Model Comparison

Claude Haiku 4.5 vs Gemini 1.5 FlashWhich is better in 2026?

Claude Haiku 4.5 significantly outperforms across most benchmarks. Gemini 1.5 Flash is 7.6x cheaper per token.

Verdict: Claude Haiku 4.5 vs Gemini 1.5 Flash — which is better?

Claude Haiku 4.5 (by Anthropic) and Gemini 1.5 Flash (by Google) 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 Haiku 4.5 outperforms in 1 benchmarks (GPQA), while Gemini 1.5 Flash is better at 0 benchmarks. Claude Haiku 4.5 significantly outperforms across most benchmarks.

On price, Gemini 1.5 Flash is roughly 7.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 1.5 Flash also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Haiku 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 Oct 2025

Choose Gemini 1.5 Flash if…

  • cost matters — it's about 7.6x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Haiku 4.5 outperforms in 1 benchmarks (GPQA), while Gemini 1.5 Flash is better at 0 benchmarks.

Claude Haiku 4.5 significantly outperforms across most benchmarks.

Thu Jun 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 1.5 Flash costs less

For input processing, Claude Haiku 4.5 ($1.00/1M tokens) is 6.7x more expensive than Gemini 1.5 Flash ($0.15/1M tokens).

For output processing, Claude Haiku 4.5 ($5.00/1M tokens) is 8.3x more expensive than Gemini 1.5 Flash ($0.60/1M tokens).

In conclusion, Claude Haiku 4.5 is more expensive than Gemini 1.5 Flash.*

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

Lowest available price from all providers
Thu Jun 25 2026 • llm-stats.com
Anthropic
Claude Haiku 4.5
Input tokens$1.00
Output tokens$5.00
Best providerAnthropic
Google
Gemini 1.5 Flash
Input tokens$0.15
Output tokens$0.60
Best providerGoogle
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Context Window

Maximum input and output token capacity

Gemini 1.5 Flash accepts 1,048,576 input tokens compared to Claude Haiku 4.5's 200,000 tokens. Claude Haiku 4.5 can generate longer responses up to 64,000 tokens, while Gemini 1.5 Flash is limited to 8,192 tokens.

Anthropic
Claude Haiku 4.5
Input200,000 tokens
Output64,000 tokens
Google
Gemini 1.5 Flash
Input1,048,576 tokens
Output8,192 tokens
Thu Jun 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Haiku 4.5 and Gemini 1.5 Flash 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

Gemini 1.5 Flash

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

Gemini 1.5 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Haiku 4.5 was released on 2025-10-15, while Gemini 1.5 Flash was released on 2024-05-01.

Claude Haiku 4.5 is 18 months newer than Gemini 1.5 Flash.

Claude Haiku 4.5

Oct 15, 2025

8 months ago

1.5yr newer
Gemini 1.5 Flash

May 1, 2024

2.2 years ago

Knowledge Cutoff

When training data ends

Claude Haiku 4.5 has a knowledge cutoff of 2025-02-01, while Gemini 1.5 Flash has a cutoff of 2023-11-01.

Claude Haiku 4.5 has more recent training data (up to 2025-02-01), making it potentially better informed about events through that date compared to Gemini 1.5 Flash (2023-11-01).

Claude Haiku 4.5

Feb 2025

1.3 yr newer
Gemini 1.5 Flash

Nov 2023

Provider Availability

Claude Haiku 4.5 is available from Anthropic, Vertex AI. Gemini 1.5 Flash is available from Google.

Claude Haiku 4.5

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

Gemini 1.5 Flash

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

Outputs Comparison

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Key Takeaways

Anthropic
Higher GPQA score (73.0% vs 51.0%)
Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
AnthropicClaude Haiku 4.5
GoogleGemini 1.5 Flash
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Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Haiku 4.5
Google
Gemini 1.5 Flash

FAQ

Common questions about Claude Haiku 4.5 vs Gemini 1.5 Flash.

Which is better, Claude Haiku 4.5 or Gemini 1.5 Flash?

Claude Haiku 4.5 significantly outperforms across most benchmarks. Claude Haiku 4.5 is made by Anthropic and Gemini 1.5 Flash is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Haiku 4.5 compare to Gemini 1.5 Flash in benchmarks?

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%. Gemini 1.5 Flash scores XSTest: 97.0%, FLEURS: 90.4%, HellaSwag: 86.5%, GSM8k: 86.2%, BIG-Bench Hard: 85.5%.

Is Claude Haiku 4.5 cheaper than Gemini 1.5 Flash?

Gemini 1.5 Flash is 6.7x cheaper for input tokens. Claude Haiku 4.5 costs $1.00/M input and $5.00/M output via anthropic. Gemini 1.5 Flash costs $0.15/M input and $0.60/M output via google.

What are the context window sizes for Claude Haiku 4.5 and Gemini 1.5 Flash?

Claude Haiku 4.5 supports 200K tokens and Gemini 1.5 Flash supports 1.0M 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 4.5 and Gemini 1.5 Flash?

Key differences include context window (200K vs 1.0M), input pricing ($1.00 vs $0.15/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 4.5 and Gemini 1.5 Flash?

Claude Haiku 4.5 is developed by Anthropic and Gemini 1.5 Flash is developed by Google.

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