Leaderboard · Compare · GPT-4o mini vs Gemini 2.0 Flash · Updated
GPT-4o mini vs Gemini 2.0 Flash
Gemini 2.0 Flash edges out GPT-4o mini on the composite (65.6 vs 61.3). The gap is meaningful but not decisive — see the per-benchmark breakdown below.
At a glance
| Spec | GPT-4o mini | Gemini 2.0 Flash |
|---|---|---|
| Provider | OpenAI | |
| Released | 2024-07 | 2024-12 |
| Tier | fast / cheap | fast / cheap |
| License | Closed | Closed |
| Context window | 128k | 1M |
| $ in / out (per 1M) | $0.15 / $0.60 | $0.10 / $0.40 |
Benchmark scoreboard
Higher is better on every benchmark. Δ shows GPT-4o mini − Gemini 2.0 Flash.
| Benchmark | GPT-4o mini | Gemini 2.0 Flash | Δ |
|---|---|---|---|
| Chatbot Arena Elo | 1273 | 1310 | -37 |
| MMLU-Pro | 64.9 | 76.4 | -11.5 |
| GPQA Diamond | 40.2 | 62.1 | -21.9 |
| MATH | 70.2 | 83.5 | -13.3 |
| HumanEval | 87.2 | 89.0 | -1.8 |
| SWE-Bench Verified | N/A | 35.0 | — |
Numbers compiled from provider technical reports and Chatbot Arena snapshots — see methodology.
OpenRouter routes GPT-4o mini, Gemini 2.0 Flash, and 100+ other LLMs behind a single API key — pay-as-you-go, no monthly minimum, fallback if a provider is down. Try OpenRouter → (affiliate · supports this site)
GPT-4o mini vs Gemini 2.0 Flash: where each one wins
GPT-4o mini is stronger on
No benchmarks where GPT-4o mini beats Gemini 2.0 Flash with comparable data.
Gemini 2.0 Flash is stronger on
- Arena
- MMLU-Pro
- GPQA
- MATH
- HumanEval
Cost comparison
At 10M tokens/day (50/50 split), GPT-4o mini costs ~$3.75/day vs $2.50/day for Gemini 2.0 Flash — Gemini 2.0 Flash is the cheaper pick at this volume.
Verdict
Gemini 2.0 Flash edges out GPT-4o mini on the composite (65.6 vs 61.3). The gap is meaningful but not decisive — see the per-benchmark breakdown below.
If you can only pick one and your workload is unclear, route via OpenRouter and switch by request — same key, no lock-in.
Frequently asked questions
Which is better, GPT-4o mini or Gemini 2.0 Flash?
Gemini 2.0 Flash edges out GPT-4o mini on the composite (65.6 vs 61.3). The gap is meaningful but not decisive — see the per-benchmark breakdown below. GPT-4o mini wins on no benchmarks; Gemini 2.0 Flash wins on Arena, MMLU-Pro, GPQA, MATH, HumanEval.
What does GPT-4o mini cost compared to Gemini 2.0 Flash?
At 10M tokens/day (50/50 split), GPT-4o mini costs ~$3.75/day vs $2.50/day for Gemini 2.0 Flash — Gemini 2.0 Flash is the cheaper pick at this volume.
What is the context window of GPT-4o mini vs Gemini 2.0 Flash?
GPT-4o mini: 128k tokens. Gemini 2.0 Flash: 1M tokens. Gemini 2.0 Flash has the larger window — useful for long-document RAG and full-codebase prompting.
Is GPT-4o mini or Gemini 2.0 Flash open source?
GPT-4o mini: closed / proprietary. Gemini 2.0 Flash: closed / proprietary.
Can I try GPT-4o mini and Gemini 2.0 Flash on the same API key?
Yes — OpenRouter routes both models behind a single key, so you can A/B test GPT-4o mini against Gemini 2.0 Flash without juggling provider accounts.
Model deep-dives: GPT-4o mini · Gemini 2.0 Flash · Full leaderboard
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Try GPT-4o mini and Gemini 2.0 Flash now
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