Model Comparison

GPT-5.4 vs Claude Opus 4Which is better in 2026?

GPT-5.4 significantly outperforms across most benchmarks. GPT-5.4 is 5.3x cheaper per token.

Verdict: GPT-5.4 vs Claude Opus 4 — which is better?

GPT-5.4 (by OpenAI) and Claude Opus 4 (by Anthropic) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

GPT-5.4 outperforms in 2 benchmarks (ARC-AGI v2, GPQA), while Claude Opus 4 is better at 0 benchmarks. GPT-5.4 significantly outperforms across most benchmarks.

On price, GPT-5.4 is roughly 5.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.4 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-5.4 if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • cost matters — it's about 5.3x cheaper per token
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Mar 2026

Choose Claude Opus 4 if…

  • you want predictable pricing at $15.00/M input and $75.00/M output
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GPT-5.4 outperforms in 2 benchmarks (ARC-AGI v2, GPQA), while Claude Opus 4 is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-5.4 costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 6.0x cheaper than Claude Opus 4 ($15.00/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 5.0x cheaper than Claude Opus 4 ($75.00/1M tokens).

In conclusion, Claude Opus 4 is more expensive than GPT-5.4.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
OpenAI
GPT-5.4
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
Anthropic
Claude Opus 4
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5.4 accepts 1,000,000 input tokens compared to Claude Opus 4's 200,000 tokens. GPT-5.4 can generate longer responses up to 128,000 tokens, while Claude Opus 4 is limited to 32,000 tokens.

OpenAI
GPT-5.4
Input1,000,000 tokens
Output128,000 tokens
Anthropic
Claude Opus 4
Input200,000 tokens
Output32,000 tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and Claude Opus 4 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-5.4

Text
Images
Audio
Video

Claude Opus 4

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

GPT-5.4

Proprietary

Closed source

Claude Opus 4

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Claude Opus 4 was released on 2025-05-22.

GPT-5.4 is 10 months newer than Claude Opus 4.

GPT-5.4

Mar 5, 2026

3 months ago

9mo newer
Claude Opus 4

May 22, 2025

1.0 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

GPT-5.4 is available from OpenAI. Claude Opus 4 is available from Anthropic, Bedrock, Google.

GPT-5.4

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $15.00/1M

Claude Opus 4

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (1,000,000 tokens)
Less expensive input tokens
Less expensive output tokens
Higher ARC-AGI v2 score (73.3% vs 8.6%)
Higher GPQA score (92.8% vs 79.6%)
Anthropic

No standout differentiators in the data we have for this pair.

OpenAIGPT-5.4
AnthropicClaude Opus 4
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Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
Anthropic
Claude Opus 4

FAQ

Common questions about GPT-5.4 vs Claude Opus 4.

Which is better, GPT-5.4 or Claude Opus 4?

GPT-5.4 significantly outperforms across most benchmarks. GPT-5.4 is made by OpenAI and Claude Opus 4 is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.4 compare to Claude Opus 4 in benchmarks?

GPT-5.4 scores Tau2 Telecom: 98.9%, ARC-AGI: 93.7%, Graphwalks BFS <128k: 93.0%, GPQA: 92.8%, Graphwalks parents <128k: 89.8%. Claude Opus 4 scores MMMLU: 88.8%, TAU-bench Retail: 81.4%, GPQA: 79.6%, MMMU (validation): 76.5%, AIME 2025: 75.5%.

Is GPT-5.4 cheaper than Claude Opus 4?

GPT-5.4 is 6.0x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. Claude Opus 4 costs $15.00/M input and $75.00/M output via anthropic.

What are the context window sizes for GPT-5.4 and Claude Opus 4?

GPT-5.4 supports 1.0M tokens and Claude Opus 4 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.4 and Claude Opus 4?

Key differences include context window (1.0M vs 200K), input pricing ($2.50 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.4 and Claude Opus 4?

GPT-5.4 is developed by OpenAI and Claude Opus 4 is developed by Anthropic.

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