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GPT-5.5 vs R1 0528

GPT-5.5

OpenAI

93#13
vs
R1 0528

DeepSeek

79#90
Signal-by-Signal Comparison
SignalGPT-5.5DeltaR1 0528
Capabilities
100
+33
67
Benchmarks
93
+12
81
Pricing
70
-28
98
Context window size
96
+13
83
Recency
100
+47
53
Output Capacity
85
+10
75
Overall Result
5 wins
of 6
1 wins
GPT-5.5 wins 5 of 6 signals

Score History

Score History (25 data points)
GPT-5.5R1 0528
GPT-5.5

92.7

current score

Leader

GPT-5.5

right now

R1 0528

79.4

current score

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

GPT-5.5

OpenAI

Per request$0.020000
Daily$66.67
Monthly$2000.00
Annual$24000.00

R1 0528

DeepSeek

Best Value
Per request$0.001575
Daily$5.25
Monthly$157.50
Annual$1890.00

R1 0528 saves you $1842.50/month

That's $22110.00/year compared to GPT-5.5 at your current usage level of 100K calls/month.

92% cheaper
Choose R1 0528 for cost optimization

GPT-5.5 pricing:
Input:$5.00/M tokens
Output:$30.00/M tokens
R1 0528 pricing:
Input:$0.50/M tokens
Output:$2.15/M tokens
Winner
GPT-5.5

OpenAI

93

Composite Score

R1 0528

DeepSeek

79

Composite Score

Signal-by-Signal Comparison
MetricGPT-5.5R1 0528Winner
Overall Score
93
79
GPT-5.5
Rank#13#90
GPT-5.5
Quality Rank#13#90
GPT-5.5
Adoption Rank#13#90
GPT-5.5
Parameters------
Context Window1050K164K
GPT-5.5
Pricing$5.00/$30.00/M$0.50/$2.15/M--
Signal Scores
Capabilities
100
67
GPT-5.5
Benchmarks
93
81
GPT-5.5
Pricing
70
98
R1 0528
Context window size
96
83
GPT-5.5
Recency
100
53
GPT-5.5
Output Capacity
85
75
GPT-5.5
Benchmark Head-to-Head(11 benchmarks)
GPT-5.5: 4R1 0528: 0
GPT-5.5
R1 0528
Normalized 0-100%
MMLU
92.4%91.5%
MMLU-Pro
-83.4%
GPQA Diamond
93.6%76%
MATH-500
-97.8%
SWE-bench Verified
88.7%57.6%
AIME 2024
-84%
IFEval
-85.5%
BBH
-86.5%
Arena Elo
14751380
LiveBench
-69.5%
HLE
41.4%-
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.

GPT-5.5Elite Tier

Scores 93/100 (rank #13), placing it in the top 96% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
R1 0528Strong Performer

Scores 79/100 (rank #90), placing it in the top 69% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

GPT-5.5 has a 13-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.

When to Use Each Model

Choose GPT-5.5 when you need:

  • Processing long documents or large codebases (1050K token context)
  • Multimodal workflows that require image understanding
  • Step-by-step reasoning and chain-of-thought problem solving

Choose R1 0528 when you need:

  • High-volume production workloads where API costs must be minimized
  • Step-by-step reasoning and chain-of-thought problem solving
  • Self-hosted deployments where you need full control over the model
Cost-Performance Analysis
GPT-5.5
Input cost$5.00/M tokens
Output cost$30.00/M tokens
Cost per quality point$0.378
Est. monthly (1M tokens/day)$525.00
R1 0528Best Value
Input cost$0.50/M tokens
Output cost$2.15/M tokens
Cost per quality point$0.033
Est. monthly (1M tokens/day)$39.75

R1 0528 offers 92% better value per quality point. At 1M tokens/day, you'd spend $39.75/month with R1 0528 vs $525.00/month with GPT-5.5 - a $485.25 monthly difference.

Latency & Speed
GPT-5.5Faster
Speed score0/100
R1 0528
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

GPT-5.5

Customer support chatbot

Suitable for user-facing chat with competitive response times. R1 0528 also offers lower per-token costs for high-volume support

GPT-5.5

Long document analysis

Larger context window (1050K tokens) can process longer documents, contracts, and research papers in a single pass

GPT-5.5

Batch data extraction

Lower output pricing ($2.15/M) reduces costs when processing thousands of records daily

R1 0528

Creative writing & content

Higher overall composite score (93/100) correlates with better nuance, coherence, and style in long-form content

GPT-5.5

Image understanding & OCR

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

GPT-5.5
Which Should You Choose?
Our recommendation:
GPT-5.5

GPT-5.5 clearly outperforms R1 0528 with a significant 13.299999999999997-point lead. For most general use cases, GPT-5.5 is the stronger choice. However, R1 0528 may still excel in niche scenarios.

GPT-5.5
Recommended

by OpenAI

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • 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

by DeepSeek

  • Choose for Cost - 92% lower pricing; better value at scale
Capability Comparison
CapabilityGPT-5.5R1 0528
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)

GPT-5.5

OpenAI

$45.00
estimated monthly cost

R1 0528

DeepSeek

Best Value
$3.48
estimated monthly cost

R1 0528 saves you $41.52/month

That's 92% cheaper than GPT-5.5 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
ParameterGPT-5.5R1 0528
Context Window1.1M164K
Max Output Tokens128,00032,768
Open SourceNoYes
CreatedApr 24, 2026May 28, 2025
Last updated: 35m ago

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GPT-5.5 vs R1 0528 (2026) | LM Market Cap