Claude 4 Opus vs GPT-5

API pricing, context window and capabilities for Claude 4 Opus and GPT-5, side by side. Prices are the cheapest serving route per 1M tokens, verified against LiteLLM and OpenRouter.

Verdict

computed from the published numbers

GPT-5 wins on price, on intelligence and on context window. Benchmark data is unavailable for one or both models.

Price

GPT-5

Coding

Not called

Intelligence

GPT-5

Context window

GPT-5

Key takeaways

who wins on what, from the published numbers

Claude 4 Opus wins

Higher max output (200K vs 128K)

GPT-5 wins

Cheaper input ($5.00 vs $1.25 /1M)
Cheaper output ($25.00 vs $10.00 /1M)
Larger context window (200K vs 410K)
More serving providers (3 vs 6)
Has web search

Cheaper overall

GPT-5

$1.25 + $10.00 /1M

Larger context

GPT-5

410K

More providers

GPT-5

6 providers

Pricing & specs

cheapest serving route · per 1M tokens

	Claude 4 Opus	GPT-5
Input $/1M	$5.00	$1.25 best
Output $/1M	$25.00	$10.00 best
Context window	200K	410K best
Max output	200K best	128K
Serving providers	3	6 best
Released	n/a	2025-08-07

Benchmarks

Artificial Analysis indices, side by side

	Claude 4 Opus	GPT-5
Intelligence	25.5	34.7 best
Coding	Not available	37.8
GPQA Diamond	70%	85% best
Output speed	Not available	69 t/s
Latency (TTFT)	Not available	33.91s

Cost calculator

choose a serving route for each side

Claude 4 Opus · route

GPT-5 · route

Input tokens / month

Output tokens / month

Claude 4 Opus

via Snowflake

$50

GPT-5

via Databricks

$16

Capabilities

feature support, side by side

Feature	Claude 4 Opus	GPT-5
Vision	✓	✓
Tool use	✓	✓
Reasoning	✓	✓
Audio	—	—
Prompt caching	✓	✓
Structured output	✓	✓
Web search	—	✓

Related comparisons

Compare Claude 4 Opus with

Claude 4 Sonnet Gemini 2.5 Pro o3 Claude 3.7 Sonnet Claude 3 Opus Claude Opus 4.1 GPT-4 GPT-4.1 GPT 4.5 Preview GPT-4o

Compare GPT-5 with

GPT-4o Claude Opus 4.5 Claude Sonnet 4.5 Gemini 3 Pro Grok 4

Frequently asked questions

Which is cheaper, Claude 4 Opus or GPT-5?

GPT-5 is cheaper for input ($5.00 vs $1.25 per 1M tokens). GPT-5 is cheaper for output ($25.00 vs $10.00 per 1M tokens).

What is the context window difference between Claude 4 Opus and GPT-5?

Claude 4 Opus has a 200K-token context window and GPT-5 has 410K tokens, so GPT-5 can take a larger prompt.

How do Claude 4 Opus and GPT-5 compare on benchmarks?

On the tracked Artificial Analysis indices, GPT-5 leads on intelligence.

Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily

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