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Claude Opus vs Pi
Compare Claude Opus vs Pi: pricing, context window, benchmarks (coding, math, reasoning), capabilities. Updated April 2026.
Open in compare tool — pick different models →Claude Opus
claude.ai ↗ Pi
pi.ai ↗ Pricing
Free tier
Not available on free tier
Fully free, no paid tier
Standard plan
Max 5× — $100/mo
Free — API only
Top plan
Max 20× — $200/mo
API only — API only
API input / 1M tokens
$15.00
$2.50 Best
API output / 1M tokens
$75.00
$10.00 Best
Capability
Context window
1M Best
32K
Max output tokens
64K Best
4K
Knowledge cutoff
2026-03
2025-08
Benchmarks
Coding (LiveCodeBench)
82% Best
—
Math (AIME 2025)
81% Best
55%
Reasoning (GPQA Diamond)
88% Best
62%
Human pref. (LMArena Elo)
1428 Best
1280
Features
Image input
✓
—
Voice mode
Partial
✓
Web search
✓
Partial
File upload
✓
—
Image generation
—
—
Code execution
✓
—
Agent / tool use
✓
—
Persistent memory
✓
✓
Claude Opus
Frontier reasoning model. 5× the cost of Sonnet for ~5pt benchmark lift.
Pi
Conversational and EQ-focused. Best voice mode in 2024–2025 (six warm voices). Limited capability vs frontier models. Now part of Microsoft after Inflection acqui-hire.
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