Claude Opus 5 vs Gemini 3.8 Flash for 500K-Token Agentic Browser Automation

Claude Opus 5 vs Gemini 3.8 Flash
Complete Comparison: 500,000 input tokens × 2,000 output tokens
Comparison Mode
⚡ 50% Cached

Complete comparison of pricing, performance, and capabilities for 2 leading AI models with 50% Cached.

⚡ Caching Optimized (up to 90% savings) 📊 Batch API
Comparison Criteria Claude Opus 5
Anthropic
Gemini 3.8 Flash
Google
Calculation Results (Current Inputs) (50% cached)
Input Tokens 500,000 500,000
Output Tokens 2,000 2,000
Cost Breakdown
Input Cost $0.625000 (rounded ~ $0.63)Worst $0.093750 (rounded ~ $0.09)Best
Output Cost $0.012500 (rounded ~ $0.01)Worst $0.001875Best
Unit Cost (Audio/OCR) $0.000000 $0.000000
Service Fees $0.000000 $0.000000
Total Cost $0.356250 (rounded ~ $0.36) Most Expensive $0.053438 (rounded ~ $0.05) Best Value
Processing Time 29 minutes, 50.65 seconds Slowest 26 minutes, 20.00 seconds Fastest
Tokens per Second 300Slowest 340Fastest
Time to First Token 300ms Worst 105ms Best
Cost per 1K tokens $0.000710Worst $0.000106Best
Tokens per Dollar 1,409,123Worst Value 9,394,152Best Value
Cost per 1 Million Tokens (Informational)
Input Cost / 1M (Base) $1.250000Worst $0.187500 (rounded ~ $0.19)Best
Output Cost / 1M (Base) $6.250000Worst $0.937500 (rounded ~ $0.94)Best
Input Cost / 1M (Optimized) $0.625000 (rounded ~ $0.63)Worst
Optimizations: 50.0% batch
$0.093750 (rounded ~ $0.09)Best
Optimizations: 50.0% batch
Output Cost / 1M (Optimized) $3.125000 (rounded ~ $3.13)Worst
Optimizations: 50.0% batch
$0.468750 (rounded ~ $0.47)Best
Optimizations: 50.0% batch
Capabilities & Advanced Features
Images Support ✓ Supported ✓ Supported
Video Support ✗ Not Supported ✓ Supported
Audio Support ✗ Not Supported ✓ Supported
Caching Support
50
✓ Supported ✓ Supported
Batch API Support ✓ Supported ✓ Supported
Tool Usage Support ✓ Supported ✓ Supported
Scroll horizontally to see all data

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Select AI Model

Claude Opus 5

AnthropicMax Context: 1,000,000 tokens
$5 / $25 per 1M tokens
50%
Provider-specific multipliers applied after all calculations
Enable for cache discounts
Select platform to enforce context limits
Number of requests (max 1M). Summary view auto-enabled >10k.

Calculate Token Costs

$0.312500 Input Cost
$0.012500 Output Cost
$0.000000 Unit Cost
$0.000000 Search Cost
$0.000000 Request Fee
$0.000000 Tool Fee
$0.000000 Code Execution
502,000Total Tokens
$0.000710Cost per 1K
1,409,123Tokens per $

📊 Advanced Cost Breakdown

Processing Speed

29m 50s Processing Time
300 Tokens/Second
300ms Time to First Token
280 Effective Speed

Model Comparison

Select a model to see comparisons with competitors.

Model Information

Select a model to see detailed information.

🔄 Advanced Options

⚡ Optimization

Flat fee per session (e.g., $0.03 for Code Interpreter)
Hourly storage fee for cached data
First 50 hours free, $0.05/hour after

🧠 Reasoning & Thinking

Manual thinking tokens (billed at output rate)

🔧 Special Modes


📚 Research & Citations

Fee per source cited

🎤 Realtime Audio & Video

Session length for billing
📊 Multiple Models Detected: This page contains data for 2 models. See the detailed comparison table above, and switch between models using tabs below.

