Model Comparison

Claude 3 Opus vs Gemini 1.5 Flash 8BWhich is better in 2026?

Claude 3 Opus significantly outperforms across most benchmarks. Gemini 1.5 Flash 8B is 235.3x cheaper per token.

Verdict: Claude 3 Opus vs Gemini 1.5 Flash 8B — which is better?

Claude 3 Opus (by Anthropic) and Gemini 1.5 Flash 8B (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 3 Opus outperforms in 3 benchmarks (GPQA, MATH, MMLU-Pro), while Gemini 1.5 Flash 8B is better at 0 benchmarks. Claude 3 Opus significantly outperforms across most benchmarks.

On price, Gemini 1.5 Flash 8B is roughly 235.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 1.5 Flash 8B also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude 3 Opus if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks

Choose Gemini 1.5 Flash 8B if…

  • cost matters — it's about 235.3x 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 Mar 2024

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Claude 3 Opus outperforms in 3 benchmarks (GPQA, MATH, MMLU-Pro), while Gemini 1.5 Flash 8B is better at 0 benchmarks.

Claude 3 Opus significantly outperforms across most benchmarks.

Thu Jul 02 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 1.5 Flash 8B costs less

For input processing, Claude 3 Opus ($15.00/1M tokens) is 214.3x more expensive than Gemini 1.5 Flash 8B ($0.07/1M tokens).

For output processing, Claude 3 Opus ($75.00/1M tokens) is 250.0x more expensive than Gemini 1.5 Flash 8B ($0.30/1M tokens).

In conclusion, Claude 3 Opus is more expensive than Gemini 1.5 Flash 8B.*

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

Lowest available price from all providers
Thu Jul 02 2026 • llm-stats.com
Anthropic
Claude 3 Opus
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
Google
Gemini 1.5 Flash 8B
Input tokens$0.07
Output tokens$0.30
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 1.5 Flash 8B 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 8B is limited to 8,192 tokens.

Anthropic
Claude 3 Opus
Input200,000 tokens
Output200,000 tokens
Google
Gemini 1.5 Flash 8B
Input1,048,576 tokens
Output8,192 tokens
Thu Jul 02 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3 Opus and Gemini 1.5 Flash 8B support multimodal inputs.

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

Claude 3 Opus

Text
Images
Audio
Video

Gemini 1.5 Flash 8B

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 Opus

Proprietary

Closed source

Gemini 1.5 Flash 8B

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Opus was released on 2024-02-29, while Gemini 1.5 Flash 8B was released on 2024-03-15.

Gemini 1.5 Flash 8B is 1 month newer than Claude 3 Opus.

Claude 3 Opus

Feb 29, 2024

2.3 years ago

Gemini 1.5 Flash 8B

Mar 15, 2024

2.3 years ago

2w newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash 8B has a documented knowledge cutoff of 2024-10-01, while Claude 3 Opus's cutoff date is not specified.

We can confirm Gemini 1.5 Flash 8B's training data extends to 2024-10-01, but cannot make a direct comparison without Claude 3 Opus's cutoff date.

Claude 3 Opus

—

Gemini 1.5 Flash 8B

Oct 2024

Provider Availability

Claude 3 Opus is available from Anthropic, Bedrock, Google. Gemini 1.5 Flash 8B is available from Google.

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

Gemini 1.5 Flash 8B

google logo
Google
Input Price:Input: $0.07/1MOutput Price:Output: $0.30/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Higher GPQA score (50.4% vs 38.4%)
Higher MATH score (60.1% vs 58.7%)
Higher MMLU-Pro score (68.5% vs 58.7%)
Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
AnthropicClaude 3 Opus
GoogleGemini 1.5 Flash 8B
Compare in Playground

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude 3 Opus and Gemini 1.5 Flash 8B side-by-side, then vote on the output you prefer.

Claude 3 Opus
✓ Preferred
Gemini 1.5 Flash 8B
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude 3 Opus
Google
Gemini 1.5 Flash 8B

FAQ

Common questions about Claude 3 Opus vs Gemini 1.5 Flash 8B.

Which is better, Claude 3 Opus or Gemini 1.5 Flash 8B?

Claude 3 Opus significantly outperforms across most benchmarks. Claude 3 Opus is made by Anthropic and Gemini 1.5 Flash 8B is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude 3 Opus compare to Gemini 1.5 Flash 8B in benchmarks?

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 8B scores XSTest: 92.6%, FLEURS: 86.4%, Natural2Code: 75.5%, WMT23: 72.6%, Video-MME: 66.2%.

Is Claude 3 Opus cheaper than Gemini 1.5 Flash 8B?

Gemini 1.5 Flash 8B is 214.3x cheaper for input tokens. Claude 3 Opus costs $15.00/M input and $75.00/M output via anthropic. Gemini 1.5 Flash 8B costs $0.07/M input and $0.30/M output via google.

What are the context window sizes for Claude 3 Opus and Gemini 1.5 Flash 8B?

Claude 3 Opus supports 200K tokens and Gemini 1.5 Flash 8B 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 Opus and Gemini 1.5 Flash 8B?

Key differences include context window (200K vs 1.0M), input pricing ($15.00 vs $0.07/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3 Opus and Gemini 1.5 Flash 8B?

Claude 3 Opus is developed by Anthropic and Gemini 1.5 Flash 8B is developed by Google.

Related comparisons