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Claude Haiku 5.5 vs Gemini 2.5 Flash

Claude Haiku 5.5 leads the LLM Stats Score 50.0 to 21.7. Claude Haiku 5.5 is 4.3x cheaper per token.

Anthropic · Google · Updated for 2026

Which is better?

Claude Haiku 5.5 leads the overall LLM Stats Score 50.0 to 21.7, ranking #19 overall.

On price, Claude Haiku 5.5 is roughly 4.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

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 4.3x cheaper per token
  • you want the most recent training data — it shipped Oct 2026

Choose Gemini 2.5 Flash

  • you want predictable pricing at $0.30/M input and $2.50/M output

At a glance

The differences that matter most.

Claude Haiku 5.5
Anthropic
Gemini 2.5 Flash
Google
Core performance indexes
LLM Stats Score
50.0
#19
21.7
#199
Reasoning
47.2
#27
21.4
#196
Coding
40.2
#13
8.3
#194
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.10 / M
$0.30 / M
Output price
$0.50 / M
$2.50 / M
Context window
1,000,000
1,000,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Claude Haiku 5.5
Gemini 2.5 Flash
Math
25.7#110
16.2#214
Vision
30.4#33
10.9#122
Multimodal
31.4#27
19.5#80
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

36 reported for Claude Haiku 5.5 · 14 for Gemini 2.5 Flash

No common benchmarks found

Claude Haiku 5.5 and Gemini 2.5 Flashdon'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 3.0x cheaper than Gemini 2.5 Flash ($0.30/1M tokens).

For output processing, Claude Haiku 5.5 ($0.50/1M tokens) is 5.0x cheaper than Gemini 2.5 Flash ($2.50/1M tokens).

In conclusion, Gemini 2.5 Flash 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
Google
Gemini 2.5 Flash
Input tokens$0.30
Output tokens$2.50
Best providerDeepinfra
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Both models have the same input context window of 1,000,000 tokens. Gemini 2.5 Flash can generate longer responses up to 1,000,000 tokens, while Claude Haiku 5.5 is limited to 128,000 tokens.

Anthropic
Claude Haiku 5.5
Input1,000,000 tokens
Output128,000 tokens
Google
Gemini 2.5 Flash
Input1,000,000 tokens
Output1,000,000 tokens
Thu Oct 08 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Haiku 5.5 and Gemini 2.5 Flash 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

Gemini 2.5 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 5.5

Proprietary

Closed source

Gemini 2.5 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Haiku 5.5 was released on 2026-10-07, while Gemini 2.5 Flash was released on 2025-05-20.

Claude Haiku 5.5 is 17 months newer than Gemini 2.5 Flash.

Claude Haiku 5.5

Oct 7, 2026

1 days ago

1.4yr newer
Gemini 2.5 Flash

May 20, 2025

1.4 years ago

Knowledge Cutoff

When training data ends

Claude Haiku 5.5 has a knowledge cutoff of 2026-06-01, while Gemini 2.5 Flash has a cutoff of 2025-01-31.

Claude Haiku 5.5 has more recent training data (up to 2026-06-01), making it potentially better informed about events through that date compared to Gemini 2.5 Flash (2025-01-31).

Claude Haiku 5.5

Jun 2026

1.4 yr newer
Gemini 2.5 Flash

Jan 2025

Provider Availability

Claude Haiku 5.5 is available from Anthropic. Gemini 2.5 Flash is available from DeepInfra, Google.

Claude Haiku 5.5

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

Gemini 2.5 Flash

deepinfra logo
Deepinfra
Input Price:Input: $0.30/1MOutput Price:Output: $2.50/1M
google logo
Google
Input Price:Input: $0.30/1MOutput Price:Output: $2.50/1M
* 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 Gemini 2.5 Flash side-by-side, then vote on the output you prefer.

Claude Haiku 5.5
✓ Preferred
Gemini 2.5 Flash
Open in Playground

FAQ

Common questions about Claude Haiku 5.5 vs Gemini 2.5 Flash.

Which is better, Claude Haiku 5.5 or Gemini 2.5 Flash?

Claude Haiku 5.5 leads the LLM Stats Score 50.0 to 21.7. Claude Haiku 5.5 is made by Anthropic and Gemini 2.5 Flash is made by Google. 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 Gemini 2.5 Flash 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%. Gemini 2.5 Flash scores Global-MMLU-Lite: 88.4%, AIME 2024: 88.0%, FACTS Grounding: 85.3%, GPQA: 82.8%, MMMU: 79.7%.

Is Claude Haiku 5.5 cheaper than Gemini 2.5 Flash?

Claude Haiku 5.5 is 3.0x cheaper for input tokens. Claude Haiku 5.5 costs $0.10/M input and $0.50/M output via anthropic. Gemini 2.5 Flash costs $0.30/M input and $2.50/M output via deepinfra.

What are the context window sizes for Claude Haiku 5.5 and Gemini 2.5 Flash?

Claude Haiku 5.5 supports 1.0M tokens and Gemini 2.5 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 5.5 and Gemini 2.5 Flash?

Key differences include LLM Stats Score (50.0 vs 21.7), input pricing ($0.10 vs $0.30/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 5.5 and Gemini 2.5 Flash?

Claude Haiku 5.5 is developed by Anthropic and Gemini 2.5 Flash is developed by Google.

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