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DeepSeek V4.1 Flash vs GPT-5.2-Codex

DeepSeek V4.1 Flash

DeepSeek

40#251
vs
GPT-5.2-Codex

OpenAI

91#23
Signal-by-Signal Comparison
SignalDeepSeek V4.1 FlashDeltaGPT-5.2-Codex
Capabilities
83
-17
100
Pricing
99
+13
86
Context window size
96
+7
89
Recency
100
+13
87
Output Capacity
89
+8
82
Benchmarks
0
-89
89
Overall Result
4 wins
of 6
2 wins
DeepSeek V4.1 Flash wins 4 of 6 signals

Score History

Score History (32 data points)
DeepSeek V4.1 FlashGPT-5.2-Codex
DeepSeek V4.1 Flash

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 V4.1 Flash

DeepSeek

Best Value
Per request$0.000450
Daily$1.50
Monthly$45.00
Annual$540.00

GPT-5.2-Codex

OpenAI

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

DeepSeek V4.1 Flash saves you $830.00/month

That's $9960.00/year compared to GPT-5.2-Codex at your current usage level of 100K calls/month.

95% cheaper
Choose DeepSeek V4.1 Flash for cost optimization

DeepSeek V4.1 Flash pricing:
Input:$0.15/M tokens
Output:$0.60/M tokens
GPT-5.2-Codex pricing:
Input:$1.75/M tokens
Output:$14.00/M tokens
DeepSeek V4.1 Flash

DeepSeek

40

Composite Score

Winner
GPT-5.2-Codex

OpenAI

91

Composite Score

Signal-by-Signal Comparison
MetricDeepSeek V4.1 FlashGPT-5.2-CodexWinner
Overall Score
40
91
GPT-5.2-Codex
Rank#251#23
GPT-5.2-Codex
Quality Rank#251#23
GPT-5.2-Codex
Adoption Rank#251#23
GPT-5.2-Codex
Parameters------
Context Window1049K400K
DeepSeek V4.1 Flash
Pricing$0.15/$0.60/M$1.75/$14.00/M--
Signal Scores
Capabilities
83
100
GPT-5.2-Codex
Pricing
99
86
DeepSeek V4.1 Flash
Context window size
96
89
DeepSeek V4.1 Flash
Recency
100
87
DeepSeek V4.1 Flash
Output Capacity
89
82
DeepSeek V4.1 Flash
Benchmarks--
89
GPT-5.2-Codex
Benchmark Head-to-Head(11 benchmarks)
DeepSeek V4.1: 0GPT-5.2-Codex: 0
DeepSeek V4.1
GPT-5.2-Codex
Normalized 0-100%
MMLU
-93.5%
MMLU-Pro
-86%
GPQA Diamond
-87%
MATH-500
-94%
HumanEval
-97%
SWE-bench Verified
-78%
IFEval
-93%
BBH
-91.5%
Arena Elo
-1481
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 V4.1 FlashEntry Level

Scores 40/100 (rank #251), placing it in the top 14% of all 290 models tracked.

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

Scores 91/100 (rank #23), 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 V4.1 Flash 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:

  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
DeepSeek V4.1 FlashBest Value
Input cost$0.15/M tokens
Output cost$0.60/M tokens
Cost per quality point$0.019
Est. monthly (1M tokens/day)$11.25
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 V4.1 Flash offers 95% better value per quality point. At 1M tokens/day, you'd spend $11.25/month with DeepSeek V4.1 Flash vs $236.25/month with GPT-5.2-Codex - a $225.00 monthly difference.

Latency & Speed
DeepSeek V4.1 FlashFaster
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 V4.1 Flash

Customer support chatbot

Suitable for user-facing chat with competitive response times. DeepSeek V4.1 Flash also offers lower per-token costs for high-volume support

DeepSeek V4.1 Flash

Long document analysis

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

DeepSeek V4.1 Flash

Batch data extraction

Lower output pricing ($0.60/M) reduces costs when processing thousands of records daily

DeepSeek V4.1 Flash

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

DeepSeek V4.1 Flash
Which Should You Choose?
Our recommendation:
GPT-5.2-Codex

GPT-5.2-Codex clearly outperforms DeepSeek V4.1 Flash with a significant 50.5-point lead. For most general use cases, GPT-5.2-Codex is the stronger choice. However, DeepSeek V4.1 Flash may still excel in niche scenarios.

by DeepSeek

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Cost - 95% 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 V4.1 FlashGPT-5.2-Codex
Vision (Image Input)
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 V4.1 Flash

DeepSeek

Best Value
$0.9900
estimated monthly cost

GPT-5.2-Codex

OpenAI

$19.95
estimated monthly cost

DeepSeek V4.1 Flash saves you $18.96/month

That's 95% 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 V4.1 FlashGPT-5.2-Codex
Context Window1.0M400K
Max Output Tokens384,000128,000
Open SourceYesNo
CreatedSep 10, 2026Jan 14, 2026
Last updated: 22m ago

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