Which is cheaper, Gemini 2.5 Pro or o3-mini?

o3-mini is cheaper for both input ($1.10/M tokens) and output ($4.40/M tokens), compared to Gemini 2.5 Pro at $1.25/$10.00 per million tokens.

Which is faster, Gemini 2.5 Pro or o3-mini?

Gemini 2.5 Pro is faster at 70 tokens/sec with a TTFT of 400ms, compared to o3-mini at 55 tokens/sec and 1500ms TTFT.

Which has a bigger context window, Gemini 2.5 Pro or o3-mini?

Gemini 2.5 Pro has a 1049K token context window, which is larger o3-mini's 200K context window.

Which is better for coding, Gemini 2.5 Pro or o3-mini?

Gemini 2.5 Pro has a higher coding ELO of 1350 compared to o3-mini's 1340, making it the stronger choice for code generation and programming tasks.

Gemini 2.5 Pro vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Name: Gemini 2.5 Pro 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

o3-mini is significantly cheaper at $1.10/$4.40 per million tokens vs $1.25/$10.00. Gemini 2.5 Pro ranks higher overall with an Arena ELO of 1340 vs 1310. Gemini 2.5 Pro offers a larger 1049K context window vs 200K.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

Feature	Gemini 2.5 Pro	o3-mini
Provider	Google	OpenAI
Input Price / 1M tokens	$1.25	$1.10
Output Price / 1M tokens	$10.00	$4.40
Context Window	1.048576M	128K
Max Output Tokens	65,536	65,536
Arena ELO	1,430	1,280
Coding ELO	1,430	1,285
TTFT (ms)	400	350
Tokens/sec	70	25
Multimodal	Yes	No
JSON Mode	Yes	Yes
Function Calling	Yes	No
Vision	Yes	No

When to Use Gemini 2.5 Pro

Choose Gemini 2.5 Pro when you need: 1m token context window, excellent reasoning capabilities, strong coding performance, native multimodal support. It excels at coding, reasoning, long-context, multimodal tasks. Its 1049K context window is larger, making it better for long-document processing.

Strengths:

1M token context window
Excellent reasoning capabilities
Strong coding performance
Native multimodal support

Best for:

codingreasoninglong-contextmultimodal

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. It is also the more cost-effective option between the two.

Strengths:

Strong reasoning
Good math skills
Affordable reasoning

Best for:

reasoningmathgeneral-purpose

Gemini 2.5 Pro vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Side-by-Side Comparison

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