AnthropicDeepSeekLLM matchup

Claude Haiku 4.5vs.DeepSeek-V4.1-Flash

Which one is better?

DeepSeek-V4.1-Flash performs better than Claude Haiku 4.5 and is cheaper: Claude Haiku 4.5 costs 6.7 times (input) and 8.3 times (output) as much.

DeepSeek-V4.1-Flash ahead

IntelligenceOverall index, 100 points = average

53.7

Claude Haiku 4.5

Rank 79

99.7

DeepSeek-V4.1-Flash

Rank 29

DeepSeek-V4.1-Flash faster

SpeedTokens per second

Claude Haiku 4.5

176

DeepSeek-V4.1-Flash

DeepSeek-V4.1-Flash cheaper

Price$ per 1M tokens

Claude Haiku 4.5

$0.26

DeepSeek-V4.1-Flash

DeepSeek-V4.1-Flash more popular

Popularity0 to 100

Claude Haiku 4.5

Rank 430 of 875

DeepSeek-V4.1-Flash

Rank 298 of 875

Choose Claude Haiku 4.5 for

No clear advantage

Choose DeepSeek-V4.1-Flash for

CodingAgentsFinanceGeneralProductivity

Where is the difference?

Strengths at a glance

Haiku 4.5DeepSeek-V4.1-Flash

The median of all ranked models is below 100 in every area, so it sits in the centre of the net.

CodingDeepSeek-V4.1-Flash ahead

Haiku 4.548.9Rank 96

DeepSeek-V4.1-Flash98.8Rank 30

Median of ranked models83.7

95 % range: Haiku 4.5 38.6 to 59.3, DeepSeek-V4.1-Flash 91.4 to 106.3.

AreaHaiku 4.5DeepSeek-V4.1-Flash

The same values and verdicts as the bars below. In the top field the net starts at 100 points, the reference group average; values below sit as a hollow point in the centre. Not in the net because a model has no own value there or the data are too thin: Reasoning, Mathematics, Knowledge, Multimodal, Legal, Health.

DeepSeek-V4.1-Flash is ahead in 4 of 10 areas, Haiku 4.5 in none.

too little data: 6DeepSeek-V4.1-Flash ahead: 4

Areas in the overall index

CodingDeepSeek-V4.1-Flash +5048.9 to 98.8

AgentsDeepSeek-V4.1-Flash +4660.1 to 106.4

GeneralDeepSeek-V4.1-Flash +4552.1 to 97.1

Reasoningonly Haiku 4.5 has a score

Mathematicsonly DeepSeek-V4.1-Flash has a score

Knowledgeonly Haiku 4.5 has a score

Multimodalonly DeepSeek-V4.1-Flash has a score

Specialist fields

FinanceDeepSeek-V4.1-Flash +4658.0 to 103.7

Legalonly DeepSeek-V4.1-Flash has a score

Healthonly DeepSeek-V4.1-Flash has a score

Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.

Show 3 more areas that do not count toward the overall index

ProductivityDeepSeek-V4.1-Flash +4158.8 to 99.7

Cybersecurityonly DeepSeek-V4.1-Flash has a score

Educationonly DeepSeek-V4.1-Flash has a score

Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.

Which model for which task?

Everyday tasks, translated from the area values above. Each row names the values it rests on.

TaskBetter choicebased on

Writing and debugging codeDeepSeek-V4.1-FlashCoding 48.9 to 98.8

Maths and data analysisopenMathematics without a score for Haiku 4.5, Reasoning without a score for DeepSeek-V4.1-Flash

Facts and researchopenKnowledge without a score for DeepSeek-V4.1-Flash

Agents and workflowsDeepSeek-V4.1-FlashAgents 60.1 to 106.4

Fast chat repliesDeepSeek-V4.1-Flash97 to 176 tokens per second

Security analysisopenCybersecurity without a score for Haiku 4.5

Many requests on a small budgetDeepSeek-V4.1-Flash$2 to $0.26 per 1M tokens

Finance, legal and medical textsDeepSeek-V4.1-FlashFinance 58.0 to 103.7, Legal without a score for Haiku 4.5, Health without a score for Haiku 4.5

Images, screenshots and PDFsopenMultimodal without a score for Haiku 4.5

See for yourself: same task, one attempt

SVG short test

One SVG task with the same fixed settings for every model, without hidden thinking.

