Model Comparison

GPT-5.4 vs Claude 3.5 HaikuWhich is better in 2026?

GPT-5.4 significantly outperforms across most benchmarks. Claude 3.5 Haiku is 3.5x cheaper per token.

Verdict: GPT-5.4 vs Claude 3.5 Haiku — which is better?

GPT-5.4 (by OpenAI) and Claude 3.5 Haiku (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 1 benchmarks (GPQA), while Claude 3.5 Haiku is better at 0 benchmarks. GPT-5.4 significantly outperforms across most benchmarks.

On price, Claude 3.5 Haiku is roughly 3.5x 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 1 of 1 shared benchmarks
  • 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 3.5 Haiku if…

  • cost matters — it's about 3.5x cheaper per token
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-5.4 outperforms in 1 benchmarks (GPQA), while Claude 3.5 Haiku is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Sat Jun 06 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude 3.5 Haiku costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 3.1x more expensive than Claude 3.5 Haiku ($0.80/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 3.8x more expensive than Claude 3.5 Haiku ($4.00/1M tokens).

In conclusion, GPT-5.4 is more expensive than Claude 3.5 Haiku.*

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

Lowest available price from all providers
Sat Jun 06 2026 • llm-stats.com
OpenAI
GPT-5.4
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
Anthropic
Claude 3.5 Haiku
Input tokens$0.80
Output tokens$4.00
Best providerAWS Bedrock
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 3.5 Haiku's 200,000 tokens. Claude 3.5 Haiku can generate longer responses up to 200,000 tokens, while GPT-5.4 is limited to 128,000 tokens.

OpenAI
GPT-5.4
Input1,000,000 tokens
Output128,000 tokens
Anthropic
Claude 3.5 Haiku
Input200,000 tokens
Output200,000 tokens
Sat Jun 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.4 supports multimodal inputs, whereas Claude 3.5 Haiku does not.

GPT-5.4 can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5.4

Text
Images
Audio
Video

Claude 3.5 Haiku

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 3.5 Haiku

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Claude 3.5 Haiku was released on 2024-10-22.

GPT-5.4 is 17 months newer than Claude 3.5 Haiku.

GPT-5.4

Mar 5, 2026

3 months ago

1.4yr newer
Claude 3.5 Haiku

Oct 22, 2024

1.6 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 3.5 Haiku is available from Bedrock, Google, Anthropic.

GPT-5.4

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

Claude 3.5 Haiku

bedrock logo
AWS Bedrock
Input Price:Input: $0.80/1MOutput Price:Output: $4.00/1M
google logo
Google
Input Price:Input: $0.80/1MOutput Price:Output: $4.00/1M
anthropic logo
Anthropic
Input Price:Input: $1.00/1MOutput Price:Output: $5.00/1M
* 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)
Supports multimodal inputs
Higher GPQA score (92.8% vs 41.6%)
Anthropic
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
Anthropic
Claude 3.5 Haiku

FAQ

Common questions about GPT-5.4 vs Claude 3.5 Haiku.

Which is better, GPT-5.4 or Claude 3.5 Haiku?

GPT-5.4 significantly outperforms across most benchmarks. GPT-5.4 is made by OpenAI and Claude 3.5 Haiku 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 3.5 Haiku 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 3.5 Haiku scores HumanEval: 88.1%, MGSM: 85.6%, DROP: 83.1%, MATH: 69.4%, MMLU-Pro: 65.0%.

Is GPT-5.4 cheaper than Claude 3.5 Haiku?

Claude 3.5 Haiku is 3.1x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. Claude 3.5 Haiku costs $0.80/M input and $4.00/M output via bedrock.

What are the context window sizes for GPT-5.4 and Claude 3.5 Haiku?

GPT-5.4 supports 1.0M tokens and Claude 3.5 Haiku 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 3.5 Haiku?

Key differences include context window (1.0M vs 200K), input pricing ($2.50 vs $0.80/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.4 and Claude 3.5 Haiku?

GPT-5.4 is developed by OpenAI and Claude 3.5 Haiku is developed by Anthropic.

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