Which is cheaper, Grok 3 Mini or o3-mini?

Grok 3 Mini is cheaper for both input ($0.30/M tokens) and output ($0.50/M tokens), compared to o3-mini at $1.10/$4.40 per million tokens.

Which is faster, Grok 3 Mini or o3-mini?

Grok 3 Mini is faster at 110 tokens/sec with a TTFT of 180ms, compared to o3-mini at 55 tokens/sec and 1500ms TTFT.

Which has a bigger context window, Grok 3 Mini or o3-mini?

o3-mini has a 200K token context window, which is larger Grok 3 Mini's 128K context window.

Which is better for coding, Grok 3 Mini or o3-mini?

o3-mini has a higher coding ELO of 1340 compared to Grok 3 Mini's 1200, making it the stronger choice for code generation and programming tasks.

Grok 3-mini vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Name: Grok 3-mini vs o3-mini — 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

Grok 3 Mini is significantly cheaper at $0.30/$0.50 per million tokens vs $1.10/$4.40. o3-mini is stronger for coding with a coding ELO of 1340 vs 1200. Grok 3 Mini is faster at 110 tokens/sec vs 55 tokens/sec. o3-mini ranks higher overall with an Arena ELO of 1310 vs 1220. o3-mini offers a larger 200K context window vs 128K.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

Feature	Grok 3-mini	o3-mini
Provider	xAI	OpenAI
Input Price / 1M tokens	$0.300	$1.10
Output Price / 1M tokens	$0.500	$4.40
Context Window	128K	128K
Max Output Tokens	4,096	65,536
Arena ELO	1,175	1,280
Coding ELO	1,190	1,285
TTFT (ms)	130	350
Tokens/sec	140	25
Multimodal	No	No
JSON Mode	Yes	Yes
Function Calling	Yes	No
Vision	No	No

When to Use Grok 3-mini

Choose Grok 3 Mini when you need: very affordable pricing, fast response times, good for simple tasks, reasoning capabilities at low cost. It excels at chatbots, cost-sensitive, lightweight-tasks tasks. It is also the more cost-effective option between the two.

Strengths:

Very cheap
Fast
Large context

Best for:

cost-effectivegeneral-purpose

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

Grok 3-mini vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Side-by-Side Comparison

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