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AI model reference · 2026

DeepSeek V4 Flash 0423

DeepSeek: DeepSeek V4 Flash 0423 logoDeepSeekModel details, evidence, and API facts

DeepSeek V4 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window.

Text generation
Reasoning
Provider endpoint accepts tool parameters
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Context window
1,048,576 tokens
Maximum output
384,000 tokens
Base provider API input
$0.0531 / 1M tokens
Base provider API rate
Published evidence
2 benchmarks, 1 Arena result

Overview

About DeepSeek V4 Flash 0423

A concise catalog overview. Technical limits and published evaluation evidence are listed separately below.

DeepSeek V4 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window.

text
reasoning

Published evaluations

Benchmark results

Only results mapped to this exact model and backed by a named source appear here. Different evaluation protocols are not treated as interchangeable.

Source-backed benchmark results for DeepSeek V4 Flash 0423
BenchmarkScoreEvaluation detailsSource
DeepSWE 1.1A long-horizon software-engineering benchmark with 113 original tasks graded by hand-written tests.53.0%±4Pass@1Version: DeepSWE 1.1 · Split: 113 tasks across 91 repositories · Harness: mini-swe-agent · Reasoning effort: maxProtocol note: All models use the same harness. Cost, output-token, and step counts are retained per result as protocol context.; Confidence interval: ±4Methodology DataCurveBenchmark owner
LiveBenchA contamination-resistant benchmark refreshed on a fixed release cadence. Scores from different LiveBench releases must never be compared as the same protocol.65.5%Mean of category averagesVersion: LiveBench 2026-06-25 · Split: 2026-06-25 release, 23 tasks across seven categoriesProtocol note: Overall is the mean of category averages. This protocol is not comparable with the 2026-01-08 release.Methodology LiveBenchBenchmark owner

Human preference

Arena results

Arena scores come from blind human preference votes. They are reported separately from task benchmarks and are not used as substitutes for missing benchmark results.

Arena results for DeepSeek V4 Flash 0423
CategoryScoreRankVotesStatus
Arena TextBlind human preference score for text responses.1,436±4#8649,001Published

Technical reference

Specifications and API facts

Technical limits and reference provider prices come from the current catalog unless a reviewed external source is listed. Missing values stay marked as unavailable.

Model
Provider
DeepSeek
Release date
Not available in reviewed sources
Catalog added
Apr 24, 2026
Context window
1,048,576 tokens
Maximum output
384,000 tokens
Knowledge cutoff
Not available in reviewed sources
License
Not available in reviewed sources
Capabilities and API
Input types
Text
Output types
Text
Reasoning
Supported
Provider endpoint tool parameters
Accepts tool parameters
Base provider API input
$0.0531 / 1M tokens
Base provider cached input
$0.0106 / 1M tokens
Base provider API output
$0.1061 / 1M tokens

These are reference provider API rates, not Writingmate checkout charges. Access in Writingmate follows the allowances of your Writingmate plan.

Provenance

Sources and update status

Source links are attached to the facts and evaluations they support. Catalog-only values are not presented as independently verified claims.

Evidence last updated Aug 23, 2026.

Catalog record updated Apr 24, 2026.

Catalog-added dates describe when a model entered the catalog, not necessarily its public release date.

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