[DeepSeek](/ai-gateway/models/labs/deepseek) # Deepseek V4 Flash 0731 Deepseek V4 Flash 0731 is a dated checkpoint of DeepSeek's V4 Flash weights, with notably stronger agentic capabilities than the April preview. Deepseek V4 Flash 0731 scores 82.7 on Terminal-Bench, pairs a hybrid attention architecture with a context window of 1.0M tokens, and routes across Fireworks, DeepSeek, Baseten, DeepInfra, Novita AI, Alibaba Cloud, Wafer, Runware, RunInfra, GMICloud on AI Gateway. Your use is subject to DeepSeek's [Terms](https://cdn.deepseek.com/policies/en-US/deepseek-terms-of-use.html) & [Privacy](https://cdn.deepseek.com/policies/en-US/deepseek-privacy-policy.html) Policies. ReasoningTool UseImplicit Caching [Use with AI Gateway](https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Futm_source%3Dgateway-model-page%26utm_campaign%3Dai-gateway-models&title=Get+Started+with+Vercel+AI+Gateway) [View docs](https://vercel.com/docs/ai-gateway) AI SDKChat CompletionsMessagesResponses ``` 1import { streamText } from 'ai' 2 3const result = streamText({ 4 model: 'deepseek/deepseek-v4-flash-0731', 5 prompt: 'Why is the sky blue?' 6}) ``` [Read docs](https://vercel.com/docs/ai-gateway/sdks-and-apis/ai-sdk) [Overview](/ai-gateway/models/deepseek-v4-flash-0731) [API](/ai-gateway/models/deepseek-v4-flash-0731/api) [About](/ai-gateway/models/deepseek-v4-flash-0731/about) [Providers](/ai-gateway/models/deepseek-v4-flash-0731/providers) [Throughput](/ai-gateway/models/deepseek-v4-flash-0731/throughput) [Latency](/ai-gateway/models/deepseek-v4-flash-0731/latency) [Uptime](/ai-gateway/models/deepseek-v4-flash-0731/uptime) [Status](/ai-gateway/models/deepseek-v4-flash-0731/status) [Similar](/ai-gateway/models/deepseek-v4-flash-0731/similar) [FAQ](/ai-gateway/models/deepseek-v4-flash-0731/faq) ## [Copy link to heading](#playground)Playground Try out Deepseek V4 Flash 0731 by DeepSeek. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days. ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75)Deepseek V4 Flash 0731 ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=96&q=75) Deepseek V4 Flash 0731 ## [Copy link to heading](#providers)Providers Route requests across multiple providers. Copy a provider slug to set your preference. Visit the [docs](/docs/ai-gateway/provider-options) for more info. Using a provider means you agree to their terms, listed under Legal. Token prices are 2× during 01:00–04:00 and 06:00–10:00 UTC. Listed prices are the off-peak rate. | Provider | | --- | | Context | Max Output | Latency | Throughput | Input | Output | Cache | Web Search | Capabilities | ZDR | No Training | Release Date | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | ![fireworks logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Ffireworks.png&w=48&q=75) [Fireworks](/ai-gateway/models/providers/fireworks) Legal:[Terms](https://fireworks.ai/terms-of-service)•[Privacy](https://fireworks.ai/privacy-policy) | 1M | 384K | 1.3s | 119tps | $0.14/M | $0.28/M | Read:$0.03/M Write:— | — | | | | 07/31/2026 | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) [DeepSeek](/ai-gateway/models/providers/deepseek) Legal:[Terms](https://cdn.deepseek.com/policies/en-US/deepseek-terms-of-use.html)•[Privacy](https://cdn.deepseek.com/policies/en-US/deepseek-privacy-policy.html) | 1M | 384K | 1.0s | 97tps | $0.22/M | $0.66/M | Read:$0.01/M Write:— | — | | | | 07/31/2026 | | | ![baseten logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fbaseten.png&w=48&q=75) [Baseten](/ai-gateway/models/providers/baseten) Legal:[Terms](https://www.baseten.co/terms-and-conditions/)•[Privacy](https://www.baseten.co/privacy-policy/) | 1M | 384K | 1.0s | 204tps | $0.13/M | $0.26/M | Read:$0.03/M Write:— | — | | | | 07/31/2026 | | | ![deepinfra logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepinfra.png&w=48&q=75) [DeepInfra](/ai-gateway/models/providers/deepinfra) Legal:[Terms](https://deepinfra.com/terms)•[Privacy](https://deepinfra.com/privacy) | 1M | 384K | 1.0s | 63tps | $0.09/M | $0.18/M | Read:$0.02/M Write:— | — | | | | 07/31/2026 | | | ![novita logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fnovita.png&w=48&q=75) [Novita AI](/ai-gateway/models/providers/novita) Legal:[Terms](https://novita.ai/legal/terms-of-service)•[Privacy](https://novita.ai/legal/privacy-policy) | 1M | 393K | 0.8s | 89tps | $0.14/M | $0.28/M | Read:$0.03/M Write:— | — | | | | 07/31/2026 | | | ![alibaba logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Falibaba%2520cloud.png&w=48&q=75) [Alibaba Cloud](/ai-gateway/models/providers/alibaba) Legal:[Terms](https://www.alibabacloud.com/help/en/legal/latest/alibaba-cloud-international-website-product-terms-of-service-v-3-8-0)•[Privacy](https://www.alibabacloud.com/help/en/legal/latest/alibaba-cloud-international-website-privacy-policy) | 1M | 384K | 2.3s | 123tps | $0.20/M | $0.40/M | Read:$0.04/M Write:— | — | | | | 07/31/2026 | | | ![wafer logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fwafer.png&w=48&q=75) [Wafer](/ai-gateway/models/providers/wafer) Legal:[Terms](https://www.wafer.ai/terms)•[Privacy](https://www.wafer.ai/privacy-policy) | 1M | 1M | 2.4s | 325tps | $0.28/M | $0.56/M | Read:$0.07/M Write:— | — | | | | 07/31/2026 | | | ![runware logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Frunware.png%3Fv%3D1784667881405&w=48&q=75) [Runware](/ai-gateway/models/providers/runware) Legal:[Terms](https://runware.ai/terms)•[Privacy](https://runware.ai/privacy) | 1M | 384K | 2.5s | 57tps | $0.08/M | $0.15/M | Read:$0.01/M Write:— | — | | | | 07/31/2026 | | | ![runinfra logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fruninfra.png%3Fv%3D1786910657446&w=48&q=75) [RunInfra](/ai-gateway/models/providers/runinfra) Legal:[Terms](https://runinfra.ai/terms-of-service)•[Privacy](https://runinfra.ai/privacy-policy) | | | 0.3s | | $0.13/M | $0.27/M | Read:$0.01/M Write:— | — | | | | 07/31/2026 | | | ![gmicloud logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fgmicloud.png%3Fv%3D1785888489595&w=48&q=75) [GMICloud](/ai-gateway/models/providers/gmicloud) Legal:[Terms](https://www.gmicloud.ai/en/terms-and-conditions)•[Privacy](https://www.gmicloud.ai/en/privacy-policy) | 1M | 384K | 2.3s | 67tps | $0.13/M | $0.25/M | Read:$0.03/M Write:— | — | | | | 07/31/2026 | | ## [Copy link to heading](#throughput)Throughput24 hours 1W 1D P50 throughput on live AI Gateway traffic, in tokens per second (TPS). Visit the [docs](https://vercel.com/docs/ai-gateway/models-and-providers/metrics) for more info. ## [Copy link to heading](#latency)Latency24 hours 1W 1D P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the [docs](https://vercel.com/docs/ai-gateway/models-and-providers/metrics) for more info. ## [Copy link to heading](#uptime)Uptime24 hours 1W 1D 1H Direct request success rate on AI Gateway and per-provider. Visit the [docs](https://vercel.com/docs/ai-gateway/models-and-providers/uptime) for more info. 1W 1D 1H ## [Copy link to heading](#more-models-by-deepseek)More models by DeepSeek All Text Code | Model | | --- | | Context | Latency | Throughput | Input | Output | Cache | Web Search | Capabilities | Providers | ZDR | No Training | Release Date | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) [deepseek/deepseek-v4-pro-0813](/ai-gateway/models/deepseek-v4-pro-0813) | 1M | 0.5s | 179tps | $0.66/M | $1.98/M | Read:$0.02/M Write:— | — | | ![baseten logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fbaseten.png&w=48&q=75) ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) ![fireworks logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Ffireworks.png&w=48&q=75) +1 | | | 08/12/2026 | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) [deepseek/deepseek-v4-flash](/ai-gateway/models/deepseek-v4-flash) | 1M | 0.4s | 197tps | $0.09/M | $0.18/M | Read:$0.01/M Write:— | — | | ![alibaba logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Falibaba%2520cloud.png&w=48&q=75) ![azure logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fazure.png&w=48&q=75) ![baseten logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fbaseten.png&w=48&q=75) +7 | | | 04/23/2026 | | | ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) [deepseek/deepseek-v4-pro](/ai-gateway/models/deepseek-v4-pro) | 1M | 0.4s | 155tps | $0.66/M | $1.98/M | Read:$0.02/M Write:— | — | | ![alibaba logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Falibaba%2520cloud.png&w=48&q=75) ![azure logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fazure.png&w=48&q=75) ![baseten logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fbaseten.png&w=48&q=75) +5 | | | 04/23/2026 | | | ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) [deepseek/deepseek-v3.2](/ai-gateway/models/deepseek-v3.2) | 164K | 0.6s | 97tps | $0.28/M | $0.42/M | Read:$0.03/M Write:— | — | | ![bedrock logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Famazon%2520bedrock.png&w=48&q=75) ![deepinfra logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepinfra.png&w=48&q=75) ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) +1 | | | 12/01/2025 | | | ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) [deepseek/deepseek-v3.2-thinking](/ai-gateway/models/deepseek-v3.2-thinking) | 164K | 0.3s | 55tps | $0.26/M | $0.38/M | Read:$0.13/M Write:— | — | | ![bedrock logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Famazon%2520bedrock.png&w=48&q=75) ![deepinfra logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepinfra.png&w=48&q=75) ![novita logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fnovita.png&w=48&q=75) | | | 12/01/2025 | | | ![deepseek logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fdeepseek.png&w=48&q=75) [deepseek/deepseek-v3.1-terminus](/ai-gateway/models/deepseek-v3.1-terminus) | 131K | 4.5s | 31tps | $0.27/M | $1/M | Read:$0.14/M Write:— | — | | ![novita logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Fnovita.png&w=48&q=75) | | | 09/22/2025 | | ## [Copy link to heading](#about-deepseek-v4-flash-0731)About Deepseek V4 Flash 0731 Deepseek V4 Flash 0731 became available on AI Gateway on July 31, 2026 as a dated checkpoint of DeepSeek V4 Flash, the efficiency tier of DeepSeek's V4 generation. The V4 series arrived in April 2026 with two variants: V4 Pro for agentic coding, formal mathematical reasoning, and long-horizon workflows, and V4 Flash for high-volume, latency-sensitive work. V4 Flash performs close to V4 Pro on reasoning and holds up on simpler agent tasks at a smaller parameter size. This checkpoint carries the updated weights that followed the April preview, and the agentic gains are the reason to pin this checkpoint. On Terminal-Bench, a benchmark that measures how well a model completes real tasks in a terminal, Deepseek V4 Flash 0731 scores 82.7, up 25.8 points from 56.9 in the April preview. That lands directly on coding-agent work such as fixing failing tests in a repository and opening a pull request. The V4 architecture combines Compressed Sparse Attention (CSA) with Heavily Compressed Attention (HCA), and uses ManifoldConstrained Hyper-Connections (mHC) in place of standard residual connections. The combination targets efficient inference at the context window of 1.0M tokens. Maximum output is 1M tokens per response, which gives long reasoning chains and tool-call sequences room to finish in a single call. AI