Which is cheaper, GPT-4o or Phi-4?

Phi-4 is cheaper for both input ($0.07/M tokens) and output ($0.14/M tokens), compared to GPT-4o at $2.50/$10.00 per million tokens.

Which is faster, GPT-4o or Phi-4?

Phi-4 is faster at 160 tokens/sec with a TTFT of 100ms, compared to GPT-4o at 95 tokens/sec and 230ms TTFT.

Which has a bigger context window, GPT-4o or Phi-4?

GPT-4o has a 128K token context window, which is larger Phi-4's 16K context window.

Which is better for coding, GPT-4o or Phi-4?

GPT-4o has a higher coding ELO of 1265 compared to Phi-4's 1130, making it the stronger choice for code generation and programming tasks.

GPT-4o vs Phi-4: Pricing, Benchmarks & Verdict (2026)

Name: GPT-4o 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 $2.50/$10.00. GPT-4o is stronger for coding with a coding ELO of 1265 vs 1130. Phi-4 is faster at 160 tokens/sec vs 95 tokens/sec. GPT-4o ranks higher overall with an Arena ELO of 1260 vs 1150. GPT-4o offers a larger 128K context window vs 16K.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

Feature	GPT-4o	Phi-4
Provider	OpenAI	Microsoft
Input Price / 1M tokens	$2.50	$0.065
Output Price / 1M tokens	$10.00	$0.140
Context Window	128K	16.384K
Max Output Tokens	16,384	4,096
Arena ELO	1,260	1,150
Coding ELO	1,265	1,130
TTFT (ms)	230	100
Tokens/sec	95	160
Multimodal	Yes	No
JSON Mode	Yes	Yes
Function Calling	Yes	No
Vision	Yes	No

When to Use GPT-4o

Choose GPT-4o when you need: fast response times, strong multimodal capabilities, code execution support. It excels at general-purpose, multimodal, function-calling tasks. Its 128K context window is larger, making it better for long-document processing.

Strengths:

Fast response times
Strong multimodal capabilities
Code execution support

Best for:

general-purposemultimodalfunction-calling

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

GPT-4o vs Phi-4: Pricing, Benchmarks & Verdict (2026)

Side-by-Side Comparison

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