Model Comparison

Gemini 3 Flash vs Claude Opus 4Which is better in 2026?

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is 26.7x cheaper per token.

Verdict: Gemini 3 Flash vs Claude Opus 4 — which is better?

Gemini 3 Flash (by Google) and Claude Opus 4 (by Anthropic) 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.

Gemini 3 Flash outperforms in 5 benchmarks (AIME 2025, ARC-AGI v2, GPQA, MMMLU, SWE-Bench Verified), while Claude Opus 4 is better at 0 benchmarks. Gemini 3 Flash significantly outperforms across most benchmarks.

On price, Gemini 3 Flash is roughly 26.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3 Flash also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 3 Flash if…

  • you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
  • cost matters — it's about 26.7x cheaper per token
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Dec 2025

Choose Claude Opus 4 if…

  • you want predictable pricing at $15.00/M input and $75.00/M output
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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Gemini 3 Flash outperforms in 5 benchmarks (AIME 2025, ARC-AGI v2, GPQA, MMMLU, SWE-Bench Verified), while Claude Opus 4 is better at 0 benchmarks.

Gemini 3 Flash significantly outperforms across most benchmarks.

Mon Jun 08 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3 Flash costs less

For input processing, Gemini 3 Flash ($0.50/1M tokens) is 30.0x cheaper than Claude Opus 4 ($15.00/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 25.0x cheaper than Claude Opus 4 ($75.00/1M tokens).

In conclusion, Claude Opus 4 is more expensive than Gemini 3 Flash.*

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

Lowest available price from all providers
Mon Jun 08 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
Anthropic
Claude Opus 4
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3 Flash accepts 1,000,000 input tokens compared to Claude Opus 4's 200,000 tokens. Gemini 3 Flash can generate longer responses up to 65,536 tokens, while Claude Opus 4 is limited to 32,000 tokens.

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
Anthropic
Claude Opus 4
Input200,000 tokens
Output32,000 tokens
Mon Jun 08 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and Claude Opus 4 support multimodal inputs.

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

Gemini 3 Flash

Text
Images
Audio
Video

Claude Opus 4

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 3 Flash

Proprietary

Closed source

Claude Opus 4

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while Claude Opus 4 was released on 2025-05-22.

Gemini 3 Flash is 7 months newer than Claude Opus 4.

Gemini 3 Flash

Dec 17, 2025

5 months ago

6mo newer
Claude Opus 4

May 22, 2025

1.0 years ago

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while Claude Opus 4's cutoff date is not specified.

We can confirm Gemini 3 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without Claude Opus 4's cutoff date.

Gemini 3 Flash

Jan 2025

Claude Opus 4

—

Provider Availability

Gemini 3 Flash is available from Google. Claude Opus 4 is available from Anthropic, Bedrock, Google.

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M

Claude Opus 4

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 (1,000,000 tokens)
Less expensive input tokens
Less expensive output tokens
Higher AIME 2025 score (99.7% vs 75.5%)
Higher ARC-AGI v2 score (33.6% vs 8.6%)
Higher GPQA score (90.4% vs 79.6%)
Higher MMMLU score (91.8% vs 88.8%)
Higher SWE-Bench Verified score (78.0% vs 72.5%)
Anthropic

No standout differentiators in the data we have for this pair.

GoogleGemini 3 Flash
AnthropicClaude Opus 4
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Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
Anthropic
Claude Opus 4

FAQ

Common questions about Gemini 3 Flash vs Claude Opus 4.

Which is better, Gemini 3 Flash or Claude Opus 4?

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is made by Google and Claude Opus 4 is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3 Flash compare to Claude Opus 4 in benchmarks?

Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%. Claude Opus 4 scores MMMLU: 88.8%, TAU-bench Retail: 81.4%, GPQA: 79.6%, MMMU (validation): 76.5%, AIME 2025: 75.5%.

Is Gemini 3 Flash cheaper than Claude Opus 4?

Gemini 3 Flash is 30.0x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. Claude Opus 4 costs $15.00/M input and $75.00/M output via anthropic.

What are the context window sizes for Gemini 3 Flash and Claude Opus 4?

Gemini 3 Flash supports 1.0M tokens and Claude Opus 4 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3 Flash and Claude Opus 4?

Key differences include context window (1.0M vs 200K), input pricing ($0.50 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Flash and Claude Opus 4?

Gemini 3 Flash is developed by Google and Claude Opus 4 is developed by Anthropic.

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