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Claude Haiku 5.5 vs GPT-4o mini

Claude Haiku 5.5 leads the LLM Stats Score 50.3 to 3.6. Claude Haiku 5.5 is 1.3x cheaper per token.

Anthropic · OpenAI · Updated for 2026

Which is better?

Claude Haiku 5.5 leads the overall LLM Stats Score 50.3 to 3.6, ranking #18 overall.

On price, Claude Haiku 5.5 is roughly 1.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Haiku 5.5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Haiku 5.5

  • overall performance matters — it scores 50.3 and ranks #18 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • cost matters — it's about 1.3x 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 Oct 2026

Choose GPT-4o mini

  • you want predictable pricing at $0.15/M input and $0.60/M output

At a glance

The differences that matter most.

Claude Haiku 5.5
Anthropic
GPT-4o mini
OpenAI
Core performance indexes
LLM Stats Score
50.3
#18
3.6
#322
Reasoning
47.4
#26
4.1
#312
Coding
40.7
#13
-0.6
#258
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.10 / M
$0.15 / M
Output price
$0.50 / M
$0.60 / M
Context window
1,000,000
128,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Claude Haiku 5.5
GPT-4o mini
Math
25.7#110
11.4#246
Vision
30.5#32
-0.4#195
Multimodal
31.6#25
2.4#155
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

36 reported for Claude Haiku 5.5 · 9 for GPT-4o mini

No common benchmarks found

Claude Haiku 5.5 and GPT-4o minidon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Claude Haiku 5.5 costs less

For input processing, Claude Haiku 5.5 ($0.10/1M tokens) is 1.5x cheaper than GPT-4o mini ($0.15/1M tokens).

For output processing, Claude Haiku 5.5 ($0.50/1M tokens) is 1.2x cheaper than GPT-4o mini ($0.60/1M tokens).

In conclusion, GPT-4o mini is more expensive than Claude Haiku 5.5.*

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

Lowest available price from all providers
Wed Oct 07 2026 • llm-stats.com
Anthropic
Claude Haiku 5.5
Input tokens$0.10
Output tokens$0.50
Best providerAnthropic
OpenAI
GPT-4o mini
Input tokens$0.15
Output tokens$0.60
Best providerAzure
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Claude Haiku 5.5 accepts 1,000,000 input tokens compared to GPT-4o mini's 128,000 tokens. Claude Haiku 5.5 can generate longer responses up to 128,000 tokens, while GPT-4o mini is limited to 16,384 tokens.

Anthropic
Claude Haiku 5.5
Input1,000,000 tokens
Output128,000 tokens
OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
Wed Oct 07 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Haiku 5.5 and GPT-4o mini support multimodal inputs.

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

Claude Haiku 5.5

Text
Images
Audio
Video

GPT-4o mini

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.

Claude Haiku 5.5

Proprietary

Closed source

GPT-4o mini

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Haiku 5.5 was released on 2026-10-07, while GPT-4o mini was released on 2024-07-18.

Claude Haiku 5.5 is 27 months newer than GPT-4o mini.

Claude Haiku 5.5

Oct 7, 2026

0 days ago

2.2yr newer
GPT-4o mini

Jul 18, 2024

2.2 years ago

Knowledge Cutoff

When training data ends

Claude Haiku 5.5 has a knowledge cutoff of 2026-06-01, while GPT-4o mini has a cutoff of 2023-10-01.

Claude Haiku 5.5 has more recent training data (up to 2026-06-01), making it potentially better informed about events through that date compared to GPT-4o mini (2023-10-01).

Claude Haiku 5.5

Jun 2026

2.7 yr newer
GPT-4o mini

Oct 2023

Provider Availability

Claude Haiku 5.5 is available from Anthropic. GPT-4o mini is available from Azure.

Claude Haiku 5.5

anthropic logo
Anthropic
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M

GPT-4o mini

azure logo
Azure
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Haiku 5.5 and GPT-4o mini side-by-side, then vote on the output you prefer.

Claude Haiku 5.5
✓ Preferred
GPT-4o mini
Open in Playground

FAQ

Common questions about Claude Haiku 5.5 vs GPT-4o mini.

Which is better, Claude Haiku 5.5 or GPT-4o mini?

Claude Haiku 5.5 leads the LLM Stats Score 50.3 to 3.6. Claude Haiku 5.5 is made by Anthropic and GPT-4o mini is made by OpenAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Haiku 5.5 compare to GPT-4o mini in benchmarks?

Claude Haiku 5.5 scores Global-MMLU: 87.8%, MILU: 87.6%, BenchCAD (with Python tool): 87.0%, Chartography: 86.2%, SWE-bench Multilingual: 83.7%. GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%.

Is Claude Haiku 5.5 cheaper than GPT-4o mini?

Claude Haiku 5.5 is 1.5x cheaper for input tokens. Claude Haiku 5.5 costs $0.10/M input and $0.50/M output via anthropic. GPT-4o mini costs $0.15/M input and $0.60/M output via azure.

What are the context window sizes for Claude Haiku 5.5 and GPT-4o mini?

Claude Haiku 5.5 supports 1.0M tokens and GPT-4o mini supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Haiku 5.5 and GPT-4o mini?

Key differences include LLM Stats Score (50.3 vs 3.6), context window (1.0M vs 128K), input pricing ($0.10 vs $0.15/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 5.5 and GPT-4o mini?

Claude Haiku 5.5 is developed by Anthropic and GPT-4o mini is developed by OpenAI.

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