Skip to content

Claude Sonnet 5 vs GPT-5

Claude Sonnet 5

Anthropic

85#44
vs
GPT-5

OpenAI

89#36
Signal-by-Signal Comparison
SignalClaude Sonnet 5DeltaGPT-5
Capabilities
100
--
100
Pricing
90
--
90
Context window size
95
+6
89
Recency
100
+32
68
Output Capacity
85
--
85
Benchmarks
0
-88
88
Overall Result
2 wins
of 6
1 wins
Claude Sonnet 5 wins 2 of 6 signals

Score History

Score History (24 data points)
Claude Sonnet 5GPT-5
Claude Sonnet 5

85.2

current score

Leader

GPT-5

right now

GPT-5

88.7

current score

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

Claude Sonnet 5

Anthropic

Per request$0.007000
Daily$23.33
Monthly$700.00
Annual$8400.00

GPT-5

OpenAI

Best Value
Per request$0.006250
Daily$20.83
Monthly$625.00
Annual$7500.00

GPT-5 saves you $75.00/month

That's $900.00/year compared to Claude Sonnet 5 at your current usage level of 100K calls/month.

11% cheaper
Choose GPT-5 for cost optimization

Claude Sonnet 5 pricing:
Input:$2.00/M tokens
Output:$10.00/M tokens
GPT-5 pricing:
Input:$1.25/M tokens
Output:$10.00/M tokens
Claude Sonnet 5

Anthropic

85

Composite Score

Winner
GPT-5

OpenAI

89

Composite Score

Signal-by-Signal Comparison
MetricClaude Sonnet 5GPT-5Winner
Overall Score
85
89
GPT-5
Rank#44#36
GPT-5
Quality Rank#44#36
GPT-5
Adoption Rank#44#36
GPT-5
Parameters------
Context Window1000K400K
Claude Sonnet 5
Pricing$2.00/$10.00/M$1.25/$10.00/M--
Signal Scores
Capabilities
100
100
Claude Sonnet 5
Pricing
90
90
Claude Sonnet 5
Context window size
95
89
Claude Sonnet 5
Recency
100
68
Claude Sonnet 5
Output Capacity
85
85
Claude Sonnet 5
Benchmarks--
88
GPT-5
Benchmark Head-to-Head(11 benchmarks)
Claude Sonnet: 0GPT-5: 0
Claude Sonnet
GPT-5
Normalized 0-100%
MMLU
-93%
MMLU-Pro
-84.5%
GPQA Diamond
-85%
MATH-500
-92.5%
HumanEval
-96.5%
SWE-bench Verified
-75%
IFEval
-92%
BBH
-90.5%
Arena Elo
-1465
LiveBench
-76%
HLE
-35%
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.

Claude Sonnet 5Elite Tier

Scores 85/100 (rank #44), placing it in the top 85% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
GPT-5Elite Tier

Scores 89/100 (rank #36), placing it in the top 88% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

With only a 4-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.

When to Use Each Model

Choose Claude Sonnet 5 when you need:

  • Processing long documents or large codebases (1000K token context)
  • Step-by-step reasoning and chain-of-thought problem solving

Choose GPT-5 when you need:

  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Claude Sonnet 5
Input cost$2.00/M tokens
Output cost$10.00/M tokens
Cost per quality point$0.141
Est. monthly (1M tokens/day)$180.00
GPT-5Best Value
Input cost$1.25/M tokens
Output cost$10.00/M tokens
Cost per quality point$0.127
Est. monthly (1M tokens/day)$168.75

GPT-5 offers 6% better value per quality point. At 1M tokens/day, you'd spend $168.75/month with GPT-5 vs $180.00/month with Claude Sonnet 5 - a $11.25 monthly difference.

Latency & Speed
Claude Sonnet 5Faster
Speed score0/100
GPT-5
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

Claude Sonnet 5

Customer support chatbot

Suitable for user-facing chat with competitive response times. Claude Sonnet 5 also offers lower per-token costs for high-volume support

Claude Sonnet 5

Long document analysis

Larger context window (1000K tokens) can process longer documents, contracts, and research papers in a single pass

Claude Sonnet 5

Batch data extraction

Lower output pricing ($10.00/M) reduces costs when processing thousands of records daily

Claude Sonnet 5

Creative writing & content

Higher overall composite score (89/100) correlates with better nuance, coherence, and style in long-form content

GPT-5

Image understanding & OCR

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

Claude Sonnet 5
Which Should You Choose?
Our recommendation:
GPT-5

GPT-5 has a moderate advantage with a 3.5-point lead in composite score. It wins on more signal dimensions, but Claude Sonnet 5 has specific strengths that could make it the better choice for certain workflows.

by Anthropic

  • 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
GPT-5
Recommended

by OpenAI

  • Choose for Cost - 6% lower pricing; better value at scale
Capability Comparison
CapabilityClaude Sonnet 5GPT-5
Vision (Image Input)
Function Calling
Streaming
JSON Mode
Reasoning
Web Search
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

Claude Sonnet 5

Anthropic

$15.60
estimated monthly cost

GPT-5

OpenAI

Best Value
$14.25
estimated monthly cost

GPT-5 saves you $1.35/month

That's 9% cheaper than Claude Sonnet 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
ParameterClaude Sonnet 5GPT-5
Context Window1M400K
Max Output Tokens128,000128,000
Open SourceNoNo
CreatedJun 30, 2026Aug 7, 2025
Last updated: 54m ago

Related comparisons

Claude Sonnet 5 vs GPT-5 (2026) | LM Market Cap