Which DeepSeek V4 Flash conclusions hold up?

DeepSeek-V4-Flash: 0731 Benchmark Update and Harness Conditions

The official 0731 table reports Terminal Bench 2.1 82.7, DeepSWE 54.4, and Toolathlon Verified 70.3 under DeepSeek Harness minimal mode, max effort, top_p 0.95, and temperature 1.0.

Test/source conditions

0731 API; DeepSeek Harness minimal mode; max; top_p=0.95; temperature=1.0

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek-V4-Flash: Local Deployment, Quantization, and Agent Testing

MindStudio reports about 25–30 tokens/s on dual DGX Spark, estimates 168GB for 4-bit and 110GB for 3-bit, and still records live-data errors in two small projects.

Test/source conditions

Author field report; complete sample, harness, and repetition count were not disclosed

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Flash 0731 Benchmarks, Pricing & Speed (BenchLM)

BenchLM’s 0731 snapshot lists a 1M context window, Agentic 51.9, Coding 48.5, and Knowledge 61.1, with many scores attributed back to the official report.

Unverified: the original source could not be rechecked.

Test/source conditions

Dated tracking snapshot; independent harness was not disclosed

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

I Ran DeepSeek V4 Flash on 8 Agent Harnesses (Reddit r/DeepSeek)

A Reddit author compares eight harnesses on OpenRouter across 25 automation tasks: Pi Agent passes 66.7% versus OpenCode 46.7%, with about $0.028 versus $0.073 per successful task.

Test/source conditions

OpenRouter; eight harnesses; 25 automation tasks; method follows the linked post

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek-V4-Flash: 0731 Benchmark Update and Harness Conditions

The official 0731 table reports Terminal Bench 2.1 82.7, DeepSWE 54.4, and Toolathlon Verified 70.3 under DeepSeek Harness minimal mode, max effort, top_p 0.95, and temperature 1.0.

Test/source conditions

0731 API; DeepSeek Harness minimal mode; max; top_p=0.95; temperature=1.0

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek-V4-Flash: Local Deployment, Quantization, and Agent Testing

MindStudio reports about 25–30 tokens/s on dual DGX Spark, estimates 168GB for 4-bit and 110GB for 3-bit, and still records live-data errors in two small projects.

Test/source conditions

Author field report; complete sample, harness, and repetition count were not disclosed

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Flash 0731 Benchmarks, Pricing & Speed (BenchLM)

BenchLM’s 0731 snapshot lists a 1M context window, Agentic 51.9, Coding 48.5, and Knowledge 61.1, with many scores attributed back to the official report.

Unverified: the original source could not be rechecked.

Test/source conditions

Dated tracking snapshot; independent harness was not disclosed

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

I Ran DeepSeek V4 Flash on 8 Agent Harnesses (Reddit r/DeepSeek)

A Reddit author compares eight harnesses on OpenRouter across 25 automation tasks: Pi Agent passes 66.7% versus OpenCode 46.7%, with about $0.028 versus $0.073 per successful task.

Test/source conditions

OpenRouter; eight harnesses; 25 automation tasks; method follows the linked post

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

302.AI Benchmark Laboratory | Breaking the “Lightweight” Label: A Hands-on Test of DeepSeek-V4-Flash, a Low-Cost Challenger to Top-Tier Agents

The 302.AI lab positions Flash as a low-cost Agent candidate while mixing vendor figures with its own test material; the two evidence types must stay separate.

Test/source conditions

Independent lab article; full harness, sample, and repetitions remain source-specific

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Alters Everything We Knew About Price-Performance Math (Lightning AI)

Lightning AI reports an April 24, 2026 snapshot of about 60+ tokens/s and 79.0% SWE-bench Verified for Flash, with 1M context and persistent tool-loop reasoning as architectural context.

Test/source conditions

Lightning AI internal use; Pro/Flash and April 24, 2026 pricing are separate

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Flash at $0.112/M Output After the Price Increase (Reddit r/DeepSeek)

After the increase, a Reddit post relays InferX’s third-party quote of $0.056/M input and about $0.112/M output; this is a provider offer, not a controlled measurement.

Unverified: the original source could not be rechecked.

Test/source conditions

Source-specific client, task, and sample conditions; no unified controlled sample

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Flash doesn't like us? (Reddit r/opencodeCLI)

A user reports that changing 10 lines consumed 28% of quota after the increase, and a commit message raised it to 32%; no token ledger is supplied.

Unverified: the original source could not be rechecked.

Test/source conditions

OpenCode account experience after a price increase; no token ledger was provided

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Flash is a monster! Cheap & Good, and so fast (Reddit r/opencodeCLI)

An OpenCode user subjectively finds Flash cheap and fast enough to replace parts of a Claude/GPT workflow, while describing Pro as slower and costlier.

Test/source conditions

OpenCode personal workflow; task set, parameters, and repetitions were not disclosed

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Flash Just Drew a Pretty Brutal "Kill Line" on This Chart (Reddit r/LocalLLM)

Reddit interprets a historical Artificial Analysis chart as roughly a 50 index and about $0.03 per weighted task for Flash 0731.

