o3 vs Grok 3 Mini
Compare o3 and Grok 3 Mini: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.
Updated 2026-05-21 · By Abhishek Raj · Our methodology
| Feature | o3 | Grok 3 Mini |
|---|---|---|
| Category | Reasoning | Compact |
| Parameters | ~1T | ~70B |
| Context Window | 200K | 128K |
| Input Price | $0.10/1M tokens | $0.03/1M tokens |
| Output Price | $0.40/1M tokens | $0.08/1M tokens |
| Latency | ~2000ms | ~200ms |
Choose o3 when:
- ✓ Complex calculations
- ✓ Multi-factor analysis
- ✓ Research-grade work
Extended thinking, Complex logic, Mathematical reasoning
Choose Grok 3 Mini when:
- ✓ Fast queries
- ✓ Temple chatbots
- ✓ General Q&A
Cost-efficient, Good reasoning, Fast
Verdict: o3 vs Grok 3 Mini
For cost efficiency, Grok 3 Mini wins at $0.03/1M input tokens. For speed, o3 is faster at ~2000ms. o3 excels at Complex calculations while Grok 3 Mini is better for Fast queries. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.
Detailed Analysis
Pricing Comparison
o3 costs $0.10/1M input tokens and $0.40/1M output tokens. Grok 3 Mini costs $0.03 input and $0.08 output. Grok 3 Mini is 3.3x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
o3 has a 200K context window with ~2000ms latency. Grok 3 Mini offers 128K context at ~200ms. o3 has the larger context window.
Best For
o3 (Reasoning) is optimized for: Complex calculations, Multi-factor analysis, Research-grade work. Grok 3 Mini (Compact) works best for: Fast queries, Temple chatbots, General Q&A.
Try Both on XALEN
Both models are available through XALEN's OpenAI-compatible API. Switch between them by changing the model parameter:
from xalen import XALEN
client = XALEN(api_key="xln_test_YOUR_KEY")
# Use o3
response_a = client.chat.completions.create(
model="o3",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use Grok 3 Mini
response_b = client.chat.completions.create(
model="grok-3-mini",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, o3 or Grok 3 Mini?
o3 (Reasoning, ~1T) offers Extended thinking. Grok 3 Mini (Compact, ~70B) offers Cost-efficient. Choose o3 for Complex calculations or Grok 3 Mini for Fast queries.
How much does o3 cost vs Grok 3 Mini?
o3: $0.10/1M input, $0.40/1M output. Grok 3 Mini: $0.03/1M input, $0.08/1M output. Both available on XALEN with batch processing at 50% discount.
Can I use both models on XALEN?
Yes. XALEN provides 200+ models through a single OpenAI-compatible API. Switch between o3 and Grok 3 Mini by changing the model parameter. No code changes needed.
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Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.