Claude Opus 5 Anthropic 1000000

$0.356250 (rounded ~ $0.36)
Total Cost
⚡ 50% Cached 📊 Batch API 🔧 Tools
👁️
Vision/Images
✓ Available
🎧
Audio Processing
✗ Not Available
🎥
Video Analysis
✗ Not Available
🔧
Tool Usage
✓ Available
📄
OCR Support
✗ Not Available
📊
Batch API
✓ Available
⚡
Caching
✓ Available
90% savings

💰 Total Cost Calculation (from Plugin)

Base Cost (No Optimizations) $0.637500 (rounded ~ $0.64) Input: $0.625000 (rounded ~ $0.63)
Output: $0.012500 (rounded ~ $0.01)
Optimized Cost $0.356250 (rounded ~ $0.36) Input: $0.625000 (rounded ~ $0.63)
Output: $0.012500 (rounded ~ $0.01)
Unit: $0.000000
Fees: $0.000000
Total Savings $0.281250 (rounded ~ $0.28) 44.1% discount

Advanced Cost Breakdown (from Plugin)

📊 Batch API
50.0% off
Asynchronous processing discount

Detailed Cost Analysis (from Plugin)

For 500,000 input tokens and 2,000 output tokens:

  • Input Cost: $0.625000 (rounded ~ $0.63)
  • Output Cost: $0.012500 (rounded ~ $0.01)
  • Total Cost: $0.356250 (rounded ~ $0.36)
  • Cost per 1K tokens: $0.000710
  • Tokens per dollar: 1,409,123 tokens
  • Context Window: 1000000 tokens

Speed & Performance Analysis

With a processing speed of 300 tokens per second and 300ms time to first token:

  • Processing Time: 29 minutes, 50.65 seconds
  • Latency: 300 milliseconds to first token
  • Base Throughput: 300 tokens/second
  • Effective Throughput: 280 tokens/second (temperature-adjusted)

Best Use Cases

Choose Claude Opus 5 for complexhigh-reliability agentic tasks requiring deep reasoning. Use Gemini 3.8 Flash for high-concurrencyhigh-throughput automated workflows.

Want this applied to YOUR actual stack?

This calculator shows the math for Claude Opus 5. Your decision needs more — current infrastructure, compliance requirements, actual workload patterns, volume tiers — that change which model is right for you.

Get a $39 personalized AI Architecture Audit. PDF tailored to your stack, delivered in under 60 seconds. 7-day no-questions-asked refund.

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Gemini 3.8 Flash Google 1048576

$0.053438 (rounded ~ $0.05)
Total Cost
⚡ 50% Cached 📊 Batch API 🔧 Tools
👁️
Vision/Images
✓ Available
🎧
Audio Processing
✓ Available
🎥
Video Analysis
✓ Available
🔧
Tool Usage
✓ Available
📄
OCR Support
✗ Not Available
📊
Batch API
✓ Available
⚡
Caching
✓ Available
90% savings

💰 Total Cost Calculation (from Plugin)

Base Cost (No Optimizations) $0.095625 (rounded ~ $0.10) Input: $0.093750 (rounded ~ $0.09)
Output: $0.001875
Optimized Cost $0.053438 (rounded ~ $0.05) Input: $0.093750 (rounded ~ $0.09)
Output: $0.001875
Unit: $0.000000
Fees: $0.000000
Total Savings $0.042188 (rounded ~ $0.04) 44.1% discount

Advanced Cost Breakdown (from Plugin)

📊 Batch API
50.0% off
Asynchronous processing discount

Detailed Cost Analysis (from Plugin)

For 500,000 input tokens and 2,000 output tokens:

  • Input Cost: $0.093750 (rounded ~ $0.09)
  • Output Cost: $0.001875
  • Total Cost: $0.053438 (rounded ~ $0.05)
  • Cost per 1K tokens: $0.000106
  • Tokens per dollar: 9,394,152 tokens
  • Context Window: 1048576 tokens

Speed & Performance Analysis

With a processing speed of 340 tokens per second and 105ms time to first token:

  • Processing Time: 26 minutes, 20.00 seconds
  • Latency: 105 milliseconds to first token
  • Base Throughput: 340 tokens/second
  • Effective Throughput: 318 tokens/second (temperature-adjusted)

Best Use Cases

Choose Claude Opus 5 for complexhigh-reliability agentic tasks requiring deep reasoning. Use Gemini 3.8 Flash for high-concurrencyhigh-throughput automated workflows.

Want this applied to YOUR actual stack?

