-sensitive agentic workflows, document processing, and production APIs requiring fast, capable multimodal responses.
xAI
Grok 4.1 Fast, released by xAI in November 2025, is a fast-response variant from the Grok 4 family featuring a 2M token context window designed for high-throughput applications. It omits thinking tokens for immediate responses, reducing latency while maintaining strong output quality. Grok 4.1 Fast targets production APIs, real-time assistants, and cost-sensitive applications requiring long-context understanding at high volume.
1 month newer

Grok 4.1 Fast
xAI
2025-11-17

Gemini 3 Flash
Google DeepMind
2025-12-17
Cost per million tokens (USD)
Gemini 3 Flash
Grok 4.1 Fast
Context window and performance specifications
Available providers and their performance metrics
Gemini 3 Flash
Google Cloud Vertex AI
Grok 4.1 Fast
Gemini 3 Flash
Grok 4.1 Fast
Gemini 3 Flash
Grok 4.1 Fast
xAI