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Claude Opus 4 vs Gemini 3.5 Flash-Lite

Claude Opus 4 and Gemini 3.5 Flash-Lite are closely matched at 27.7 and 29.8 on the LLM Stats Score. Gemini 3.5 Flash-Lite is 35.3x cheaper per token.

Anthropic · Google · Updated for 2026

Which is better?

Claude Opus 4 and Gemini 3.5 Flash-Lite are closely matched on the overall LLM Stats Score at 27.7 and 29.8.

On price, Gemini 3.5 Flash-Lite is roughly 35.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3.5 Flash-Lite 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 Opus 4

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

Choose Gemini 3.5 Flash-Lite

  • cost matters — it's about 35.3x 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 Jul 2026

At a glance

The differences that matter most.

Claude Opus 4
Anthropic
Gemini 3.5 Flash-Lite
Google
Core performance indexes
LLM Stats Score
27.7
#142
29.8
#127
Reasoning
27.7
#135
25.8
#152
Coding
17.4
#123
15.7
#132
Agents
8.3
#136
15.3
#87
Cost, coverage & limits
Benchmark wins
—
—
Input price
$15.00 / M
$0.30 / M
Output price
$75.00 / M
$2.50 / M
Context window
200,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude Opus 4
Gemini 3.5 Flash-Lite
Vision
12.5#101
19.3#76
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for Claude Opus 4 · 6 for Gemini 3.5 Flash-Lite

No common benchmarks found

Claude Opus 4 and Gemini 3.5 Flash-Litedon'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

Gemini 3.5 Flash-Lite costs less

For input processing, Claude Opus 4 ($15.00/1M tokens) is 50.0x more expensive than Gemini 3.5 Flash-Lite ($0.30/1M tokens).

For output processing, Claude Opus 4 ($75.00/1M tokens) is 30.0x more expensive than Gemini 3.5 Flash-Lite ($2.50/1M tokens).

In conclusion, Claude Opus 4 is more expensive than Gemini 3.5 Flash-Lite.*

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

Lowest available price from all providers
Tue Sep 22 2026 • llm-stats.com
Anthropic
Claude Opus 4
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
Google
Gemini 3.5 Flash-Lite
Input tokens$0.30
Output tokens$2.50
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3.5 Flash-Lite accepts 1,048,576 input tokens compared to Claude Opus 4's 200,000 tokens. Gemini 3.5 Flash-Lite can generate longer responses up to 65,536 tokens, while Claude Opus 4 is limited to 32,000 tokens.

Anthropic
Claude Opus 4
Input200,000 tokens
Output32,000 tokens
Google
Gemini 3.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Opus 4 and Gemini 3.5 Flash-Lite support multimodal inputs.

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

Claude Opus 4

Text
Images
Audio
Video

Gemini 3.5 Flash-Lite

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 Opus 4

Proprietary

Closed source

Gemini 3.5 Flash-Lite

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4 was released on 2025-05-22, while Gemini 3.5 Flash-Lite was released on 2026-07-21.

Gemini 3.5 Flash-Lite is 14 months newer than Claude Opus 4.

Claude Opus 4

May 22, 2025

1.3 years ago

Gemini 3.5 Flash-Lite

Jul 21, 2026

2 months ago

1.2yr newer

Knowledge Cutoff

When training data ends

Gemini 3.5 Flash-Lite has a documented knowledge cutoff of 2026-03-31, while Claude Opus 4's cutoff date is not specified.

We can confirm Gemini 3.5 Flash-Lite's training data extends to 2026-03-31, but cannot make a direct comparison without Claude Opus 4's cutoff date.

Claude Opus 4

—

Gemini 3.5 Flash-Lite

Mar 2026

Provider Availability

Claude Opus 4 is available from Anthropic, Bedrock, Google. Gemini 3.5 Flash-Lite is available from Google.

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

Gemini 3.5 Flash-Lite

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?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Opus 4 and Gemini 3.5 Flash-Lite side-by-side, then vote on the output you prefer.

Claude Opus 4
✓ Preferred
Gemini 3.5 Flash-Lite
Open in Playground

FAQ

Common questions about Claude Opus 4 vs Gemini 3.5 Flash-Lite.

Which is better, Claude Opus 4 or Gemini 3.5 Flash-Lite?

Claude Opus 4 and Gemini 3.5 Flash-Lite are closely matched on the LLM Stats Score at 27.7 and 29.8. Claude Opus 4 is made by Anthropic and Gemini 3.5 Flash-Lite 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 Opus 4 compare to Gemini 3.5 Flash-Lite in benchmarks?

Claude Opus 4 scores MMMLU: 88.8%, TAU-bench Retail: 81.4%, GPQA: 79.6%, MMMU (validation): 76.5%, AIME 2025: 75.5%. Gemini 3.5 Flash-Lite scores CharXiv-R: 76.5%, OSWorld-Verified: 74.0%, SWE-Bench Pro: 54.2%, Terminal-Bench 2.1: 54.0%, MLE-Bench: 39.2%.

Is Claude Opus 4 cheaper than Gemini 3.5 Flash-Lite?

Gemini 3.5 Flash-Lite is 50.0x cheaper for input tokens. Claude Opus 4 costs $15.00/M input and $75.00/M output via anthropic. Gemini 3.5 Flash-Lite costs $0.30/M input and $2.50/M output via google.

What are the context window sizes for Claude Opus 4 and Gemini 3.5 Flash-Lite?

Claude Opus 4 supports 200K tokens and Gemini 3.5 Flash-Lite 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 Opus 4 and Gemini 3.5 Flash-Lite?

Key differences include LLM Stats Score (27.7 vs 29.8), context window (200K vs 1.0M), input pricing ($15.00 vs $0.30/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4 and Gemini 3.5 Flash-Lite?

Claude Opus 4 is developed by Anthropic and Gemini 3.5 Flash-Lite is developed by Google.

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