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DeepSeek V4 Flash 0731 vs GPT-5.2-Codex

vs
GPT-5.2-Codex

OpenAI

91#24
Signal-by-Signal Comparison
SignalDeepSeek V4 Flash 0731DeltaGPT-5.2-Codex
Capabilities
67
-33
100
Pricing
100
+14
86
Context window size
96
+7
89
Recency
100
+5
95
Output Capacity
93
+8
85
Benchmarks
0
-89
89
Overall Result
4 wins
of 6
2 wins
DeepSeek V4 Flash 0731 wins 4 of 6 signals

Score History

Score History (25 data points)
DeepSeek V4 Flash 0731GPT-5.2-Codex
DeepSeek V4 Flash 0731

40

current score

Leader

GPT-5.2-Codex

right now

GPT-5.2-Codex

90.5

current score

LMMarketCap.com
Interactive Price Comparison
100Kcalls/month
1,000tokens (~1,333 chars)
500tokens (~667 chars)

DeepSeek V4 Flash 0731

DeepSeek

Best Value
Per request$0.000180
Daily$0.60
Monthly$18.00
Annual$216.00

GPT-5.2-Codex

OpenAI

Per request$0.008750
Daily$29.17
Monthly$875.00
Annual$10500.00

DeepSeek V4 Flash 0731 saves you $857.00/month

That's $10284.00/year compared to GPT-5.2-Codex at your current usage level of 100K calls/month.

98% cheaper
Choose DeepSeek V4 Flash 0731 for cost optimization

DeepSeek V4 Flash 0731 pricing:
Input:$0.09/M tokens
Output:$0.18/M tokens
GPT-5.2-Codex pricing:
Input:$1.75/M tokens
Output:$14.00/M tokens
DeepSeek V4 Flash 0731

DeepSeek

40

Composite Score

Winner
GPT-5.2-Codex

OpenAI

91

Composite Score

Signal-by-Signal Comparison
MetricDeepSeek V4 Flash 0731GPT-5.2-CodexWinner
Overall Score
40
91
GPT-5.2-Codex
Rank#236#24
GPT-5.2-Codex
Quality Rank#236#24
GPT-5.2-Codex
Adoption Rank#236#24
GPT-5.2-Codex
Parameters------
Context Window1049K400K
DeepSeek V4 Flash 0731
Pricing$0.09/$0.18/M$1.75/$14.00/M--
Signal Scores
Capabilities
67
100
GPT-5.2-Codex
Pricing
100
86
DeepSeek V4 Flash 0731
Context window size
96
89
DeepSeek V4 Flash 0731
Recency
100
95
DeepSeek V4 Flash 0731
Output Capacity
93
85
DeepSeek V4 Flash 0731
Benchmarks--
89
GPT-5.2-Codex
Benchmark Head-to-Head(11 benchmarks)
DeepSeek V4: 1GPT-5.2-Codex: 1
DeepSeek V4
GPT-5.2-Codex
Normalized 0-100%
MMLU
-93.5%
MMLU-Pro
86.2%86%
GPQA Diamond
-87%
MATH-500
-94%
HumanEval
-97%
SWE-bench Verified
-78%
IFEval
-93%
BBH
-91.5%
Arena Elo
14331481
LiveBench
-77.5%
HLE
-37%
Benchmark Interpretation

Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.

DeepSeek V4 Flash 0731Entry Level

Scores 40/100 (rank #236), placing it in the top 19% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
GPT-5.2-CodexElite Tier

Scores 91/100 (rank #24), placing it in the top 92% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

GPT-5.2-Codex has a 51-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.

When to Use Each Model

Choose DeepSeek V4 Flash 0731 when you need:

  • High-volume production workloads where API costs must be minimized
  • Processing long documents or large codebases (1049K token context)
  • Step-by-step reasoning and chain-of-thought problem solving
  • Self-hosted deployments where you need full control over the model

Choose GPT-5.2-Codex when you need:

  • Multimodal workflows that require image understanding
  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
DeepSeek V4 Flash 0731Best Value
Input cost$0.09/M tokens
Output cost$0.18/M tokens
Cost per quality point$0.007
Est. monthly (1M tokens/day)$4.05
GPT-5.2-Codex
Input cost$1.75/M tokens
Output cost$14.00/M tokens
Cost per quality point$0.174
Est. monthly (1M tokens/day)$236.25

DeepSeek V4 Flash 0731 offers 98% better value per quality point. At 1M tokens/day, you'd spend $4.05/month with DeepSeek V4 Flash 0731 vs $236.25/month with GPT-5.2-Codex - a $232.20 monthly difference.

Latency & Speed
DeepSeek V4 Flash 0731Faster
Speed score0/100
GPT-5.2-Codex
Speed score0/100

Both models have comparable response speeds. For most applications, the latency difference is negligible.

When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.

Example Use Cases

Code generation & review

Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring

DeepSeek V4 Flash 0731

Customer support chatbot

Suitable for user-facing chat with competitive response times. DeepSeek V4 Flash 0731 also offers lower per-token costs for high-volume support

DeepSeek V4 Flash 0731

Long document analysis

Larger context window (1049K tokens) can process longer documents, contracts, and research papers in a single pass

DeepSeek V4 Flash 0731

Batch data extraction

Lower output pricing ($0.18/M) reduces costs when processing thousands of records daily

DeepSeek V4 Flash 0731

Creative writing & content

Higher overall composite score (91/100) correlates with better nuance, coherence, and style in long-form content

GPT-5.2-Codex

Image understanding & OCR

Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly

GPT-5.2-Codex
Which Should You Choose?
Our recommendation:
GPT-5.2-Codex

GPT-5.2-Codex clearly outperforms DeepSeek V4 Flash 0731 with a significant 50.5-point lead. For most general use cases, GPT-5.2-Codex is the stronger choice. However, DeepSeek V4 Flash 0731 may still excel in niche scenarios.

by DeepSeek

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Cost - 98% lower pricing; better value at scale
  • Choose for Reliability - Higher uptime and faster response speeds
  • Choose for Prototyping - Stronger community support and better developer experience
  • Choose for Production - Wider enterprise adoption and proven at scale
GPT-5.2-Codex
Recommended

by OpenAI

Consider for specialized use cases.

Capability Comparison
CapabilityDeepSeek V4 Flash 0731GPT-5.2-Codex
Vision (Image Input)differs
Function Calling
Streaming
JSON Mode
Reasoning
Web Searchdiffers
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

DeepSeek V4 Flash 0731

DeepSeek

Best Value
$0.3780
estimated monthly cost

GPT-5.2-Codex

OpenAI

$19.95
estimated monthly cost

DeepSeek V4 Flash 0731 saves you $19.57/month

That's 98% cheaper than GPT-5.2-Codex at 1,000 tokens/request and 100 requests/day.

Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.

Parameters & Context
ParameterDeepSeek V4 Flash 0731GPT-5.2-Codex
Context Window1.0M400K
Max Output Tokens384,000128,000
Open SourceYesNo
CreatedJul 31, 2026Jan 14, 2026
Last updated: 20m ago

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DeepSeek V4 Flash 0731 vs GPT-5.2-Codex (2026) | LM Market Cap