Which is cheaper, o3-mini or Phi-4?

Phi-4 is cheaper for both input ($0.07/M tokens) and output ($0.14/M tokens), compared to o3-mini at $1.10/$4.40 per million tokens.

Which is faster, o3-mini or Phi-4?

Phi-4 is faster at 160 tokens/sec with a TTFT of 100ms, compared to o3-mini at 55 tokens/sec and 1500ms TTFT.

Which has a bigger context window, o3-mini or Phi-4?

o3-mini has a 200K token context window, which is larger Phi-4's 16K context window.

Which is better for coding, o3-mini or Phi-4?

o3-mini has a higher coding ELO of 1340 compared to Phi-4's 1130, making it the stronger choice for code generation and programming tasks.

o3-mini vs Phi-4: Pricing, Benchmarks & Verdict (2026)

Name: o3-mini 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 $1.10/$4.40. o3-mini is stronger for coding with a coding ELO of 1340 vs 1130. Phi-4 is faster at 160 tokens/sec vs 55 tokens/sec. o3-mini ranks higher overall with an Arena ELO of 1310 vs 1150. o3-mini offers a larger 200K context window vs 16K.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

Feature	o3-mini	Phi-4
Provider	OpenAI	Microsoft
Input Price / 1M tokens	$1.10	$0.065
Output Price / 1M tokens	$4.40	$0.140
Context Window	128K	16.384K
Max Output Tokens	65,536	4,096
Arena ELO	1,280	1,150
Coding ELO	1,285	1,130
TTFT (ms)	350	100
Tokens/sec	25	160
Multimodal	No	No
JSON Mode	Yes	Yes
Function Calling	No	No
Vision	No	No

When to Use o3-mini

Choose o3-mini when you need: strong mathematical reasoning, good coding performance, affordable reasoning model, large output window. It excels at reasoning, math, coding, science tasks. Its 200K context window is larger, making it better for long-document processing.

Strengths:

Strong reasoning
Good math skills
Affordable reasoning

Best for:

reasoningmathgeneral-purpose

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

o3-mini vs Phi-4: Pricing, Benchmarks & Verdict (2026)

Side-by-Side Comparison

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