Side-by-side comparison · models

DeepSeek V4.1 Flash 1017 vs DeepSeek V4 Pro (Thinking)

What we have checked about each, line by line. Every value shows where it came from and when we last confirmed it.

Models

DeepSeek V4.1 Flash 1017

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name.

104 checked values

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Models

DeepSeek V4 Pro (Thinking)

Flagship DeepSeek model for coding, reasoning, and agentic work.

0 checked values

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Checked facts

Line by line

DeepSeek V4.1 Flash 1017 vs DeepSeek V4 Pro (Thinking), compared on checked facts
Measure	DeepSeek V4.1 Flash 1017	DeepSeek V4 Pro (Thinking)
Input price	$0.0060 per million tokensChecked 8 Nov 2026OpenRouter models API	Not checked yet
Output price	$0.500 per million tokensChecked 8 Nov 2026OpenRouter models API	Not checked yet
Price on atlas-cloud	$0.0039 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on atlas-cloud	$0.195 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on atlas-cloud	$0.780 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on baidu	$0.0021 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on baidu	$0.098 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on baidu	$0.394 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on baseten	$0.0070 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on baseten	$0.300 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on baseten	$1.20 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on cloudflare	$0.0030 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on cloudflare	$0.100 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on cloudflare	$0.600 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on cohere	$0.0060 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on cohere	$0.195 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on cohere	$0.660 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on coreweave	$0.0060 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on coreweave	$0.300 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on coreweave	$1.20 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on crusoe	$0.0070 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on crusoe	$0.290 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on crusoe	$1.20 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on decart	$0.0025 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on decart	$0.123 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on decart	$0.492 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on deepinfra	$0.0024 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on deepinfra	$0.078 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on deepinfra	$0.235 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on deepseek	$0.0030 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on deepseek	$0.150 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on deepseek	$0.600 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on dekallm	$0.0060 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on dekallm	$0.180 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on dekallm	$0.680 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on digitalocean	$0.0060 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on digitalocean	$0.180 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on digitalocean	$0.720 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on fireworks	$0.0042 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on fireworks	$0.210 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on fireworks	$0.840 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on gmicloud	$0.0036 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on gmicloud	$0.180 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on gmicloud	$0.720 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on inference-net	$0.0080 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on inference-net	$0.080 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on inference-net	$0.550 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on ionstream	$0.011 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on ionstream	$0.165 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on ionstream	$0.495 per million output tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on makora	$0.0060 per million cached input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Price on makora	$0.150 per million input tokensChecked 7 Nov 2026OpenRouter models API	Not checked yet
Latest version	deepseek/deepseek-v4.1-flash-20261017Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms)	1,220Checked 7 Nov 2026Artificial Analysis	Not checked yet
Time to first token (ms) on atlas-cloud	4,055Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on baidu	1,605Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on baseten	449Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on cloudflare	1,827Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on cohere	656Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on coreweave	571Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on crusoe	452Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on decart	1,165Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on deepinfra	2,133Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on deepseek	1,092Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on dekallm	2,145Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on digitalocean	821Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on fireworks	2,010Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on gmicloud	934Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on inference-net	323Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on ionstream	1,483Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on makora	803Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on mistralai	1,751Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on modal	807Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on modelrun	977Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on morph	631Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on near-ai	759Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on nebius	1,258Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on novita	1,920Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on open-inference	854Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on parasail	670Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on phala	1,733Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on prime-intellect	1,089Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on qwen	887Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on reka	1,062Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on relace	715Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on sail-research	1,190Checked 2 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on siliconflow	923Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on stepfun	1,306Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on streamlake	1,629Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on together	283Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on venice	1,260Checked 7 Nov 2026OpenRouter models API	Not checked yet
Time to first token (ms) on wafer	387Checked 7 Nov 2026OpenRouter models API	Not checked yet
Output speed (tokens a second)	162.2Checked 7 Nov 2026Artificial Analysis	Not checked yet
Tokens served on OpenRouter in a day	7T (for 7 Nov 2026)Checked 8 Nov 2026OpenRouter model activity (741 of 741 series)	Not checked yet
Tool calls on OpenRouter in a day	67.5M (for 7 Nov 2026)Checked 8 Nov 2026OpenRouter model activity (741 of 741 series)	Not checked yet
Artificial Analysis Intelligence Index	28.6Checked 8 Nov 2026Artificial Analysis via OpenRouter	Not checked yet
Design Arena rating (Elo)	1,356Checked 8 Nov 2026Design Arena via OpenRouter	Not checked yet
Gpqa diamond	93.2% (for 17 Oct 2026)Checked 24 Oct 2026Epoch AI (CC BY 4.0)	Not checked yet
Frontiermath tiers 1 3 v2 private	71.2% (for 17 Oct 2026)Checked 24 Oct 2026Epoch AI (CC BY 4.0)	Not checked yet
Simpleqa verified	42.5% (for 17 Oct 2026)Checked 24 Oct 2026Epoch AI (CC BY 4.0)	Not checked yet
Chess puzzles	46% (for 17 Oct 2026)Checked 24 Oct 2026Epoch AI (CC BY 4.0)	Not checked yet
Frontiermath tier 4 v2 private	46.3% (for 17 Oct 2026)Checked 24 Oct 2026Epoch AI (CC BY 4.0)	Not checked yet
Mystery game puzzles	49% (for 17 Oct 2026)Checked 24 Oct 2026Epoch AI (CC BY 4.0)	Not checked yet
Otis mock aime 2024 2025	99.4% (saturated benchmark: the top models all score near the ceiling) (for 17 Oct 2026)Checked 24 Oct 2026Epoch AI (CC BY 4.0)	Not checked yet

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