What the vendor claims, next to what independent boards measured. The two are never mixed in one column.
Source: OpenRouter, as of Oct 28, 09:19 UTC. Model page on OpenRouter
Quoted word for word from the vendor's own launch post or model card. Claims, not measurements.
No vendor claims recorded yet. They come from launch posts and model cards the Drops covered.
Measured by independent sources (Epoch AI, LMArena, OpenRouter's benchmark runs, τ²-bench, Vectara), not by the vendor. "Listed as" is the source's own name for the model, so you can check our match.
| Board | Result | Rank |
|---|---|---|
| Epoch AI · GPQA diamondListed as: deepseek-v4.1-flash-1017_maxSource: Epoch AI (CC BY), as of Oct 28, 2026. Source | 93.2%Accuracy | 21 |
| Epoch AI · FrontierMath-Tiers-1-3-v2-PrivateListed as: deepseek-v4.1-flash-1017_maxSource: Epoch AI (CC BY), as of Oct 28, 2026. Source | 71.2%Accuracy | 28 |
| Epoch AI · FrontierMath-Tier-4-v2-PrivateListed as: deepseek-v4.1-flash-1017_maxSource: Epoch AI (CC BY), as of Oct 28, 2026. Source | 46.3%Accuracy | 28 |
| Epoch AI · OTIS Mock AIME 2024-2025Listed as: deepseek-v4.1-flash-1017_maxSource: Epoch AI (CC BY), as of Oct 28, 2026. Source | 99.4%Accuracy | 16 |
| Epoch AI · Chess PuzzlesListed as: deepseek-v4.1-flash-1017_maxSource: Epoch AI (CC BY), as of Oct 28, 2026. Source | 46.0%Accuracy | 26 |
| Epoch AI · Mystery Game PuzzlesListed as: deepseek-v4.1-flash-1017_maxSource: Epoch AI (CC BY), as of Oct 28, 2026. Source | 49.0%Accuracy | 15 |
| OpenRouter · GPQA DiamondListed as: DeepSeek V4.1 Flash 1017via DeepInfra, the most accurate providerSource: OpenRouter (openrouter.ai), licensed under CC BY 4.0, as of Oct 28, 2026. Source | 92.5%Accuracy | 20 |
| OpenRouter · GPQA Diamond: cost per taskListed as: DeepSeek V4.1 Flash 1017via DeepInfra, the most accurate providerLower is better on this board.Source: OpenRouter (openrouter.ai), licensed under CC BY 4.0, as of Oct 28, 2026. Source | $0.0057Cost per task | 4 |
| OpenRouter · GPQA Diamond: time per taskListed as: DeepSeek V4.1 Flash 1017via DeepInfra, the most accurate providerLower is better on this board.Source: OpenRouter (openrouter.ai), licensed under CC BY 4.0, as of Oct 28, 2026. Source | 222 sTime per task | 41 |
| OpenRouter · τ²-bench airlineListed as: DeepSeek V4.1 Flash 1017via Alibaba, the most accurate providerSource: OpenRouter (openrouter.ai), licensed under CC BY 4.0, as of Oct 28, 2026. Source | 78.7%Accuracy | 8 |
| OpenRouter · τ²-bench airline: cost per taskListed as: DeepSeek V4.1 Flash 1017via Alibaba, the most accurate providerLower is better on this board.Source: OpenRouter (openrouter.ai), licensed under CC BY 4.0, as of Oct 28, 2026. Source | $0.029Cost per task | 13 |
| OpenRouter · τ²-bench airline: time per taskListed as: DeepSeek V4.1 Flash 1017via Alibaba, the most accurate providerLower is better on this board.Source: OpenRouter (openrouter.ai), licensed under CC BY 4.0, as of Oct 28, 2026. Source | 149 sTime per task | 17 |
OpenRouter's list price per 1M tokens in each of our snapshots.
Changed 11 times across our 22 snapshots.
| Snapshot | Input $/1M | Output $/1M |
|---|---|---|
| Oct 28, 09:22 UTC | $0.3 | $1.2 |
| Oct 27, 16:03 UTC | $0.15 | $0.6 |
| Oct 27, 04:03 UTC | $0.3 | $1.2 |
| Oct 26, 16:04 UTC | $0.15 | $0.6 |
| Oct 26, 04:03 UTC | $0.3 | $1.2 |
| Oct 25, 16:04 UTC | $0.15 | $0.6 |
| Oct 25, 06:03 UTC | $0.15 | $0.6 |
| Oct 24, 15:04 UTC | $0.15 | $0.6 |
| Oct 24, 03:03 UTC | $0.15 | $0.6 |
| Oct 23, 15:03 UTC | $0.15 | $0.6 |
| Oct 23, 03:04 UTC | $0.3 | $1.2 |
| Oct 22, 15:03 UTC | $0.15 | $0.6 |
| Oct 22, 05:04 UTC | $0.15 | $0.6 |
| Oct 21, 15:03 UTC | $0.15 | $0.6 |
| Oct 21, 03:02 UTC | $0.3 | $1.2 |
| Oct 20, 15:04 UTC | $0.15 | $0.6 |
| Oct 20, 03:03 UTC | $0.3 | $1.2 |
| Oct 19, 15:04 UTC | $0.15 | $0.6 |
| Oct 19, 10:50 UTC | $0.15 | $0.6 |
| Oct 18, 15:03 UTC | $0.15 | $0.6 |
| Oct 18, 03:05 UTC | $0.15 | $0.6 |
| Oct 17, 15:03 UTC | $0.15 | $0.6 |
Source: OpenRouter, as of Oct 28, 09:22 UTC
DeepSeek's MIT-licensed V4.1 Flash 1017 has 3013 likes and 85275 downloads on Hugging Face. OpenRouter lists it at $0.3 in and $1.2 out per 1M tokens with a 1048576-token context.
Why it matters: Max Woolf counts 29 providers hosting the 1017 variant on OpenRouter, up from 13 for DeepSeek V4 Flash in May, which he says adds price pressure.
From Drop #047 · Mon, Oct 26 · MorningDeepSeek posted on X that V4.1 Flash 1017 is live on its website, app and API. OpenRouter lists it at $0.15 in and $0.6 out per 1M tokens with a 1048576-token context; two HN threads drew 425 and 307 points.
Why it matters: A low-priced model with a long context is worth a test run, but the only early tests we have are X posts, and they disagree.
From Drop #030 · Sat, Oct 17 · Evening