anthropic
DeepSeek V4.1 Flash vs Claude Haiku 5.5
69.8 overall · $0.200 / 1M
// deepseek
DeepSeek V4.1 Flash
deepseek/deepseek-v4.1-flash
reasoningtool callingimage inputprompt caching
DeepSeek V4.1 Flash costs $0.051 per 1M input tokens and $0.567 per 1M output tokens with a 1.0M-token context window.
A reasoning, tool-calling model from deepseek, released Sep 10, 2026. LiveBench hasn't published a run for it, so this page carries measured price and specs only — no benchmark numbers.
- Input / 1M
- $0.051
- Output / 1M
- $0.567
- Context
- 1.0M
- LiveBench overall
- Not evaluated
Specs and pricing
| Input price USD per 1M prompt tokens | $0.051 |
|---|---|
| Output price USD per 1M completion tokens, reasoning included | $0.567 |
| Blended price 3:1 input:output — #78 cheapest of 350 listed models | $0.180 |
| Cached input read Blank means not priced separately — not free | $0.018 |
| Cache write | — |
| Context window | 1,048,576 tokens |
| Max output | 943,718 tokens |
| Input modalities | text, image |
| Tool calling | Yes |
| Extended reasoning | Yes |
| Knowledge cutoff | — |
| Listed | Sep 10, 2026 |
Also listed as deepseek/deepseek-v4.1-flash:batch ($0.168 blended)— the same model at a different price or rate limit.
What DeepSeek V4.1 Flash costs to run
Monthly list cost across five workload shapes, using the published cached-input rate where there is one. A floor, not a quote — batch discounts and cache writes aren't included.
| Workload | Per month |
|---|---|
| Support chatbot 1.2K in / 400 out × 200K requests | $55.22/mo |
| RAG assistant 8K in / 600 out × 100K requests | $61.62/mo |
| Coding agent 40K in / 4K out × 20K requests | $67.68/mo |
| Document extraction 20K in / 1.5K out × 50K requests | $91.88/mo |
| Bulk classification 500 in / 20 out × 5M requests | $167.70/mo |
Compare DeepSeek V4.1 Flash with
Benchmarked models at a similar price.
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DeepSeek V4.1 Flash vs Nemotron 3.5 Super VL
50.2 overall · $0.237 / 1M
z-ai
DeepSeek V4.1 Flash vs GLM 5.3 Flash
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minimax
DeepSeek V4.1 Flash vs MiniMax M3.1 Flash
66.9 overall · $0.131 / 1M
DeepSeek V4.1 Flash vs Gemma 4 31B
38.7 overall · $0.250 / 1M
DeepSeek V4.1 Flash FAQ
How much does DeepSeek V4.1 Flash cost?
DeepSeek V4.1 Flash lists at $0.051 per 1M input tokens and $0.567 per 1M output tokens, with cached input reads at $0.018 per 1M. A RAG assistant handling 100K requests a month (8K tokens in, 600 out) comes to about $61.62 at list price.
What is the context window of DeepSeek V4.1 Flash?
DeepSeek V4.1 Flash accepts up to 1,048,576 tokens of context and can return up to 943,718 output tokens per response.
Does DeepSeek V4.1 Flash support tool calling?
Yes — DeepSeek V4.1 Flash supports tool (function) calling and exposes extended reasoning. It accepts text, image input.
How does DeepSeek V4.1 Flash score on benchmarks?
LiveBench has not published a run for DeepSeek V4.1 Flash yet. Until it does, compare it on price and specs, or run your own evaluation on your own tasks.
What is the API model ID for DeepSeek V4.1 Flash?
On OpenRouter the model ID is "deepseek/deepseek-v4.1-flash". It was listed on Sep 10, 2026.
More from deepseek
How these numbers are produced
- Price and specs — provider list data from OpenRouter, refreshed every 15 minutes. “Blended” is a 3:1 input:output mix.
- Scores and ranks — LiveBench release 2026-10-25. Ranks count only models that have a published run; a blank means “not evaluated”, never “bad”.
- Cost per point — the measured dollars LiveBench spent on the run, divided by the score it earned.
Published benchmarks rank models on someone else's tasks. Before committing, see LLM & agent evaluation for building an eval on your own.