Claude Sonnet 4.5 vs GPT-5

Side-by-side comparison of pricing, capabilities, benchmarks, and use case fit.

A

Claude Sonnet 4.5

Anthropic

Overall 92

fast

O

GPT-5

OpenAI

Overall 95

standard

Capability radar

Normalized coding, reasoning, writing, vision, context, and value

Claude Sonnet 4.5GPT-5

Comparison of Claude Sonnet 4.5 vs GPT-5
Metric	Claude Sonnet 4.5	GPT-5
Input Price / 1M	$3.00	$5.00
Output Price / 1M	$15.00	$20.00
Combined Price / 1M	$18.00	$25.00
Context Window	200,000	400,000
Coding Score	95	95
Reasoning Score	93	96
Vision Score	88	96
Audio	No	Yes
Streaming	Yes	Yes
Function Calling	Yes	Yes
Latency Tier	fast	standard
Release Date	6/15/2026	6/10/2026

Claude Sonnet 4.5 — Strengths & Weaknesses

Strengths

Coding excellence
Speed/quality balance
Strong agents

Weaknesses

Below Opus on hardest analysis

GPT-5 — Strengths & Weaknesses

Strengths

Frontier general intelligence
Strong tooling
Multimodal

Weaknesses

Premium pricing

Use Case Verdicts

Coding

Claude Sonnet 4.5

Claude Sonnet 4.5 scores 95 vs 95 on coding benchmarks.

General Chat

GPT-5 leads on writing quality (94 vs 93).

Long Context

GPT-5 offers 400K tokens vs 200K.

Cost Efficiency

Claude Sonnet 4.5

Claude Sonnet 4.5 is cheaper at $18.00/M combined vs $25.00/M.

Enterprise Use

GPT-5 combines strong reasoning, tooling, and context for enterprise workloads.

Agent Workflows

Claude Sonnet 4.5

Claude Sonnet 4.5 is better suited for agentic workflows with tool use and coding capability.