Leaderboard · Compare · DeepSeek V3 vs GPT-4o mini · Updated
DeepSeek V3 vs GPT-4o mini
DeepSeek V3 edges out GPT-4o mini on the composite (68.0 vs 61.3). The gap is meaningful but not decisive — see the per-benchmark breakdown below.
At a glance
| Spec | DeepSeek V3 | GPT-4o mini |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Released | 2024-12 | 2024-07 |
| Tier | open-weights | fast / cheap |
| License | Open · DeepSeek License | Closed |
| Context window | 128k | 128k |
| $ in / out (per 1M) | $0.27 / $1.10 | $0.15 / $0.60 |
Benchmark scoreboard
Higher is better on every benchmark. Δ shows DeepSeek V3 − GPT-4o mini.
| Benchmark | DeepSeek V3 | GPT-4o mini | Δ |
|---|---|---|---|
| Chatbot Arena Elo | 1320 | 1273 | +47 |
| MMLU-Pro | 75.9 | 64.9 | +11.0 |
| GPQA Diamond | 59.1 | 40.2 | +18.9 |
| MATH | 90.2 | 70.2 | +20.0 |
| HumanEval | 91.0 | 87.2 | +3.8 |
| SWE-Bench Verified | 42.0 | N/A | — |
Numbers compiled from provider technical reports and Chatbot Arena snapshots — see methodology.
OpenRouter routes DeepSeek V3, GPT-4o mini, 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)
DeepSeek V3 vs GPT-4o mini: where each one wins
DeepSeek V3 is stronger on
- Arena
- MMLU-Pro
- GPQA
- MATH
- HumanEval
GPT-4o mini is stronger on
No benchmarks where GPT-4o mini beats DeepSeek V3 with comparable data.
Cost comparison
At 10M tokens/day (50/50 split), DeepSeek V3 costs ~$6.85/day vs $3.75/day for GPT-4o mini — GPT-4o mini is the cheaper pick at this volume.
Verdict
DeepSeek V3 edges out GPT-4o mini on the composite (68.0 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, DeepSeek V3 or GPT-4o mini?
DeepSeek V3 edges out GPT-4o mini on the composite (68.0 vs 61.3). The gap is meaningful but not decisive — see the per-benchmark breakdown below. DeepSeek V3 wins on Arena, MMLU-Pro, GPQA, MATH, HumanEval; GPT-4o mini wins on no benchmarks.
What does DeepSeek V3 cost compared to GPT-4o mini?
At 10M tokens/day (50/50 split), DeepSeek V3 costs ~$6.85/day vs $3.75/day for GPT-4o mini — GPT-4o mini is the cheaper pick at this volume.
What is the context window of DeepSeek V3 vs GPT-4o mini?
DeepSeek V3: 128k tokens. GPT-4o mini: 128k tokens.
Is DeepSeek V3 or GPT-4o mini open source?
DeepSeek V3: open weights (DeepSeek License). GPT-4o mini: closed / proprietary.
Can I try DeepSeek V3 and GPT-4o mini on the same API key?
Yes — OpenRouter routes both models behind a single key, so you can A/B test DeepSeek V3 against GPT-4o mini without juggling provider accounts.
Model deep-dives: DeepSeek V3 · GPT-4o mini · Full leaderboard
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Try DeepSeek V3 and GPT-4o mini now
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