Which is cheaper, Claude Sonnet 4 or Phi-4?

Phi-4 is cheaper for both input ($0.07/M tokens) and output ($0.14/M tokens), compared to Claude Sonnet 4 at $3.00/$15.00 per million tokens.

Which is faster, Claude Sonnet 4 or Phi-4?

Phi-4 is faster at 160 tokens/sec with a TTFT of 100ms, compared to Claude Sonnet 4 at 78 tokens/sec and 320ms TTFT.

Which has a bigger context window, Claude Sonnet 4 or Phi-4?

Claude Sonnet 4 has a 200K token context window, which is larger Phi-4's 16K context window.

Which is better for coding, Claude Sonnet 4 or Phi-4?

Claude Sonnet 4 has a higher coding ELO of 1305 compared to Phi-4's 1130, making it the stronger choice for code generation and programming tasks.

Claude Sonnet 4 vs Phi-4: Pricing, Benchmarks & Verdict (2026)

Name: Claude Sonnet 4 vs Phi-4 — Pricing, Benchmarks & Speed Comparison 2026
Creator: LLMversus
License: https://creativecommons.org/licenses/by/4.0/

Pricing verified Apr 20, 2026By LLMversusUpdated June 14, 2026View methodology

⚡ Quick Answer

Phi-4 is significantly cheaper at $0.07/$0.14 per million tokens vs $3.00/$15.00. Claude Sonnet 4 is stronger for coding with a coding ELO of 1305 vs 1130. Phi-4 is faster at 160 tokens/sec vs 78 tokens/sec. Claude Sonnet 4 ranks higher overall with an Arena ELO of 1280 vs 1150. Claude Sonnet 4 offers a larger 200K context window vs 16K.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

Feature	Claude Sonnet 4	Phi-4
Provider	Anthropic	Microsoft
Input Price / 1M tokens	$3.00	$0.065
Output Price / 1M tokens	$15.00	$0.140
Context Window	200K	16.384K
Max Output Tokens	64,000	4,096
Arena ELO	1,280	1,150
Coding ELO	1,305	1,130
TTFT (ms)	320	100
Tokens/sec	78	160
Multimodal	Yes	No
JSON Mode	Yes	Yes
Function Calling	Yes	No
Vision	Yes	No

When to Use Claude Sonnet 4

Choose Claude Sonnet 4 when you need: best-in-class coding performance, 200k context window, excellent instruction following. It excels at coding, analysis, long-context, agents tasks. Its 200K context window is larger, making it better for long-document processing.

Strengths:

Best-in-class coding performance
200K context window
Excellent instruction following

Best for:

codinganalysislong-contextagents

When to Use Phi-4

Choose Phi-4 when you need: ultra-low cost for a capable model, strong math for its size (14b params), very fast inference, can run on consumer hardware. It excels at cost-sensitive, edge-deployment, math, lightweight-tasks tasks. It is also the more cost-effective option between the two.

Strengths:

Ultra-low cost for a capable model
Strong math for its size (14B params)
Very fast inference
Can run on consumer hardware

Best for:

cost-sensitiveedge-deploymentmathlightweight-tasks

Claude Sonnet 4 vs Phi-4: Pricing, Benchmarks & Verdict (2026)

Side-by-Side Comparison

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