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Gemini 2.5 Ultra vs GPT-5 Mini

Google DeepMind vs OpenAI. Specs, benchmarks, and real per-task cost — all in one page.

Verdict

Gemini 2.5 Ultra leads on LMSYS ELO (1385 vs 1288). GPT-5 Mini is ~12.0× cheaper on a 3:1 input:output blend.

Google DeepMind

2M-token context, native video understanding, and Google’s deepest multimodal stack. The long-context king.

2M context windowNative videoBest multimodal reasoning

OpenAI

GPT-5’s smaller, cheaper sibling. Optimized for chat and lightweight agent tasks.

Very low latencyCheap enough for mass consumer apps

Pricing

Input / 1M$7.00$0.50

Output / 1M$21.00$2.00

Context2.0M256K

Max output64K16K

LicenseProprietaryProprietary

Released2026-02-052026-01-21

Benchmarks

LMSYS ELO1385.01288.0

MMLU Pro90.478.5

HumanEval90.285.5

SWE-Bench58.3—

MATH92.079.8

MMMU82.1—

IFEval89.785.4

Per-task cost

Summarize a 1-hour meeting transcript$0.115$0.0085

Review a 500-line pull request$0.098$0.0080

Answer a customer support ticket$0.038$0.0031

Extract structured data from a resume$0.056$0.0045

Debug a stack trace with context$0.084$0.0070

Per-call cost using published token counts for each task. Real-world prompts vary.

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