API model · 7 comparisons

DeepSeek V4.1 Flash compared

How DeepSeek V4.1 Flash stacks up against other models on price, limits and the inputs it accepts. Pick a matchup for the full side-by-side, a monthly cost calculator and our verdict.

Prices checked 15 October 2026 from the OpenRouter API.

DeepSeek V4.1 Flash at a glance

Input / 1M tokens
$0.01
Output / 1M tokens
$0.89
Context window
1,048,576 tokens
Longest reply
943,718 tokens
Accepts
image, text
Providers on OpenRouter
30
Best provider uptime, 24 h
100%
Official website

Compare DeepSeek V4.1 Flash with

vs GPT-6 Luna

DeepSeek V4.1 Flash vs GPT-6 Luna

DeepSeek V4.1 Flash and GPT-6 Luna are two of the cheapest capable models around. Luna's price is set by OpenAI. DeepSeek is served by dozens of providers, each with its own price, so which is cheaper depends on where you run it.

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vs Claude Sonnet 5.5

DeepSeek V4.1 Flash vs Claude Sonnet 5.5

DeepSeek V4.1 Flash is a low-cost open-weight model served by many providers. Claude Sonnet 5.5 is a mid-priced all-rounder that also reads files. The price gap is huge, so the question is what Sonnet gives you for the extra money.

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vs Gemini 3.8 Flash

DeepSeek V4.1 Flash vs Gemini 3.8 Flash

DeepSeek V4.1 Flash and Gemini 3.8 Flash are both 'fast' budget models. DeepSeek is cheaper at every provider currently listed. Gemini accepts far more kinds of input.

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vs Claude Haiku 5.5

Claude Haiku 5.5 vs DeepSeek V4.1 Flash

Claude Haiku 5.5 and DeepSeek V4.1 Flash are both low-cost models. Haiku has one fixed price and reads files. DeepSeek is served by many providers at different prices, so the cheaper option depends on your provider and your usage.

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vs GPT-6.1 Sol

GPT-6.1 Sol vs DeepSeek V4.1 Flash

GPT-6.1 Sol is a mid-priced all-rounder that reads files. DeepSeek V4.1 Flash costs a fraction as much and handles text and images. The question is whether Sol's extras are worth the difference.

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vs Claude Opus 5.5

Claude Opus 5.5 vs DeepSeek V4.1 Flash

Claude Opus 5.5 is a premium model, and DeepSeek V4.1 Flash is one of the cheapest capable models available. The price gap is enormous, so the real question is how much checking and correcting each one needs.

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vs GLM 5.3 Flash

GLM 5.3 Flash vs DeepSeek V4.1 Flash

GLM 5.3 Flash from Z.ai and DeepSeek V4.1 Flash are the two most-used budget models on OpenRouter right now. Both are open-weight, MIT-licensed and can read up to about a million tokens. The differences are in what they accept, how they're built and what it takes to run them yourself.

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