The AI arena is free today

Open Superagent

Claude Haiku 5.5 vs Mistral Small 4

Claude Haiku 5.5 leads the LLM Stats Score 50.0 to 18.9. Claude Haiku 5.5 is 1.3x cheaper per token.

Anthropic · Mistral AI · Updated for 2026

Which is better?

Claude Haiku 5.5 leads the overall LLM Stats Score 50.0 to 18.9, ranking #19 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 50.0 and ranks #19 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 Mistral Small 4

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Haiku 5.5
Anthropic
Mistral Small 4
Mistral AI
Core performance indexes
LLM Stats Score
50.0
#19
18.9
#225
Reasoning
47.2
#27
19.8
#208
Coding
40.2
#13
10.6
#176
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
256,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude Haiku 5.5
Mistral Small 4
Math
25.7#110
19.0#176
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

36 reported for Claude Haiku 5.5 · 9 for Mistral Small 4

No common benchmarks found

Claude Haiku 5.5 and Mistral Small 4don'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 Mistral Small 4 ($0.15/1M tokens).

For output processing, Claude Haiku 5.5 ($0.50/1M tokens) is 1.2x cheaper than Mistral Small 4 ($0.60/1M tokens).

In conclusion, Mistral Small 4 is more expensive than Claude Haiku 5.5.*

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

Lowest available price from all providers
Thu Oct 08 2026 • llm-stats.com
Anthropic
Claude Haiku 5.5
Input tokens$0.10
Output tokens$0.50
Best providerAnthropic
Mistral AI
Mistral Small 4
Input tokens$0.15
Output tokens$0.60
Best providerMistral
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 Mistral Small 4's 256,000 tokens. Mistral Small 4 can generate longer responses up to 256,000 tokens, while Claude Haiku 5.5 is limited to 128,000 tokens.

Anthropic
Claude Haiku 5.5
Input1,000,000 tokens
Output128,000 tokens
Mistral AI
Mistral Small 4
Input256,000 tokens
Output256,000 tokens
Thu Oct 08 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Haiku 5.5 and Mistral Small 4 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

Mistral Small 4

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Haiku 5.5 is licensed under a proprietary license, while Mistral Small 4 uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

Claude Haiku 5.5

Proprietary

Closed source

Mistral Small 4

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Haiku 5.5 was released on 2026-10-07, while Mistral Small 4 was released on 2026-03-16.

Claude Haiku 5.5 is 7 months newer than Mistral Small 4.

Claude Haiku 5.5

Oct 7, 2026

1 days ago

6mo newer
Mistral Small 4

Mar 16, 2026

6 months ago

Knowledge Cutoff

When training data ends

Claude Haiku 5.5 has a documented knowledge cutoff of 2026-06-01, while Mistral Small 4's cutoff date is not specified.

We can confirm Claude Haiku 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Mistral Small 4's cutoff date.

Claude Haiku 5.5

Jun 2026

Mistral Small 4

—

Provider Availability

Claude Haiku 5.5 is available from Anthropic. Mistral Small 4 is available from Mistral AI.

Claude Haiku 5.5

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

Mistral Small 4

mistral logo
Mistral
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 Mistral Small 4 side-by-side, then vote on the output you prefer.

Claude Haiku 5.5
✓ Preferred
Mistral Small 4
Open in Playground

FAQ

Common questions about Claude Haiku 5.5 vs Mistral Small 4.

Which is better, Claude Haiku 5.5 or Mistral Small 4?

Claude Haiku 5.5 leads the LLM Stats Score 50.0 to 18.9. Claude Haiku 5.5 is made by Anthropic and Mistral Small 4 is made by Mistral AI. 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 Mistral Small 4 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%. Mistral Small 4 scores AIME 2025: 83.8%, MMLU-Pro: 78.0%, AA-LCR: 71.2%, GPQA: 71.2%, LiveCodeBench: 63.6%.

Is Claude Haiku 5.5 cheaper than Mistral Small 4?

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. Mistral Small 4 costs $0.15/M input and $0.60/M output via mistral.

What are the context window sizes for Claude Haiku 5.5 and Mistral Small 4?

Claude Haiku 5.5 supports 1.0M tokens and Mistral Small 4 supports 256K 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 Mistral Small 4?

Key differences include LLM Stats Score (50.0 vs 18.9), context window (1.0M vs 256K), input pricing ($0.10 vs $0.15/M), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 5.5 and Mistral Small 4?

Claude Haiku 5.5 is developed by Anthropic and Mistral Small 4 is developed by Mistral AI.

Related comparisons