Grok 4.20 vs Grok 4.3
Pricing verdict: Grok 4.20 vs Grok 4.3: pricing is a tie at $1.25/M input and $2.50/M output. The real choice is context: Grok 4.20 is better for long-context tasks (2,000,000 tokens vs 1,000,000).
Direct answer: pricing is a tie. Choose Grok 4.20 for the larger 2M context window, or pick Grok 4.3 if 1M is already enough for your workload.
Compare API pricing, input and output token costs, context windows, and monthly estimates on one page so you can pick the right model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Grok 4.20
Grok 4.3
Cost Differences
Both models cost the same at the default workload.
Quick Recommendation
Direct API pricing is a tie at the default workload: both land around $7.50/month. Pick Grok 4.20 if you need the larger 2M context window; otherwise choose the model that better fits your workflow.
Feature Comparison
| Feature | Grok 4.20 | Grok 4.3 |
|---|---|---|
| Provider | xAI | xAI |
| Input Price | $1.25/1M tokens | $1.25/1M tokens |
| Output Price | $2.50/1M tokens | $2.50/1M tokens |
| Context Window | 2,000,000 tokens | 1,000,000 tokens |
| Max Output | 131,072 tokens | 131,072 tokens |
| Category | reasoning | reasoning |
| Capabilities | textvisionreasoningcode | textvisionreasoning |
| Release Date | 2/17/2026 | 4/30/2026 |
Grok 4.20 vs Grok 4.3: Which Should You Choose?
Choosing between Grok 4.20 and Grok 4.3 depends on your priorities: cost efficiency, context length, or raw capability. Both models cost the same on input and output tokens, so raw price is a tie. Meanwhile, Grok 4.20 offers a significantly larger context window at 2,000,000 tokens vs 1,000,000 for Grok 4.3.
Both models are in the reasoning category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — direct API pricing stays tied, so the real decision is context, latency, and provider fit.
Output costs matter too. Grok 4.20 charges $2.50/1M output tokens vs $2.50 for Grok 4.3.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose Grok 4.20 when:
- • You need a larger context window (2,000,000 tokens)
- • You need more capabilities (code)
- • You're already using xAI's API ecosystem
Choose Grok 4.3 when:
- • You're already using xAI's API ecosystem
Pros and Caveats at a Glance
Grok 4.20
- • Input pricing: $1.25/M tokens
- • Output pricing: $2.50/M tokens
- • Context window: 2,000,000 tokens
- • Max output: 131,072 tokens
Watch out for
- • Trade-offs are minor in this matchup.
Grok 4.3
- • Input pricing: $1.25/M tokens
- • Output pricing: $2.50/M tokens
- • Context window: 1,000,000 tokens
- • Max output: 131,072 tokens
Watch out for
- • Smaller context window than Grok 4.20
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Grok 4.20 (xAI)
Grok 4.3 (xAI)
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Which is cheaper, Grok 4.20 or Grok 4.3?▼
What is the context window difference between Grok 4.20 and Grok 4.3?▼
Which model is better for AI Chatbot?▼
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