Model Comparison

Gemini 1.5 Flash vs Claude 3 Opus

Claude 3 Opus significantly outperforms across most benchmarks. Gemini 1.5 Flash is 114.3x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

9 benchmarks

Gemini 1.5 Flash outperforms in 2 benchmarks (GPQA, MATH), while Claude 3 Opus is better at 7 benchmarks (BIG-Bench Hard, GSM8k, HellaSwag, HumanEval, MGSM, MMLU, MMLU-Pro).

Claude 3 Opus significantly outperforms across most benchmarks.

Thu Apr 02 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, Gemini 1.5 Flash ($0.15/1M tokens) is 100.0x cheaper than Claude 3 Opus ($15.00/1M tokens).

For output processing, Gemini 1.5 Flash ($0.60/1M tokens) is 125.0x cheaper than Claude 3 Opus ($75.00/1M tokens).

In conclusion, Claude 3 Opus 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 Apr 02 2026 • llm-stats.com
Google
Gemini 1.5 Flash
Input tokens$0.15
Output tokens$0.60
Best providerGoogle
Anthropic
Claude 3 Opus
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
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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 3 Opus's 200,000 tokens. Claude 3 Opus can generate longer responses up to 200,000 tokens, while Gemini 1.5 Flash is limited to 8,192 tokens.

Google
Gemini 1.5 Flash
Input1,048,576 tokens
Output8,192 tokens
Anthropic
Claude 3 Opus
Input200,000 tokens
Output200,000 tokens
Thu Apr 02 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 1.5 Flash and Claude 3 Opus support multimodal inputs.

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

Gemini 1.5 Flash

Text
Images
Audio
Video

Claude 3 Opus

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.

Gemini 1.5 Flash

Proprietary

Closed source

Claude 3 Opus

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Flash was released on 2024-05-01, while Claude 3 Opus was released on 2024-02-29.

Gemini 1.5 Flash is 2 months newer than Claude 3 Opus.

Gemini 1.5 Flash

May 1, 2024

1.9 years ago

2mo newer
Claude 3 Opus

Feb 29, 2024

2.1 years ago

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash has a documented knowledge cutoff of 2023-11-01, while Claude 3 Opus's cutoff date is not specified.

We can confirm Gemini 1.5 Flash's training data extends to 2023-11-01, but cannot make a direct comparison without Claude 3 Opus's cutoff date.

Gemini 1.5 Flash

Nov 2023

Claude 3 Opus

—

Provider Availability

Gemini 1.5 Flash is available from Google. Claude 3 Opus is available from Anthropic, Bedrock, Google.

Gemini 1.5 Flash

google logo
Google
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M

Claude 3 Opus

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

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Key Takeaways

Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
Higher GPQA score (51.0% vs 50.4%)
Higher MATH score (77.9% vs 60.1%)
Anthropic
Higher BIG-Bench Hard score (86.8% vs 85.5%)
Higher GSM8k score (95.0% vs 86.2%)
Higher HellaSwag score (95.4% vs 86.5%)
Higher HumanEval score (84.9% vs 74.3%)
Higher MGSM score (90.7% vs 82.6%)
Higher MMLU score (86.8% vs 78.9%)
Higher MMLU-Pro score (68.5% vs 67.3%)
GoogleGemini 1.5 Flash
AnthropicClaude 3 Opus
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Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 1.5 Flash
Anthropic
Claude 3 Opus

FAQ

Common questions about Gemini 1.5 Flash vs Claude 3 Opus

Claude 3 Opus significantly outperforms across most benchmarks. Gemini 1.5 Flash is made by Google and Claude 3 Opus is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Gemini 1.5 Flash scores XSTest: 97.0%, HellaSwag: 86.5%, GSM8k: 86.2%, BIG-Bench Hard: 85.5%, MGSM: 82.6%. Claude 3 Opus scores ARC-C: 96.4%, HellaSwag: 95.4%, GSM8k: 95.0%, MGSM: 90.7%, BIG-Bench Hard: 86.8%.
Gemini 1.5 Flash is 100.0x cheaper for input tokens. Gemini 1.5 Flash costs $0.15/M input and $0.60/M output via google. Claude 3 Opus costs $15.00/M input and $75.00/M output via anthropic.
Gemini 1.5 Flash supports 1.0M tokens and Claude 3 Opus supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (1.0M vs 200K), input pricing ($0.15 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.
Gemini 1.5 Flash is developed by Google and Claude 3 Opus is developed by Anthropic.