Gateway routes Deepseek V4 Flash 0731 across Fireworks, DeepSeek, Baseten, DeepInfra, Novita AI, Alibaba Cloud, Wafer, Runware, RunInfra, GMICloud, with retries and automatic failover. Provider coverage grew after the updated weights first shipped, so check the list on this page for who serves the checkpoint today. Prefer a specific provider by passing an `order` array under `providerOptions.gateway`, which is also how you route to a provider running a promotional rate while one is active. Set the model to `deepseek/deepseek-v4-flash-0731` in the AI SDK, Chat Completions API, Responses API, Messages API, or other API formats, from TypeScript or Python. Authenticate with an AI Gateway API key or OIDC token, so you don't need a separate DeepSeek platform account. AI Gateway mirrors provider pricing with no markup and adds no platform fee on inference, including for Bring Your Own Key requests. ## [Copy link to heading](#what-to-consider-when-choosing-a-provider)What To Consider When Choosing a Provider - Configuration: The `0731` suffix names a dated checkpoint. `deepseek/deepseek-v4-flash-0731` stays on that snapshot of the weights, while `deepseek/deepseek-v4-flash` picks up whatever DeepSeek ships as current. Pin the checkpoint when you need reproducible behavior across deploys and evaluation runs, and use the undated model ID when you want new weights automatically. - Configuration: Provider coverage differs between the two IDs, including which backing providers offer Zero Data Retention. Check the provider list on this page, and use the `order` option under `providerOptions.gateway` when you need traffic to prefer one provider. Individual providers sometimes run time-limited promotional rates that end on a set date, so read the pricing panel on this page rather than assuming a past rate still applies. - Zero Data Retention: Zero Data Retention is available for this model. It is offered on a per-provider and model basis. See the [documentation](https://vercel.com/docs/ai-gateway/security-and-compliance/zdr) for details. - Authentication: AI Gateway authenticates requests using an [API key](https://vercel.com/docs/ai-gateway/authentication-and-byok#api-key-authentication) or [OIDC token](https://vercel.com/docs/ai-gateway/authentication-and-byok#oidc-token-authentication). You do not need to manage provider credentials directly. ## [Copy link to heading](#when-to-use-deepseek-v4-flash-0731)When to Use Deepseek V4 Flash 0731 ### Best for - Pinned Production Behavior: A dated checkpoint holds model behavior steady across deploys and evaluation runs - Coding Agent Tasks: Terminal-Bench gains land on repository work such as fixing tests and opening pull requests - High-Volume Short-Form Traffic: Classification, routing, and extraction pipelines at efficiency-tier pricing - Long-Context Workloads: A context window of 1.0M tokens and up to 1M tokens output tokens cover large inputs - Provider-Controlled Routing: The `order` option pins traffic to a preferred provider for cost or compliance reasons ### Consider alternatives when - Automatic Weight Updates: DeepSeek V4 Flash tracks the current weights with no model ID change on your side - Deeper Reasoning Work: DeepSeek V4 Pro targets complex reasoning, multi-step problem solving, and agentic planning - Dedicated Reasoning Specialist: DeepSeek-R1 remains the open-weights option for extended chain-of-thought workloads ## [Copy link to heading](#conclusion)Conclusion Deepseek V4 Flash 0731 pins the V4 Flash checkpoint that carries the stronger agentic scores, at efficiency-tier pricing and a context window of 1.0M tokens. Pin Deepseek V4 Flash 0731 when reproducible behavior matters, and switch to `deepseek/deepseek-v4-flash` when you'd rather pick up new weights automatically.