This calculator shows the math for Gemini 3.8 Flash. Your decision needs more — current infrastructure, compliance requirements, actual workload patterns, volume tiers — that change which model is right for you.

Get a $39 personalized AI Architecture Audit. PDF tailored to your stack, delivered in under 60 seconds. 7-day no-questions-asked refund.

Get my instant AI audit — $39 →

✨ Market Recommendations AI Model Registry

← Back to Claude Opus 5
📋 Active Input Parameters
Input Tokens: 500,000
Output Tokens: 2,000
Batch API: Enabled (50% discount)
Cached Tokens: 50%
Tools: Enabled
Rank AI Model & Provider Total Cost vs Claude Opus 5 vs Gemini 3.8 Flash
🏆 GPT-5.6 Luna
OpenAI
$0.014350 (rounded ~ $0.01) Best Value ↓ 96% cheaper ↓ 73.1% cheaper
🥈 Gemini 3.1 Flash Lite
Google
$0.017938 (rounded ~ $0.02) ↓ 95% cheaper ↓ 66.4% cheaper
🥉 Gemini 3.5 Flash-Lite
Google
$0.021875 (rounded ~ $0.02) ↓ 93.9% cheaper ↓ 59.1% cheaper
#4 Gemini 2.5 Flash
Google
$0.021875 (rounded ~ $0.02) ↓ 93.9% cheaper ↓ 59.1% cheaper
#5 GPT-6 Luna
OpenAI
$0.028250 (rounded ~ $0.03) ↓ 92.1% cheaper ↓ 47.1% cheaper
#6 Gemini 3.8 Flash
Google
$0.053438 (rounded ~ $0.05) ↓ 85% cheaper Same price
#7 Gemini 3.6 Flash
Google
$0.053438 (rounded ~ $0.05) ↓ 85% cheaper Same price
#8 Claude Haiku 5.5
Anthropic
$0.071250 (rounded ~ $0.07) ↓ 80% cheaper ↑ 33.3% more
#9 Mistral Large 4
Mistral AI
$0.095590 (rounded ~ $0.10) ↓ 73.2% cheaper ↑ 78.9% more
#10 Claude Sonnet 5.5
Anthropic
$0.136250 (rounded ~ $0.14) ↓ 61.8% cheaper ↑ 155% more
#11 Claude Sonnet 5
Anthropic
$0.142500 (rounded ~ $0.14) ↓ 60% cheaper ↑ 166.7% more
#12 Gemini 4 Argon
Google
$0.142500 (rounded ~ $0.14) ↓ 60% cheaper ↑ 166.7% more
#13 Gemini 3.1 Flash
Google
$0.143500 (rounded ~ $0.14) ↓ 59.7% cheaper ↑ 168.5% more
#14 GPT-5.6 Terra
OpenAI
$0.143500 (rounded ~ $0.14) ↓ 59.7% cheaper ↑ 168.5% more
#15 Claude Sonnet 4.6
Anthropic
$0.213750 (rounded ~ $0.21) ↓ 40% cheaper ↑ 300% more
#16 Claude Opus 5.5
Anthropic
$0.272500 (rounded ~ $0.27) ↓ 23.5% cheaper ↑ 409.9% more
#17 GPT-5.6 Sol
OpenAI
$0.285000 (rounded ~ $0.29) ↓ 20% cheaper ↑ 433.3% more
#18 Claude Opus 4.7
Anthropic
$0.356250 (rounded ~ $0.36) Same price ↑ 566.7% more
#19 Claude Opus 4.8
Anthropic
$0.356250 (rounded ~ $0.36) Same price ↑ 566.7% more
#20 Claude Opus 4.6
Anthropic
$0.356250 (rounded ~ $0.36) Same price ↑ 566.7% more
#21 Gemini 2.5 Pro
Google
$0.358750 (rounded ~ $0.36) ↑ 0.7% more ↑ 571.3% more
#22 Grok 4.3
xAI
$0.558000 (rounded ~ $0.56) ↑ 56.6% more ↑ 944.2% more
#23 Grok 4.20 Beta
xAI
$0.558000 (rounded ~ $0.56) ↑ 56.6% more ↑ 944.2% more
#24 GPT-6.1 Sol
OpenAI
$0.565000 (rounded ~ $0.57) ↑ 58.6% more ↑ 957.3% more
#25 GPT-6 Sol
OpenAI
$0.565000 (rounded ~ $0.57) ↑ 58.6% more ↑ 957.3% more
#26 Gemini 3.1 Pro
Google
$0.568000 (rounded ~ $0.57) ↑ 59.4% more ↑ 962.9% more
#27 Claude Fable 5.1
Anthropic
$0.665625 (rounded ~ $0.67) ↑ 86.8% more ↑ 1145.6% more
#28 Claude Mythos 5.1
Anthropic
$0.665625 (rounded ~ $0.67) ↑ 86.8% more ↑ 1145.6% more
#29 GPT-5.4
OpenAI
$0.710000 ↑ 99.3% more ↑ 1228.7% more
#30 GPT-5.4 Thinking
OpenAI
$0.710000 ↑ 99.3% more ↑ 1228.7% more
#31 Claude Fable 5
Anthropic
$0.712500 (rounded ~ $0.71) ↑ 100% more ↑ 1233.3% more
#32 Claude Mythos 5
Anthropic
$0.712500 (rounded ~ $0.71) ↑ 100% more ↑ 1233.3% more
#33 GPT-5.5
OpenAI
$1.420000 ↑ 298.6% more ↑ 2557.3% more
#34 GPT-6 Astra
OpenAI
$2.850000 ↑ 700% more ↑ 5233.3% more
#35 GPT-6 Astra
OpenAI
$2.850000 ↑ 700% more ↑ 5233.3% more
🏆

