DeepSeek V4 Pro vs Gemini 3.1 Pro: which is better for agents?

Gemini 3.1 Pro scores higher on output quality (9.2/10 vs 8.9/10), while DeepSeek V4 Pro is the cheaper option. DeepSeek V4 Pro is best for cost-conscious agents that still want top-tier output; Gemini 3.1 Pro is best for huge-context and multimodal work, and gemini cli users. Live community votes on this page show what people actually prefer.

Is DeepSeek V4 Pro cheaper than Gemini 3.1 Pro?

DeepSeek V4 Pro is cheaper: roughly $1.08 vs $5.00 per 1M tokens (blended). DeepSeek V4 Pro: $0.83 in · $1.66 out / 1M tokens. Gemini 3.1 Pro: $2.00 in · $12 out / 1M tokens.

Can I switch between DeepSeek V4 Pro and Gemini 3.1 Pro in the same agent?

Yes. Model-agnostic agents (Cline, Aider, OpenClaw, Hermes Agent, Kilo Code, OpenCode, Continue) let you swap models per task — many people route hard tasks to the stronger model and routine work to the cheaper one.

DeepSeek V4 Pro vs Gemini 3.1 Pro — Which AI Model Is Better? (2026)

Community Vote

Pick a winner in each dimension — change your vote anytime. 5 votes cast so far.

Output Quality

Correctness and depth of what it produces

DeepSeek V4 Pro 0%100% Gemini 3.1 Pro

Agentic Ability

Tool calls, instruction-following, and multi-step tasks

DeepSeek V4 Pro 100%0% Gemini 3.1 Pro

Speed

Tokens per second and time-to-first-token

DeepSeek V4 Pro 0%100% Gemini 3.1 Pro

Value for $

How much capability you get per dollar

DeepSeek V4 Pro 100%0% Gemini 3.1 Pro

Reliability

Consistent results — fewer refusals, loops, and format breaks

DeepSeek V4 Pro 100%0% Gemini 3.1 Pro

Specs & Pricing, Side by Side

Spec

DeepSeek V4 Pro

Gemini 3.1 Pro

Maker

DeepSeek

Google

Blended price / 1M

$1.08

$5.00

Input / output

$0.83 in · $1.66 out / 1M tokens

$2.00 in · $12 out / 1M tokens

Context window

1.0M

Open weights

Yes

Tool use

Yes

Reasoning

Yes

Output Quality

8.9

9.2

Agentic Ability

9.0

Speed

7.4

7.5

Value for $

9.4

8.1

Reliability

8.8

Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).

Verdict: DeepSeek V4 Pro or Gemini 3.1 Pro?

Updated 2026-09-05

Choose DeepSeek V4 Pro if you want cost-conscious agents that still want top-tier output. Choose Gemini 3.1 Pro if you want huge-context and multimodal work, and Gemini CLI users.

In our editorial scoring, Gemini 3.1 Pro leads in 2 of five dimensions (output quality and speed), while DeepSeek V4 Pro leads in 1. On price, DeepSeek V4 Pro runs about $1.08 per 1M tokens (blended) and is open-weight; Gemini 3.1 Pro is about $5.00 and proprietary.

Across 5 community votes on this matchup, DeepSeek V4 Pro currently leads in 3 of five dimensions. Cast your own vote above to move the needle.

Where DeepSeek V4 Pro falls short

Tool-use polish behind the top closed models
Hosted throughput varies by provider

Full DeepSeek V4 Pro breakdown →

Where Gemini 3.1 Pro falls short

Tool use a touch behind Claude/GPT on some agents
Preview-tier stability varies

Full Gemini 3.1 Pro breakdown →

The model is half the story — the agent is the other half

The model picks the moves; the agent runs the loop, the tools, and the guardrails. Once you've chosen a model, see which agent gets the most out of it.

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Every model on this page is included with Standard Compute

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