Grok 4.20 vs o1-mini
Grok 4.20 vs o1-mini: o1-mini is cheaper for input-heavy usage ($1.10/M vs $1.25/M input tokens), while Grok 4.20 is better for long-context tasks (2,000,000 tokens).
Direct answer: choose o1-mini for lower token spend and choose Grok 4.20 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 4.20
o1-mini
Cost Differences
o1-mini costs more than Grok 4.20
Quick Recommendation
Winner for direct API pricing: Grok 4.20. At the default workload, Grok 4.20 saves about $2.40/month ($29.20/year) versus o1-mini.
Feature Comparison
| Feature | Grok 4.20 | o1-mini |
|---|---|---|
| Provider | xAI | OpenAI |
| Input Price | $1.25/1M tokens | $1.10/1M tokens |
| Output Price | $2.50/1M tokens | $4.40/1M tokens |
| Context Window | 2,000,000 tokens | 128,000 tokens |
| Max Output | 131,072 tokens | 65,536 tokens |
| Category | reasoning | reasoning |
| Capabilities | textvisionreasoningcode | textreasoning |
| Release Date | 2/17/2026 | 9/12/2024 |
Grok 4.20 vs o1-mini: Which Should You Choose?
Choosing between Grok 4.20 and o1-mini depends on your priorities: cost efficiency, context length, or raw capability. Grok 4.20 is the more affordable option at $1.25/1M input tokens. Meanwhile, Grok 4.20 offers a significantly larger context window at 2,000,000 tokens vs 128,000 for o1-mini.
These models come from different providers — xAI and OpenAI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with xAI, switching to OpenAIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
Both models are in the reasoning category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: Grok 4.20 would save you roughly $240.00/month compared to o1-mini. For startups and indie developers, that difference can be significant.
Output costs matter too. Grok 4.20 charges $2.50/1M output tokens vs $4.40 for o1-mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Grok 4.20 has the edge here at $2.50/1M output tokens.
Multimodal capabilities: Grok 4.20 supports vision (image inputs) while o1-mini is text-only. If your application needs image understanding, this narrows your choice.
Best Use Cases
Choose Grok 4.20 when:
- • You need a larger context window (2,000,000 tokens)
- • You need more capabilities (vision, code)
- • You need longer outputs (up to 131,072 tokens)
- • You're already using xAI's API ecosystem
Choose o1-mini when:
- • Budget is a primary concern
- • You're already using OpenAI'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
- • Higher input cost than o1-mini
o1-mini
- • Input pricing: $1.10/M tokens
- • Output pricing: $4.40/M tokens
- • Context window: 128,000 tokens
- • Max output: 65,536 tokens
Watch out for
- • Higher output cost than Grok 4.20
- • 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)
o1-mini (OpenAI)
Start using Grok 4.20 today
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Sign Up for OpenAI →Frequently Asked Questions
Which is cheaper, Grok 4.20 or o1-mini?▼
What is the context window difference between Grok 4.20 and o1-mini?▼
Which model is better for AI Chatbot?▼
Which model has better overall pricing for heavy usage?▼
Where can I compare xAI and OpenAI API pricing beyond this model matchup?▼
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