Model Comparison

Claude Haiku 4.5 vs Claude Opus 4

Both models are evenly matched across the benchmarks. Claude Haiku 4.5 is 15.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Claude Haiku 4.5 outperforms in 3 benchmarks (AIME 2025, SWE-Bench Verified, Terminal-Bench), while Claude Opus 4 is better at 3 benchmarks (GPQA, MMMLU, MMMU (validation)).

Both models are evenly matched across the benchmarks.

Thu Apr 30 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude Haiku 4.5 costs less

For input processing, Claude Haiku 4.5 ($1.00/1M tokens) is 15.0x cheaper than Claude Opus 4 ($15.00/1M tokens).

For output processing, Claude Haiku 4.5 ($5.00/1M tokens) is 15.0x cheaper than Claude Opus 4 ($75.00/1M tokens).

In conclusion, Claude Opus 4 is more expensive than Claude Haiku 4.5.*

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

Lowest available price from all providers
Thu Apr 30 2026 • llm-stats.com
Anthropic
Claude Haiku 4.5
Input tokens$1.00
Output tokens$5.00
Best providerAnthropic
Anthropic
Claude Opus 4
Input tokens$15.00
Output tokens$75.00
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 Haiku 4.5 can generate longer responses up to 64,000 tokens, while Claude Opus 4 is limited to 32,000 tokens.

Anthropic
Claude Haiku 4.5
Input200,000 tokens
Output64,000 tokens
Anthropic
Claude Opus 4
Input200,000 tokens
Output32,000 tokens
Thu Apr 30 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Haiku 4.5 and Claude Opus 4 support multimodal inputs.

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

Claude Haiku 4.5

Text
Images
Audio
Video

Claude Opus 4

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 4.5

Proprietary

Closed source

Claude Opus 4

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Haiku 4.5 was released on 2025-10-15, while Claude Opus 4 was released on 2025-05-22.

Claude Haiku 4.5 is 5 months newer than Claude Opus 4.

Claude Haiku 4.5

Oct 15, 2025

6 months ago

4mo newer
Claude Opus 4

May 22, 2025

11 months ago

Knowledge Cutoff

When training data ends

Claude Haiku 4.5 has a documented knowledge cutoff of 2025-02-01, while Claude Opus 4's cutoff date is not specified.

We can confirm Claude Haiku 4.5's training data extends to 2025-02-01, but cannot make a direct comparison without Claude Opus 4's cutoff date.

Claude Haiku 4.5

Feb 2025

Claude Opus 4

—

Provider Availability

Claude Haiku 4.5 is available from Anthropic. Claude Opus 4 is available from Anthropic, Bedrock, Google.

Claude Haiku 4.5

anthropic logo
Anthropic
Input Price:Input: $1.00/1MOutput Price:Output: $5.00/1M

Claude Opus 4

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Less expensive input tokens
Less expensive output tokens
Higher AIME 2025 score (80.7% vs 75.5%)
Higher SWE-Bench Verified score (73.3% vs 72.5%)
Higher Terminal-Bench score (41.0% vs 39.2%)
Anthropic
Higher GPQA score (79.6% vs 73.0%)
Higher MMMLU score (88.8% vs 83.0%)
Higher MMMU (validation) score (76.5% vs 73.2%)
AnthropicClaude Haiku 4.5
AnthropicClaude Opus 4
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Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Haiku 4.5
Anthropic
Claude Opus 4

FAQ

Common questions about Claude Haiku 4.5 vs Claude Opus 4

Both models are evenly matched across the benchmarks. Claude Haiku 4.5 is made by Anthropic and Claude Opus 4 is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Claude Haiku 4.5 scores Tau2 Retail: 83.2%, MMMLU: 83.0%, Tau2 Telecom: 83.0%, AIME 2025: 80.7%, SWE-Bench Verified: 73.3%. Claude Opus 4 scores MMMLU: 88.8%, TAU-bench Retail: 81.4%, GPQA: 79.6%, MMMU (validation): 76.5%, AIME 2025: 75.5%.
Claude Haiku 4.5 is 15.0x cheaper for input tokens. Claude Haiku 4.5 costs $1.00/M input and $5.00/M output via anthropic. Claude Opus 4 costs $15.00/M input and $75.00/M output via anthropic.
Claude Haiku 4.5 supports 200K tokens and Claude Opus 4 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include input pricing ($1.00 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.