Grok 3 vs Inflection 3 Pi
Compare Grok 3 and Inflection 3 Pi: 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 | Grok 3 | Inflection 3 Pi |
|---|---|---|
| Category | Frontier | Compact |
| Parameters | ~800B | ~40B |
| Context Window | 128K | 128K |
| Input Price | $0.10/1M tokens | $0.02/1M tokens |
| Output Price | $0.25/1M tokens | $0.04/1M tokens |
| Latency | ~500ms | ~150ms |
Choose Grok 3 when:
- ✓ Transit predictions
- ✓ Creative interpretations
- ✓ Research
Strong reasoning, Real-time knowledge, Creative output
Choose Inflection 3 Pi when:
- ✓ Personal assistants
- ✓ Chat companions
- ✓ Support bots
Conversational, Empathetic, Fast
Verdict: Grok 3 vs Inflection 3 Pi
For cost efficiency, Inflection 3 Pi wins at $0.02/1M input tokens. For speed, Inflection 3 Pi is faster at ~150ms. Grok 3 excels at Transit predictions while Inflection 3 Pi is better for Personal assistants. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.
Detailed Analysis
Pricing Comparison
Grok 3 costs $0.10/1M input tokens and $0.25/1M output tokens. Inflection 3 Pi costs $0.02 input and $0.04 output. Inflection 3 Pi is 5.0x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Grok 3 has a 128K context window with ~500ms latency. Inflection 3 Pi offers 128K context at ~150ms. Both have identical context windows.
Best For
Grok 3 (Frontier) is optimized for: Transit predictions, Creative interpretations, Research. Inflection 3 Pi (Compact) works best for: Personal assistants, Chat companions, Support bots.
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 Grok 3
response_a = client.chat.completions.create(
model="grok-3",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use Inflection 3 Pi
response_b = client.chat.completions.create(
model="inflection-3-pi",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Grok 3 or Inflection 3 Pi?
Grok 3 (Frontier, ~800B) offers Strong reasoning. Inflection 3 Pi (Compact, ~40B) offers Conversational. Choose Grok 3 for Transit predictions or Inflection 3 Pi for Personal assistants.
How much does Grok 3 cost vs Inflection 3 Pi?
Grok 3: $0.10/1M input, $0.25/1M output. Inflection 3 Pi: $0.02/1M input, $0.04/1M 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 Grok 3 and Inflection 3 Pi by changing the model parameter. No code changes needed.
Related Comparisons
Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.