DeepSeek-V3.1-Terminus vs Gemini 3.1 Pro
Wins 0 of 6 areas
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Wins 6 of 6 areas
Coding · Agents · Reasoning · Facts · Long documents · Following instructions
Gemini 3.1 Pro is the stronger all-rounder.DeepSeek-V3.1-Terminus is cheaper.
Scores updated · 20 tests both models report · How we compare
Where each one wins
Tests won in each of the six areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- CodingWriting and fixing software03Gemini 3.1 Pro3 of 3 tests
- ReasoningHard problems that need careful thinking03Gemini 3.1 Pro3 of 3 tests
- AgentsCarrying out multi-step tasks on its own02Gemini 3.1 Pro2 of 3 tests · 1 tie
- FactsGetting facts right instead of making them up02Gemini 3.1 Pro2 of 2 tests
- Following instructionsDoing exactly what it is asked02Gemini 3.1 Pro2 of 2 tests
- Long documentsFinding answers in very long texts01Gemini 3.1 Pro1 of 1 test
Long documents rests on a single test.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
DeepSeek-V3.1-Terminus costs 91% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Gemini 3.1 Pro pulls ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+30.6points ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+28.9points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+27.2points ahead
Where DeepSeek-V3.1-Terminus pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 20 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGemini 3.1 Pro
- Terminal-Bench 2.1Gemini 3.1 Pro by 28.944.973.8+28.9
- Terminal-Bench HardGemini 3.1 Pro by 23.530.353.8+23.5
- SciCodeGemini 3.1 Pro by 20.73858.7+20.7
AgentsGemini 3.1 Pro
- GDPValGemini 3.1 Pro by 4.110.614.7+4.1
- Terminal-Bench 4.0Gemini 3.1 Pro by 404+4
- τ-Bench V3 · Bankingtie2121.4tie
ReasoningGemini 3.1 Pro
- Humanity's Last ExamGemini 3.1 Pro by 30.616.447+30.6
- CritPtGemini 3.1 Pro by 161.717.7+16
- GPQA DiamondGemini 3.1 Pro by 14.979.294.1+14.9
FactsGemini 3.1 Pro
- AA-Omniscience · AccuracyGemini 3.1 Pro by 27.227.754.9+27.2
- AA-Omniscience · Non-hallucinationGemini 3.1 Pro by 23.925.249.1+23.9
Following instructionsGemini 3.1 Pro
- IFBenchGemini 3.1 Pro by 20.15777.1+20.1
- Multi-ChallengeGemini 3.1 Pro by 1754.471.4+17
Other results6 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- τ²-Bench Telecom (AA run)Gemini 3.1 Pro by 58.537.195.6+58.5
- AA-OmniscienceGemini 3.1 Pro by 58.3-26.431.9+58.3
- Artificial Analysis Coding IndexGemini 3.1 Pro by 25.343.568.8+25.3
- LiveCodeBenchGemini 3.1 Pro by 16.874.991.7+16.8
- AA IntelligenceGemini 3.1 Pro by 14.914.829.7+14.9
- AA Agentic IndexGemini 3.1 Pro by 1.48.910.3+1.4
Questions people ask
Which is better, DeepSeek-V3.1-Terminus or Gemini 3.1 Pro?
Gemini 3.1 Pro wins all six areas where both have results: coding, agents, reasoning, facts, long documents and following instructions. DeepSeek-V3.1-Terminus wins none, but costs 91% less.
Which is better for coding?
Gemini 3.1 Pro. It wins 3 of the 3 coding tests both models report; DeepSeek-V3.1-Terminus wins none.
Which is cheaper?
DeepSeek-V3.1-Terminus costs $0.27 per million input tokens and $1.00 per million output tokens; Gemini 3.1 Pro costs $2.00 and $12.00. That makes DeepSeek-V3.1-Terminus about 91% cheaper for the same work.
How do you compare the two?
We use the 20 benchmark tests both models have published scores on. The verdict counts the 14 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 6 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.