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Model comparison · Updated 10 Oct 2026

DeepSeek V4.1 Flash vs Gemini 2.5 Flash

DeepSeek V4.1 Flash and Gemini 2.5 Flash cost the same on input, $0.30 per 1M tokens. Both have a 1.05M-token context window. For a support chatbot at 10,000 chats a day, the standard-tier bill is about $243 a month for DeepSeek V4.1 Flash and $360 for Gemini 2.5 Flash.

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ModelsAtlas. “DeepSeek V4.1 Flash vs Gemini 2.5 Flash”. Retrieved 10 Oct 2026. https://modelsatlas.com/compare/deepseek/v4-1/vs/google/gemini-2-5

Model A

DeepSeek V4.1 Flash

by DeepSeek · weights not marked open · GRIDD5

Input / 1M
$0.30
observed We measured
Source
Our catalogue
Retrieved
10 Oct 2026
Output / 1M$1.20
Context1.05M
vs

Model B

Gemini 2.5 Flash

by Google · weights not marked open · GRIDD5

Input / 1M
$0.30
observed We measured
Source
Our catalogue
Retrieved
17 Aug 2026
Output / 1M$2.50
Context1.05M

Key numbers

Standard tier · highlighted = better

DeepSeek V4.1 Flash
Gemini 2.5 Flash
Input / 1M tokens
$0.30
$0.30
Output / 1M tokens
$1.20
$2.50
Batch input / output
$0.11 / $0.34
$0.05 / $0.20
Context window
1,048,576
1,048,576
Input types
Not disclosed
Not disclosed
Weights
Not marked open
Not marked open
Tiers listed
batch, standard
batch, standard
Prices checked
2026-10-10
2026-08-17

What it costs for real workloads

Monthly, standard tier, 30 days

Support chatbot10k chats/day · 1.5k in, 300 out
$243/mo
$360/mo
RAG over documents2k queries/day · 12k in, 500 out
$252/mo
$291/mo
Coding agent300 tasks/day · 60k in, 8k out
$248/mo
$342/mo

DeepSeek V4.1 Flash   Gemini 2.5 Flash · Derived from the standard-tier prices above, input and output tokens per request as stated, 30 days. Excludes caching discounts and batch. Try your own numbers.

On the atlas

Price band (A–H) × context band (1–6)

Same square. DeepSeek V4.1 Flash and Gemini 2.5 Flash share D5.

Same square as DeepSeek V4.1 Flash: Gemini 3.5 Flash Lite ($0.30), MiniMax M3 ($0.30), Qwen3.5 Plus 2026-04-20 ($0.30). Open D5

AFreeB<$0.10C$0.10–0.30D$0.30–1E$1–3F$3–10G$10–30H$30+1<32K232–128K3128–256K4256K–1M51M6>1MINPUT PRICE PER 1M TOKENS →CONTEXT WINDOW ↑ · position within a square follows the real valueGemini 3.5 Flash Lite · D5MiniMax M3 · D5Qwen3.5 Plus 2026-04-20 · D5Qwen3.7 Plus · D5Qwen3.6 Plus · D5DeepSeek V4.1 FlashDeepSeek V4.1 FlashGemini 2.5 FlashGemini 2.5 Flash
DeepSeek V4.1 FlashGemini 2.5 FlashNearest neighboursOpen weights
View the map as a table (1 squares)
SquarePrice bandContext bandModels
GRIDD5$0.30–11MDeepSeek V4.1 Flash, Gemini 2.5 Flash, Gemini 3.5 Flash Lite, MiniMax M3, Qwen3.5 Plus 2026-04-20, Qwen3.7 Plus, Qwen3.6 Plus

Capabilities side by side

Only what our records list

DeepSeek V4.1 Flash
Gemini 2.5 Flash
Vision input
Not disclosed
Not disclosed
Audio input
Not disclosed
Not disclosed
Open weights
Not marked open
Not marked open
Batch tier
Supported
Supported
Free tier
Not listed
Not listed
Thinking tier
Not listed
Not listed

Neither record lists input types, so we do not claim any.

Which should you choose?

Editorial

Choose DeepSeek V4.1 Flash if…

  • output dominates your bill: $1.20 per 1M output against $2.50
  • you will batch: its batch rate is 37% of standard against 50%

Choose Gemini 2.5 Flash if…

Nothing in the recorded numbers favours Gemini 2.5 Flash over DeepSeek V4.1 Flash. Pick it for what our records do not cover — your own tests, or an account you already have with Google.

Each reason is a fact from the tables above. Picking between them is our judgement, and we do not benchmark quality: price and context are what we can measure, so test both on your own prompts before you commit.

Questions

Is DeepSeek V4.1 Flash better than Gemini 2.5 Flash?
We do not benchmark quality, so we cannot say. On the recorded numbers: DeepSeek V4.1 Flash and Gemini 2.5 Flash cost the same on input, $0.30 per 1M tokens. Both have a 1.05M-token context window. For a support chatbot at 10,000 chats a day, the standard-tier bill is about $243 a month for DeepSeek V4.1 Flash and $360 for Gemini 2.5 Flash. Which is better for you depends on your task; test both on your own prompts.
Which is cheaper, DeepSeek V4.1 Flash or Gemini 2.5 Flash?
They cost the same on input, $0.30 per 1M tokens. Output is $1.20 for DeepSeek V4.1 Flash and $2.50 for Gemini 2.5 Flash.
How much does each cost per 1M tokens?
DeepSeek V4.1 Flash: $0.30 input and $1.20 output. Gemini 2.5 Flash: $0.30 input and $2.50 output. Standard tier, USD.
Which has the larger context window?
Neither: both have 1,048,576 tokens.
Do both offer batch pricing?
DeepSeek V4.1 Flash lists a batch tier, at 37% of its standard price. Gemini 2.5 Flash lists a batch tier, at 50% of its standard price.
Can both read images or audio?
Input types recorded for DeepSeek V4.1 Flash: none recorded. For Gemini 2.5 Flash: none recorded. Where a record lists none we say so rather than guess; check each vendor's documentation before relying on a capability.
Is either model open-weight?
DeepSeek V4.1 Flash: not marked open-weight in our records. Gemini 2.5 Flash: not marked open-weight in our records.
What would each cost for a support chatbot?
At 10,000 chats a day, 1,500 input and 300 output tokens each, 30 days, standard tier: about $243 a month for DeepSeek V4.1 Flash and $360 for Gemini 2.5 Flash. This is our calculation from the listed prices, not a quote.

About the two models

DeepSeek V4.1 Flash

By DeepSeek. $0.30 input and $1.20 output per 1M tokens, 1.05M context, atlas square D5. Tiers listed: batch, standard.

Full specs & pricing →

Gemini 2.5 Flash

By Google. $0.30 input and $2.50 output per 1M tokens, 1.05M context, atlas square D5. Tiers listed: batch, standard.

Full specs & pricing →

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