Prompt

Return only one standalone SVG of a pelican riding a bicycle. Use viewBox="0 0 800 600", simple shapes, two clearly visible wheels and a recognizable pelican with a long beak. At most 30 SVG elements and 1800 characters. No Markdown, explanations, comments, scripts, animation, CSS or external resources.

Claude Haiku 4.5

DeepSeek-V4.1-Flash

Earlier tests

Pelican on a bicycle

Prompt

Generate an SVG of a pelican riding a bicycle

Task origin: Simon Willison

Claude Haiku 4.5

Oct 1, 2026 · 10 s · $0.0080

Test details

Run date: Oct 1, 2026
API provider: openrouter
Requested API model: anthropic/claude-haiku-4.5
Reasoning setting: high
Token limit including reasoning: 8,192 tokens
Output tokens: 1,585 tokens
Cost of the attempt: $0.0080
Response time: 10.1 s
API model reported in response: anthropic/claude-haiku-4.5
Pinned endpoint: Anthropic | anthropic/claude-4.5-haiku-20251001
Temperature: Provider default
Test protocol: community-visual-tests-v1
Technical checks: Passed, not a quality rating

Visually reviewed. This individual test does not establish overall model quality.

DeepSeek-V4.1-Flash

The response reached the token limit. No complete recording is available.

Oct 5, 2026 · 26 s · $0.0049

Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.

Test details

Run date: Oct 5, 2026
API provider: openrouter
Requested API model: deepseek/deepseek-v4.1-flash
Reasoning setting: high
Token limit including reasoning: 8,192 tokens
Output tokens: 8,191 tokens
Cost of the attempt: $0.0049
Response time: 25.8 s
API model reported in response: deepseek/deepseek-v4.1-flash
Pinned endpoint: DeepSeek | deepseek/deepseek-v4.1-flash-20260910
Temperature: Provider default
Test protocol: community-visual-tests-v1
Technical checks: Failed

Earlier attempts (2)

Oct 2, 2026API request failedReasoning setting: high
Oct 1, 2026API request failedReasoning setting: high

Claude Haiku 4.5 and DeepSeek-V4.1-Flash in the overall index

Every model with a place in the overall index, both models of this matchup highlighted. You can add or hide other models.

Overall index (Gradually Meta-Score v4)

20 of 91 models

4 models in this view are measured at a lower reasoning effort than max in the overall index. Dashed column: lower reasoning effort than the top.

Claude Opus 5.5max126.1

Gemini 4 Carbonhigh125.7

Claude Fable 5.1max123.8

Claude Sonnet 5.5max122.8

Gemini 4 Argonhigh122.3

GPT-6 Astramax121.3

GPT-6.1 Solmax119.2

Muse Wonder Fullmax118.3

Claude Opus 5max117.2

Muse Wondermax113.4

Kimi K3.1 Promax112.9

Claude Fable 5max112.5

GPT-6 Solmax110.6

GPT-5.6 Solmax108.7

Muse Spark 1.3max107.4

Gemini 3.7 Flashhigh107.1

DeepSeek V4.1 Flash 1017max106.6

Gemini 3.8 Flashhigh106.5

DeepSeek-V4.1-Flashmax99.7

Claude Haiku 4.553.7

Claude Opus 5.5

Gemini 4 Carbon

Claude Fable 5.1

Claude Sonnet 5.5

Gemini 4 Argon

GPT-6 Astra

GPT-6.1 Sol

Muse Wonder Full

Claude Opus 5

Muse Wonder

Kimi K3.1 Pro

Claude Fable 5

GPT-6 Sol

GPT-5.6 Sol

Muse Spark 1.3

Gemini 3.7 Flash

DeepSeek V4.1 Flash 1017

Gemini 3.8 Flash

DeepSeek-V4.1-Flash

Claude Haiku 4.5

Popularity compared

How often the models are searched for, used and mentioned, on a scale from 0 to 100.

