Model Comparison

Claude Opus 4.5 vs Claude 3 HaikuWhich is better in 2026?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude 3 Haiku is 20.0x cheaper per token.

Verdict: Claude Opus 4.5 vs Claude 3 Haiku — which is better?

Claude Opus 4.5 (by Anthropic) and Claude 3 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.

Claude Opus 4.5 outperforms in 1 benchmarks (GPQA), while Claude 3 Haiku is better at 0 benchmarks. Claude Opus 4.5 significantly outperforms across most benchmarks.

On price, Claude 3 Haiku is roughly 20.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Choose Claude Opus 4.5 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Nov 2025

Choose Claude 3 Haiku if…

  • cost matters — it's about 20.0x cheaper per token
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.5 outperforms in 1 benchmarks (GPQA), while Claude 3 Haiku is better at 0 benchmarks.

Claude Opus 4.5 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 Haiku costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 20.0x more expensive than Claude 3 Haiku ($0.25/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 20.0x more expensive than Claude 3 Haiku ($1.25/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than Claude 3 Haiku.*

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

Lowest available price from all providers
Sat Jun 06 2026 • llm-stats.com
Anthropic
Claude Opus 4.5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
Anthropic
Claude 3 Haiku
Input tokens$0.25
Output tokens$1.25
Best providerAnthropic
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 200,000 tokens. Claude 3 Haiku can generate longer responses up to 200,000 tokens, while Claude Opus 4.5 is limited to 64,000 tokens.

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
Anthropic
Claude 3 Haiku
Input200,000 tokens
Output200,000 tokens
Sat Jun 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.5 and Claude 3 Haiku support multimodal inputs.

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

Claude Opus 4.5

Text
Images
Audio
Video

Claude 3 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.

Claude Opus 4.5

Proprietary

Closed source

Claude 3 Haiku

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Claude 3 Haiku was released on 2024-03-13.

Claude Opus 4.5 is 21 months newer than Claude 3 Haiku.

Claude Opus 4.5

Nov 24, 2025

6 months ago

1.7yr newer
Claude 3 Haiku

Mar 13, 2024

2.2 years ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while Claude 3 Haiku's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without Claude 3 Haiku's cutoff date.

Claude Opus 4.5

Mar 2025

Claude 3 Haiku

—

Provider Availability

Claude Opus 4.5 is available from Anthropic. Claude 3 Haiku is available from Anthropic, Bedrock, Google.

Claude Opus 4.5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

Claude 3 Haiku

anthropic logo
Anthropic
Input Price:Input: $0.25/1MOutput Price:Output: $1.25/1M
bedrock logo
AWS Bedrock
Input Price:Input: $0.25/1MOutput Price:Output: $1.25/1M
google logo
Google
Input Price:Input: $0.25/1MOutput Price:Output: $1.25/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Higher GPQA score (87.0% vs 33.3%)
Anthropic
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
Anthropic
Claude 3 Haiku

FAQ

Common questions about Claude Opus 4.5 vs Claude 3 Haiku.

Which is better, Claude Opus 4.5 or Claude 3 Haiku?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic and Claude 3 Haiku is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.5 compare to Claude 3 Haiku in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. Claude 3 Haiku scores ARC-C: 89.2%, GSM8k: 88.9%, HellaSwag: 85.9%, DROP: 78.4%, HumanEval: 75.9%.

Is Claude Opus 4.5 cheaper than Claude 3 Haiku?

Claude 3 Haiku is 20.0x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. Claude 3 Haiku costs $0.25/M input and $1.25/M output via anthropic.

What are the context window sizes for Claude Opus 4.5 and Claude 3 Haiku?

Claude Opus 4.5 supports 200K tokens and Claude 3 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 Claude Opus 4.5 and Claude 3 Haiku?

Key differences include input pricing ($5.00 vs $0.25/M). See the full comparison above for benchmark-by-benchmark results.

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