Leaderboard · Compare · Gemini 2.5 Pro vs DeepSeek R1 · Updated
Gemini 2.5 Pro vs DeepSeek R1
Gemini 2.5 Pro edges out DeepSeek R1 on the composite (80.9 vs 75.4). The gap is meaningful but not decisive — see the per-benchmark breakdown below.
At a glance
| Spec | Gemini 2.5 Pro | DeepSeek R1 |
|---|---|---|
| Provider | DeepSeek | |
| Released | 2025-03 | 2025-01 |
| Tier | frontier | open-weights |
| License | Closed | Open · MIT |
| Context window | 2M | 128k |
| $ in / out (per 1M) | $1.25 / $10.00 | $0.55 / $2.19 |
Benchmark scoreboard
Higher is better on every benchmark. Δ shows Gemini 2.5 Pro − DeepSeek R1.
| Benchmark | Gemini 2.5 Pro | DeepSeek R1 | Δ |
|---|---|---|---|
| Chatbot Arena Elo | 1380 | 1357 | +23 |
| MMLU-Pro | 86.0 | 84.0 | +2.0 |
| GPQA Diamond | 84.0 | 71.5 | +12.5 |
| MATH | 92.0 | 97.3 | -5.3 |
| HumanEval | 92.0 | 92.0 | +0.0 |
| SWE-Bench Verified | 63.8 | 49.2 | +14.6 |
Numbers compiled from provider technical reports and Chatbot Arena snapshots — see methodology.
OpenRouter routes Gemini 2.5 Pro, DeepSeek R1, 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)
Gemini 2.5 Pro vs DeepSeek R1: where each one wins
Gemini 2.5 Pro is stronger on
- Arena
- MMLU-Pro
- GPQA
- SWE-Bench
DeepSeek R1 is stronger on
- MATH
Cost comparison
At 10M tokens/day (50/50 split), Gemini 2.5 Pro costs ~$56.25/day vs $13.70/day for DeepSeek R1 — DeepSeek R1 is the cheaper pick at this volume.
Verdict
Gemini 2.5 Pro edges out DeepSeek R1 on the composite (80.9 vs 75.4). 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, Gemini 2.5 Pro or DeepSeek R1?
Gemini 2.5 Pro edges out DeepSeek R1 on the composite (80.9 vs 75.4). The gap is meaningful but not decisive — see the per-benchmark breakdown below. Gemini 2.5 Pro wins on Arena, MMLU-Pro, GPQA, SWE-Bench; DeepSeek R1 wins on MATH.
What does Gemini 2.5 Pro cost compared to DeepSeek R1?
At 10M tokens/day (50/50 split), Gemini 2.5 Pro costs ~$56.25/day vs $13.70/day for DeepSeek R1 — DeepSeek R1 is the cheaper pick at this volume.
What is the context window of Gemini 2.5 Pro vs DeepSeek R1?
Gemini 2.5 Pro: 2M tokens. DeepSeek R1: 128k tokens. Gemini 2.5 Pro has the larger window — useful for long-document RAG and full-codebase prompting.
Is Gemini 2.5 Pro or DeepSeek R1 open source?
Gemini 2.5 Pro: closed / proprietary. DeepSeek R1: open weights (MIT).
Can I try Gemini 2.5 Pro and DeepSeek R1 on the same API key?
Yes — OpenRouter routes both models behind a single key, so you can A/B test Gemini 2.5 Pro against DeepSeek R1 without juggling provider accounts.
Model deep-dives: Gemini 2.5 Pro · DeepSeek R1 · Full leaderboard
Spotted out-of-date numbers? Open an issue — corrections usually ship within 24h.
Try Gemini 2.5 Pro and DeepSeek R1 now
One API key, both models — switch between them per request and let real traffic pick the winner.