Grok 4.1 Fast vs Grok Code Fast 1
Grok 4.1 Fast vs Grok Code Fast 1: Grok 4.1 Fast is cheaper for input-heavy usage ($0.20/M vs $0.20/M input tokens), while Grok 4.1 Fast is better for long-context tasks (2,000,000 tokens).
Direct answer: choose Grok 4.1 Fast for lower token spend and choose Grok 4.1 Fast when your workload needs longer context.
Compare input and output token pricing, context windows, and monthly cost estimates on one page so you can pick the cheaper model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Grok 4.1 Fast
Grok Code Fast 1
Cost Differences
Grok Code Fast 1 costs more than Grok 4.1 Fast
Quick Recommendation
Winner for direct API pricing: Grok 4.1 Fast. At the default workload, Grok 4.1 Fast saves about $1.50/month ($18.25/year) versus Grok Code Fast 1.
Feature Comparison
| Feature | Grok 4.1 Fast | Grok Code Fast 1 |
|---|---|---|
| Provider | xAI | xAI |
| Input Price | $0.20/1M tokens | $0.20/1M tokens |
| Output Price | $0.50/1M tokens | $1.50/1M tokens |
| Context Window | 2,000,000 tokens | 256,000 tokens |
| Max Output | 131,072 tokens | 32,768 tokens |
| Category | efficient | standard |
| Capabilities | textreasoningcode | textcodereasoning |
| Release Date | 1/15/2026 | 2/1/2026 |
Grok 4.1 Fast vs Grok Code Fast 1: Which Should You Choose?
Choosing between Grok 4.1 Fast and Grok Code Fast 1 depends on your priorities: cost efficiency, context length, or raw capability. Grok 4.1 Fast is the more affordable option at $0.20/1M input tokens. Meanwhile, Grok 4.1 Fast offers a significantly larger context window at 2,000,000 tokens vs 256,000 for Grok Code Fast 1.
These models target different tiers: Grok 4.1 Fast is a efficient model while Grok Code Fast 1 is standard. This means they're optimized for different workloads. Grok Code Fast 1 targets more demanding workloads, while Grok 4.1 Fast provides a cost-effective option for everyday tasks.
Output costs matter too. Grok 4.1 Fast charges $0.50/1M output tokens vs $1.50 for Grok Code Fast 1. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Grok 4.1 Fast has the edge here at $0.50/1M output tokens.
Best Use Cases
Choose Grok 4.1 Fast when:
- • You need a larger context window (2,000,000 tokens)
- • You need longer outputs (up to 131,072 tokens)
- • You're already using xAI's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Choose Grok Code Fast 1 when:
- • You're already using xAI's API ecosystem
Pros and Caveats at a Glance
Grok 4.1 Fast
- • Input pricing: $0.20/M tokens
- • Output pricing: $0.50/M tokens
- • Context window: 2,000,000 tokens
- • Max output: 131,072 tokens
Watch out for
- • Trade-offs are minor in this matchup.
Grok Code Fast 1
- • Input pricing: $0.20/M tokens
- • Output pricing: $1.50/M tokens
- • Context window: 256,000 tokens
- • Max output: 32,768 tokens
Watch out for
- • Higher output cost than Grok 4.1 Fast
- • Smaller context window than Grok 4.1 Fast
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Grok 4.1 Fast (xAI)
Grok Code Fast 1 (xAI)
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Sign Up for xAI →Frequently Asked Questions
Which is cheaper, Grok 4.1 Fast or Grok Code Fast 1?▼
What is the context window difference between Grok 4.1 Fast and Grok Code Fast 1?▼
Which model is better for AI Agent / Agentic Workflows?▼
Which model has better overall pricing for heavy usage?▼
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