Pairwise benchmark snapshot · Aug 16, 2026

DeepSeek V4 Flash vs GLM-5.3 benchmark

Name: DeepSeek V4 Flash vs GLM-5.3 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares DeepSeek V4 Flash (DeepSeek) and GLM-5.3 (Zhipu) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, GLM-5.3 is ahead by 68 points (1,558 vs 1,490; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, GLM-5.3 resolves 76.4% versus 71.2% (seed-bootstrap (Aug 16, 2026)). DeepSeek V4 Flash streams faster (142 tok/s) while DeepSeek V4 Flash is the cheaper output token ($0.28/1M). DeepSeek V4 Flash has the larger context window (1M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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DeepSeek

DeepSeek V4 Flash

DeepSeek Jul 31 2026 price-performance SKU. Public listings put it near $0.14/$0.28 per 1M tokens.

Elo 1,490$0.28/1M out

Zhipu

GLM-5.3

Z.ai Aug 14 2026 post-train of the GLM-5.2 744B base. Coding-plan live; open weights promised after a two-week safety review (z.ai/blog/glm-5.3).

Elo 1,558$1.8/1M out

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Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

DeepSeek V4 Flash (5)vsGLM-5.3 (5)

DeepSeek V4 Flash: 5W (50%)Overall: Even matchupGLM-5.3: 5W (50%)

← DeepSeek V4 FlashGLM-5.3 →

GLM-5.3 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,490vs1,558

Coding Elo

1,516vs1,586

SWE-bench

71.2%vs76.4%

LiveBench

67.8%vs70.8%

GPQA Diamond

81.6%vs83.2%

DeepSeek V4 Flash: 0WGLM-5.3: 5W

DeepSeek V4 Flash (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

142 tok/svs90 tok/s

Time to first token

165 msvs255 ms

DeepSeek V4 Flash: 2WGLM-5.3: 0W

DeepSeek V4 Flash (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$0.28/1Mvs$1.8/1M

Input price

$0.14/1Mvs$0.5/1M

Context window

1Mvs200k

DeepSeek V4 Flash: 3WGLM-5.3: 0W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageEven 3–3

Preference Elo

GLM-5.3

68 pts advantage

Throughput Speed

DeepSeek V4 Flash

52 tok/s faster

Price Efficiency

DeepSeek V4 Flash

$1.52/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,490

EloHigh is better

1,558+5%

Code Elo

High is better

1,516

Code EloHigh is better

1,586+5%

LiveBench

High is better

67.8%

LiveBenchHigh is better

70.8%+4%

SWE-bench

High is better

71.2%

SWE-benchHigh is better

76.4%+7%

GPQA

High is better

81.6%

GPQAHigh is better

83.2%+2%

TTFT

Low is better

+55%165 ms

TTFTLow is better

255 ms

Speed

High is better

+58%142 tok/s

SpeedHigh is better

90 tok/s

In $

Low is better

+257%$0.14/1M

In $Low is better

$0.5/1M

Out $

Low is better

+543%$0.28/1M

Out $Low is better

$1.8/1M

Context

High is better

+424%1M

ContextHigh is better

200k

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 80% with DeepSeek V4 Flash

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

DeepSeek V4 Flash$9.10 / mo

In: $4.90Out: $4.20

GLM-5.3$44.50 / mo

In: $17.50Out: $27.00

Estimated Cost Delta

DeepSeek V4 Flash is estimated to save $35.40/month ($425/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
GLM-5.3:Pick GLM-5.3 when repo-level coding accuracy is the constraint.
2
DeepSeek V4 Flash:Pick DeepSeek V4 Flash when you are optimizing output cost.
3
DeepSeek V4 Flash:Pick DeepSeek V4 Flash when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsGLM-5.3

Higher SWE-bench (76.4%).

High-volume chatDeepSeek V4 Flash

Lower output list price ($0.28/1M).

Voice / low-latency UIDeepSeek V4 Flash

Lower TTFT (165 ms).

Long-document RAGDeepSeek V4 Flash

Larger window (1M).

Screenshots / visionGLM-5.3

GLM-5.3 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	GLM-5.3	Higher SWE-bench (76.4%).
High-volume chat	DeepSeek V4 Flash	Lower output list price ($0.28/1M).
Voice / low-latency UI	DeepSeek V4 Flash	Lower TTFT (165 ms).
Long-document RAG	DeepSeek V4 Flash	Larger window (1M).
Screenshots / vision	GLM-5.3	GLM-5.3 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news

launchAug 14, 2026

GLM-5.3 (Aug 14): Z.ai post-train of the 5.2 744B base

Coding-plan live; open weights promised after a two-week safety review. Newest Zhipu row.

priceJul 31, 2026

DeepSeek V4 Flash (Jul 31): the $0.14/$0.28 price-performance SKU

Public listings put Flash near $0.14/$0.28 per 1M. That is a batch SKU, not a chatbot crown.

launchJun 18, 2026

GLM-5.2 remains the prior Zhipu flagship for upgrade pairs

Strong Chinese/English coding. 5.3 is the new row; 5.2 stays so the delta is visible.

