Model Comparison

Claude 3.5 Haiku vs Phi 4Which is better in 2026?

Both models are evenly matched across the benchmarks. Phi 4 is 18.3x cheaper per token.

Verdict: Claude 3.5 Haiku vs Phi 4 — which is better?

Claude 3.5 Haiku (by Anthropic) and Phi 4 (by Microsoft) 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.

Claude 3.5 Haiku outperforms in 3 benchmarks (DROP, HumanEval, MGSM), while Phi 4 is better at 3 benchmarks (GPQA, MATH, MMLU-Pro). Both models are evenly matched across the benchmarks.

On price, Phi 4 is roughly 18.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude 3.5 Haiku also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude 3.5 Haiku if…

  • you process long inputs — it offers a 200,000 token context window

Choose Phi 4 if…

  • cost matters — it's about 18.3x cheaper per token
  • you want the most recent training data — it shipped Dec 2024
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Claude 3.5 Haiku outperforms in 3 benchmarks (DROP, HumanEval, MGSM), while Phi 4 is better at 3 benchmarks (GPQA, MATH, MMLU-Pro).

Both models are evenly matched across the benchmarks.

Mon Jul 20 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Phi 4 costs less

For input processing, Claude 3.5 Haiku ($0.80/1M tokens) is 11.4x more expensive than Phi 4 ($0.07/1M tokens).

For output processing, Claude 3.5 Haiku ($4.00/1M tokens) is 28.6x more expensive than Phi 4 ($0.14/1M tokens).

In conclusion, Claude 3.5 Haiku is more expensive than Phi 4.*

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

Lowest available price from all providers
Mon Jul 20 2026 • llm-stats.com
Anthropic
Claude 3.5 Haiku
Input tokens$0.80
Output tokens$4.00
Best providerAWS Bedrock
Microsoft
Phi 4
Input tokens$0.07
Output tokens$0.14
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude 3.5 Haiku accepts 200,000 input tokens compared to Phi 4's 16,000 tokens. Claude 3.5 Haiku can generate longer responses up to 200,000 tokens, while Phi 4 is limited to 16,000 tokens.

Anthropic
Claude 3.5 Haiku
Input200,000 tokens
Output200,000 tokens
Microsoft
Phi 4
Input16,000 tokens
Output16,000 tokens
Mon Jul 20 2026 • llm-stats.com

License

Usage and distribution terms

Claude 3.5 Haiku is licensed under a proprietary license, while Phi 4 uses MIT.

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

Claude 3.5 Haiku

Proprietary

Closed source

Phi 4

MIT

Open weights

Release Timeline

When each model was launched

Claude 3.5 Haiku was released on 2024-10-22, while Phi 4 was released on 2024-12-12.

Phi 4 is 2 months newer than Claude 3.5 Haiku.

Claude 3.5 Haiku

Oct 22, 2024

1.7 years ago

Phi 4

Dec 12, 2024

1.6 years ago

1mo newer

Knowledge Cutoff

When training data ends

Phi 4 has a documented knowledge cutoff of 2024-06-01, while Claude 3.5 Haiku's cutoff date is not specified.

We can confirm Phi 4's training data extends to 2024-06-01, but cannot make a direct comparison without Claude 3.5 Haiku's cutoff date.

Claude 3.5 Haiku

—

Phi 4

Jun 2024

Provider Availability

Claude 3.5 Haiku is available from Bedrock, Google, Anthropic. Phi 4 is available from DeepInfra.

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

Phi 4

deepinfra logo
Deepinfra
Input Price:Input: $0.07/1MOutput Price:Output: $0.14/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Higher DROP score (83.1% vs 75.5%)
Higher HumanEval score (88.1% vs 82.6%)
Higher MGSM score (85.6% vs 80.6%)
Microsoft
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher GPQA score (56.1% vs 41.6%)
Higher MATH score (80.4% vs 69.4%)
Higher MMLU-Pro score (70.4% vs 65.0%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude 3.5 Haiku and Phi 4 side-by-side, then vote on the output you prefer.

Claude 3.5 Haiku
✓ Preferred
Phi 4
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude 3.5 Haiku
Microsoft
Phi 4

FAQ

Common questions about Claude 3.5 Haiku vs Phi 4.

Which is better, Claude 3.5 Haiku or Phi 4?

Both models are evenly matched across the benchmarks. Claude 3.5 Haiku is made by Anthropic and Phi 4 is made by Microsoft. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude 3.5 Haiku compare to Phi 4 in benchmarks?

Claude 3.5 Haiku scores HumanEval: 88.1%, MGSM: 85.6%, DROP: 83.1%, MATH: 69.4%, MMLU-Pro: 65.0%. Phi 4 scores MMLU: 84.8%, HumanEval+: 82.8%, HumanEval: 82.6%, MGSM: 80.6%, MATH: 80.4%.

Is Claude 3.5 Haiku cheaper than Phi 4?

Phi 4 is 11.4x cheaper for input tokens. Claude 3.5 Haiku costs $0.80/M input and $4.00/M output via bedrock. Phi 4 costs $0.07/M input and $0.14/M output via deepinfra.

What are the context window sizes for Claude 3.5 Haiku and Phi 4?

Claude 3.5 Haiku supports 200K tokens and Phi 4 supports 16K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude 3.5 Haiku and Phi 4?

Key differences include context window (200K vs 16K), input pricing ($0.80 vs $0.07/M), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3.5 Haiku and Phi 4?

Claude 3.5 Haiku is developed by Anthropic and Phi 4 is developed by Microsoft.

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