DeepSeek-V4.1-Flash is more popular than Claude Haiku 4.5: 38 to 31 out of 100.

Over time

Weekly values from October 18, 2026 to November 5, 2026

Claude Haiku 4.5DeepSeek-V4.1-Flash

All data side by side

The better value is bold. For the overall index only when the gap is clear.

Metric	Claude Haiku 4.5	DeepSeek-V4.1-Flash
Intelligence
Overall indexpoints, 100 = reference group average, higher is better	53.7	99.7
Rank	Rank 79 of 91	Rank 29 of 91
Price per 1M tokens
Inputwhat you send	$1	$0.15
Outputwhat the model writes	$5	$0.60
Cost per task (own tests)average of 2 tests both passed	$0.03	$0.008
Speed
Tokens per second	97	176
Popularity
Popularitysearch, usage and mentions, 0 to 100	31Rank 430 of 875	38Rank 298 of 875
Technical
Context windowhow much text the model reads at once	200,000 tokens≈ 300 A4 pages	1 M tokens≈ 1,500 A4 pages
Knowledge cutoff	February 2025	n/a
Released	October 2025	Sep 10, 2026
Availability	Active	Active
Open weights	no	yes

DeepSeek-V4.1-Flash: At peak times (Mon, Tue, Wed, Thu, Fri, 01:00-04:00 UTC; Mon, Tue, Wed, Thu, Fri, 06:00-10:00 UTC) the price is $0.30 input and $1.20 output per 1M tokens. The table shows the off-peak price.

Prices without caching or batch discounts · Page count as a rule of thumb from Artificial Analysis

Is there a better choice?

Successor of Haiku 4.5Claude Haiku 5.5

Overall index 103.4, rank 20. $0.10 input and $0.50 output per 1M tokens.

DeepSeek-V4.1-Flash vs. Claude Haiku 5.5

Successor of DeepSeek-V4.1-FlashDeepSeek V4.1 Flash 1017

Overall index 106.6, rank 17. $0.15 input and $0.60 output per 1M tokens.

Haiku 4.5 vs. DeepSeek V4.1 Flash 1017

Cheaper than DeepSeek-V4.1-FlashMiMo V2.6 Flash

Overall index 98.3, rank 31. $0.14 input and $0.28 output per 1M tokens.

View profile

Shared benchmarks

Single results from the same benchmark version, task and metric. A value is bold only with the same test setup and a clear gap.

A: Claude Haiku 4.5B: DeepSeek-V4.1-Flash

MMMU-ProOverall · higher is better55.1%65.6%Artificial AnalysisAs of 11/06/2026

Public Benefits Bench v1.1Overall · higher is betterTest setup not documented as identical54.3%64.3%Vals AIAs of 10/12/2026

More comparisons

Compare Claude Haiku 4.5 and DeepSeek-V4.1-Flash with the models people compare them with most often.

Claude Haiku 4.5vs.DeepSeek-V4.1-Flash

Choose Claude Haiku 4.5 for

Choose DeepSeek-V4.1-Flash for

Where is the difference?

Strengths at a glance

Which model for which task?

See for yourself: same task, one attempt

SVG short test

Claude Haiku 4.5

DeepSeek-V4.1-Flash

Pelican on a bicycle

Claude Haiku 4.5 and DeepSeek-V4.1-Flash in the overall index

Overall index (Gradually Meta-Score v4)

Popularity compared

Over time

All data side by side

Is there a better choice?

Shared benchmarks

More comparisons

Compare another matchup

Predecessor and successor

The most popular comparisons