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LIVE

DeepSeek

DeepSeek V4 Flash

Elo 1,490

LiveBench67.8%

SWE-bench71.2%

Speed142 tok/s

Output cost$0.28/1M

Zhipu

GLM-5.3

Elo 1,558

LiveBench70.8%

SWE-bench76.4%

Speed90 tok/s

Output cost$1.8/1M

Frequently Asked Questions

Which is better overall, DeepSeek V4 Flash or GLM-5.3?: GLM-5.3 has the higher preference Elo in our latest snapshot (1,558). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, DeepSeek V4 Flash or GLM-5.3?: GLM-5.3 leads SWE-bench at 76.4% vs 71.2%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: DeepSeek V4 Flash output tokens are $0.28/1M versus $1.8/1M. Input prices and retry rates still move the real bill.
Which is faster, DeepSeek V4 Flash or GLM-5.3?: DeepSeek V4 Flash has the lower time-to-first-token (165 ms vs 255 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: DeepSeek V4 Flash accepts 1M tokens versus 200k.
Can I self-host either model?: DeepSeek V4 Flash is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. DeepSeek V4 Flash and GLM-5.3 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All DeepSeek V4 Flash matchups →|All GLM-5.3 matchups →

DeepSeek V4 Flash vs DeepSeek V4 Pro (previous deepseek)GLM-5.3 vs GLM-5.2 (previous glm)GLM-5.2 vs DeepSeek V4 Flash DeepSeek V4 Pro vs GLM-5.3 Gemini 2.0 Flash Thinking vs DeepSeek V4 Flash Gemini 3 Flash vs DeepSeek V4 Flash

DeepSeek V4 Flash vs GLM-5.3 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

DeepSeek V4 Flash (5)vsGLM-5.3 (5)

DeepSeek V4 Flash: 5W (50%)Overall: Even matchupGLM-5.3: 5W (50%)

← DeepSeek V4 FlashGLM-5.3 →

GLM-5.3 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,490vs1,558

Coding Elo

1,516vs1,586

SWE-bench

71.2%vs76.4%

LiveBench

67.8%vs70.8%

GPQA Diamond

81.6%vs83.2%

DeepSeek V4 Flash: 0WGLM-5.3: 5W

DeepSeek V4 Flash (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

142 tok/svs90 tok/s

Time to first token

165 msvs255 ms

DeepSeek V4 Flash: 2WGLM-5.3: 0W

DeepSeek V4 Flash (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$0.28/1Mvs$1.8/1M

Input price

$0.14/1Mvs$0.5/1M

Context window

1Mvs200k

DeepSeek V4 Flash: 3WGLM-5.3: 0W

Recommended Workload Routing

Repo / coding agentsGLM-5.3

Higher SWE-bench (76.4%).

High-volume chatDeepSeek V4 Flash

Lower output list price ($0.28/1M).

Voice / low-latency UIDeepSeek V4 Flash

Lower TTFT (165 ms).

Long-document RAGDeepSeek V4 Flash

Larger window (1M).

Screenshots / visionGLM-5.3

GLM-5.3 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	GLM-5.3	Higher SWE-bench (76.4%).
High-volume chat	DeepSeek V4 Flash	Lower output list price ($0.28/1M).
Voice / low-latency UI	DeepSeek V4 Flash	Lower TTFT (165 ms).
Long-document RAG	DeepSeek V4 Flash	Larger window (1M).
Screenshots / vision	GLM-5.3	GLM-5.3 is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, DeepSeek V4 Flash or GLM-5.3?

GLM-5.3 has the higher preference Elo in our latest snapshot (1,558). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, DeepSeek V4 Flash or GLM-5.3?

GLM-5.3 leads SWE-bench at 76.4% vs 71.2%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

DeepSeek V4 Flash output tokens are $0.28/1M versus $1.8/1M. Input prices and retry rates still move the real bill.

Which is faster, DeepSeek V4 Flash or GLM-5.3?

DeepSeek V4 Flash has the lower time-to-first-token (165 ms vs 255 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

DeepSeek V4 Flash accepts 1M tokens versus 200k.

Can I self-host either model?

DeepSeek V4 Flash is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. DeepSeek V4 Flash and GLM-5.3 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

GLM-5.3

DeepSeek V4 Flash

DeepSeek V4 Flash

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

GLM-5.3 (Aug 14): Z.ai post-train of the 5.2 744B base

DeepSeek V4 Flash (Jul 31): the $0.14/$0.28 price-performance SKU

GLM-5.2 remains the prior Zhipu flagship for upgrade pairs

Cast Your Matchup Vote

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CompareLLM Matrix

DeepSeek V4 Flash

GLM-5.3

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

GLM-5.3

DeepSeek V4 Flash

DeepSeek V4 Flash

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

GLM-5.3 (Aug 14): Z.ai post-train of the 5.2 744B base

DeepSeek V4 Flash (Jul 31): the $0.14/$0.28 price-performance SKU

GLM-5.2 remains the prior Zhipu flagship for upgrade pairs

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

DeepSeek V4 Flash

GLM-5.3

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons