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Claude 3.5 Sonnet vs Gemini 2.0 Flash

Claude 3.5 Sonnet and Gemini 2.0 Flash are closely matched at 19.4 and 16.5 on the LLM Stats Score. Gemini 2.0 Flash is 34.3x cheaper per token.

Anthropic · Google · Updated for 2026

Which is better?

Claude 3.5 Sonnet and Gemini 2.0 Flash are closely matched on the overall LLM Stats Score at 19.4 and 16.5.

The models split the 4 individual benchmarks reported for both models evenly.

On price, Gemini 2.0 Flash is roughly 34.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 2.0 Flash also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude 3.5 Sonnet

  • you want predictable pricing at $3.00/M input and $15.00/M output

Choose Gemini 2.0 Flash

  • cost matters — it's about 34.3x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Dec 2024

At a glance

The differences that matter most.

Claude 3.5 Sonnet
Anthropic
Gemini 2.0 Flash
Google
Core performance indexes
LLM Stats Score
19.4
#189
16.5
#203
Reasoning
20.4
#171
15.9
#202
Coding
11.6
#141
1.7
#212
Cost, coverage & limits
Benchmark wins
2 of 4
2 of 4
Input price
$3.00 / M
$0.10 / M
Output price
$15.00 / M
$0.40 / M
Context window
200,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Claude 3.5 Sonnet
Gemini 2.0 Flash
Math
23.4#120
23.4#119
Vision
15.1#82
8.5#128
Multimodal
18.3#65
14.1#89
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

19 reported for Claude 3.5 Sonnet · 13 for Gemini 2.0 Flash

4 shared

Claude 3.5 Sonnet outperforms in 2 benchmarks (GPQA, MMLU-Pro), while Gemini 2.0 Flash is better at 2 benchmarks (MATH, MMMU).

Both models are evenly matched across the benchmarks.

Sat Aug 29 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Gemini 2.0 Flash costs less

For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 30.0x more expensive than Gemini 2.0 Flash ($0.10/1M tokens).

For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 37.5x more expensive than Gemini 2.0 Flash ($0.40/1M tokens).

In conclusion, Claude 3.5 Sonnet is more expensive than Gemini 2.0 Flash.*

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

Lowest available price from all providers
Sat Aug 29 2026 • llm-stats.com
Anthropic
Claude 3.5 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Google
Gemini 2.0 Flash
Input tokens$0.10
Output tokens$0.40
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 2.0 Flash accepts 1,048,576 input tokens compared to Claude 3.5 Sonnet's 200,000 tokens. Claude 3.5 Sonnet can generate longer responses up to 200,000 tokens, while Gemini 2.0 Flash is limited to 8,192 tokens.

Anthropic
Claude 3.5 Sonnet
Input200,000 tokens
Output200,000 tokens
Google
Gemini 2.0 Flash
Input1,048,576 tokens
Output8,192 tokens
Sat Aug 29 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude 3.5 Sonnet and Gemini 2.0 Flash support multimodal inputs.

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

Claude 3.5 Sonnet

Text
Images
Audio
Video

Gemini 2.0 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 3.5 Sonnet

Proprietary

Closed source

Gemini 2.0 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-10-22, while Gemini 2.0 Flash was released on 2024-12-01.

Gemini 2.0 Flash is 1 month newer than Claude 3.5 Sonnet.

Claude 3.5 Sonnet

Oct 22, 2024

1.8 years ago

Gemini 2.0 Flash

Dec 1, 2024

1.7 years ago

1mo newer

Knowledge Cutoff

When training data ends

Gemini 2.0 Flash has a documented knowledge cutoff of 2024-08-01, while Claude 3.5 Sonnet's cutoff date is not specified.

We can confirm Gemini 2.0 Flash's training data extends to 2024-08-01, but cannot make a direct comparison without Claude 3.5 Sonnet's cutoff date.

Claude 3.5 Sonnet

—

Gemini 2.0 Flash

Aug 2024

Provider Availability

Claude 3.5 Sonnet is available from Anthropic, Bedrock, Google. Gemini 2.0 Flash is available from Google.

Claude 3.5 Sonnet

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
google logo
Google
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Gemini 2.0 Flash

google logo
Google
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude 3.5 Sonnet and Gemini 2.0 Flash side-by-side, then vote on the output you prefer.

Claude 3.5 Sonnet
✓ Preferred
Gemini 2.0 Flash
Open in Playground

FAQ

Common questions about Claude 3.5 Sonnet vs Gemini 2.0 Flash.

Which is better, Claude 3.5 Sonnet or Gemini 2.0 Flash?

Claude 3.5 Sonnet and Gemini 2.0 Flash are closely matched on the LLM Stats Score at 19.4 and 16.5. Claude 3.5 Sonnet is made by Anthropic and Gemini 2.0 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 3.5 Sonnet compare to Gemini 2.0 Flash in benchmarks?

Claude 3.5 Sonnet scores GSM8k: 96.4%, DocVQA: 95.2%, AI2D: 94.7%, HumanEval: 93.7%, BIG-Bench Hard: 93.1%. Gemini 2.0 Flash scores Natural2Code: 92.9%, MATH: 89.7%, FACTS Grounding: 83.6%, MMLU-Pro: 76.4%, EgoSchema: 71.5%.

Is Claude 3.5 Sonnet cheaper than Gemini 2.0 Flash?

Gemini 2.0 Flash is 30.0x cheaper for input tokens. Claude 3.5 Sonnet costs $3.00/M input and $15.00/M output via anthropic. Gemini 2.0 Flash costs $0.10/M input and $0.40/M output via google.

What are the context window sizes for Claude 3.5 Sonnet and Gemini 2.0 Flash?

Claude 3.5 Sonnet supports 200K tokens and Gemini 2.0 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 3.5 Sonnet and Gemini 2.0 Flash?

Key differences include LLM Stats Score (19.4 vs 16.5), context window (200K vs 1.0M), input pricing ($3.00 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3.5 Sonnet and Gemini 2.0 Flash?

Claude 3.5 Sonnet is developed by Anthropic and Gemini 2.0 Flash is developed by Google.

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