Test/source conditions

Community chart interpretation based on an Artificial Analysis snapshot

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Flash Review (2026) — Specs, Tests & Speed

An unaffiliated site lists 284B/13B, 1M context, and prices as of July 25, 2026, and frames real-world consistency as “benchmark maxed.”

Unverified: the original source could not be rechecked.

Test/source conditions

Public review article; test configuration and freshness require rechecking

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Flash Third-Party Aggregator Data (Command Code / flaq.ai / OpenRouter / BenchLM Supplement)

Command Code, flaq, OpenRouter, and BenchLM aggregate model IDs, prices, and capability fields whose collection windows may differ.

Unverified: the original source could not be rechecked.

Test/source conditions

Aggregated model-card snapshot; source fields may mix collection windows

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4 Logic Evaluation

The Zhihu article focuses mainly on V4 Pro/family logic results; Flash appears only as family context and cannot be treated as a Flash test.

Test/source conditions

Public article focused mainly on V4 family/Pro logic results; Flash applicability is limited

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek V4-Flash/Pro Field Report: From Purchase to Practice, an Exceptional Price-to-Performance Experience with Chinese LLMs

The CSDN author documents credit purchase, API setup, code generation, and debugging while using V4-Flash and V4-Pro in one personal workflow.

Test/source conditions

Individual API purchase and coding report; task set, parameters, and repetitions were not fully disclosed

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

DeepSeek-V4-Flash Hands-on Experience: How a Powerful Model Can Actually Help You Get Work Done

The Cnblogs article frames stronger reasoning, coding, and Agent work and repeats a DeepSWE 7.3→54.4 change without publishing a reproduction protocol.

Test/source conditions

Source-specific client, task, and sample conditions; no unified controlled sample

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

Hands-on Test of DeepSeek V4's Agent Capabilities

The CowAgent author examines tool calls, long context, long-term memory, browser automation, and knowledge organization across six real scenarios.

Test/source conditions

CowAgent six-scenario field test; full sample and repetitions remain source-specific

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

Tested DeepSeek V4 Flash with Some Large Code-Change Evaluations (Reddit r/LocalLLaMA)

The author reports strong tool use and context management on large code-change evaluations, but publishes no task set, scores, version, or full traces.

Test/source conditions

Personal large-code-change observation; no unified controlled sample

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

Thank you, OpenCode! DeepSeek v4 Flash (Free) is just too good. (Reddit r/opencodeCLI)

An OpenCode user says the free Flash tier lasted about 5–6 hours before exhaustion and reset after roughly 7 hours.

Unverified: the original source could not be rechecked.

Test/source conditions

OpenCode free-tier account experience; quota rules were not independently checked

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

The Official DeepSeek V4-Flash Is Here! AI Developers Test It: "Fantastic" Pricing, Agent Capabilities Close to Top-Tier Models

Eastmoney relays developer cases: Hermes + Flash took about 40 seconds versus GPT + Codex at about 1:47, and another task used about 510K tokens and CNY 0.53.

Test/source conditions

Hermes/Pi Agent developer cases; tasks and timings were not controlled repeats

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

What Is Currently the Cheapest Good Alternative to DeepSeek V4 Flash? (Reddit r/hermesagent)

A Hermes Agent user seeks a cheaper alternative after the V4 price increase, focusing on quality, speed, caching, and free quotas; the post contains no uniform candidate test.

Unverified: the original source could not be rechecked.

Test/source conditions

Hermes Agent community discussion; no unified quality or cost experiment

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

What Is the DeepSeek “Kill Line”? A First-hand Review of DeepSeek-V4-Flash

Programmer Xiaohui explains Flash’s “kill line” with a price–capability framing; it is personal interpretation and source recap.

Test/source conditions

Personal price-performance interpretation; chart window and version follow the source

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

X (Twitter) Field-Test Feedback Summary: Real User Voices Before and After the Price Increase

This X roundup reuses the 0424/0731 pricing feedback and adds no independent task, sample, or billing data.

Unverified: the original source could not be rechecked.

Test/source conditions

X feedback summary citing 0424/0731; it is not an independent test

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

X user field test: Comparing the 0424 and 0731 versions, and the felt cost after the price increase (Wyq / ch1lam)

An X user prefers 0424 and says the 0731 increase worsened the cost experience for non-coding work; this is version-specific personal feedback.

Unverified: the original source could not be rechecked.

Test/source conditions

X field report comparing 0424 and 0731; no unified task or token ledger

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh

X User Reports: One Prompt Fixes Hypervisor Scheduling, Local GPUs Reverse-Engineer a Chrome Extension (jtregunna / 0xRaghuboi)

X posts report one prompt fixing hypervisor guest scheduling and another reverse-engineering a Chrome extension locally; neither provides a diff, tests, or full input.

Unverified: the original source could not be rechecked.

Test/source conditions

X single-case reports; full inputs and tests were not provided

Model version

DeepSeek V4 Flash; do not merge V4 Pro, 0424, 0731, or reasoning tiers unless the source explicitly does so

Collection boundary

Existing source note collected August 17–18, 2026; dynamic facts require refresh