GPT-5.6 Luna
OpenAI

$0.014350 (rounded ~ $0.01)
vs Claude Opus 5: ↓ 96%
vs Gemini 3.8 Flash: ↓ 73.1%
🥈

Gemini 3.1 Flash Lite
Google

$0.017938 (rounded ~ $0.02)
vs Claude Opus 5: ↓ 95%
vs Gemini 3.8 Flash: ↓ 66.4%
🥉

Gemini 3.5 Flash-Lite
Google

$0.021875 (rounded ~ $0.02)
vs Claude Opus 5: ↓ 93.9%
vs Gemini 3.8 Flash: ↓ 59.1%
#4

Gemini 2.5 Flash
Google

$0.021875 (rounded ~ $0.02)
vs Claude Opus 5: ↓ 93.9%
vs Gemini 3.8 Flash: ↓ 59.1%
#5

GPT-6 Luna
OpenAI

$0.028250 (rounded ~ $0.03)
vs Claude Opus 5: ↓ 92.1%
vs Gemini 3.8 Flash: ↓ 47.1%
#6

Gemini 3.8 Flash
Google

$0.053438 (rounded ~ $0.05)
vs Claude Opus 5: ↓ 85%
vs Gemini 3.8 Flash: Same
#7

Gemini 3.6 Flash
Google

$0.053438 (rounded ~ $0.05)
vs Claude Opus 5: ↓ 85%
vs Gemini 3.8 Flash: Same
#8

Claude Haiku 5.5
Anthropic

$0.071250 (rounded ~ $0.07)
vs Claude Opus 5: ↓ 80%
vs Gemini 3.8 Flash: ↑ 33.3%
#9

Mistral Large 4
Mistral AI

$0.095590 (rounded ~ $0.10)
vs Claude Opus 5: ↓ 73.2%
vs Gemini 3.8 Flash: ↑ 78.9%
#10

Claude Sonnet 5.5
Anthropic

$0.136250 (rounded ~ $0.14)
vs Claude Opus 5: ↓ 61.8%
vs Gemini 3.8 Flash: ↑ 155%
#11

Claude Sonnet 5
Anthropic

$0.142500 (rounded ~ $0.14)
vs Claude Opus 5: ↓ 60%
vs Gemini 3.8 Flash: ↑ 166.7%
#12

Gemini 4 Argon
Google

$0.142500 (rounded ~ $0.14)
vs Claude Opus 5: ↓ 60%
vs Gemini 3.8 Flash: ↑ 166.7%
#13

Gemini 3.1 Flash
Google

$0.143500 (rounded ~ $0.14)
vs Claude Opus 5: ↓ 59.7%
vs Gemini 3.8 Flash: ↑ 168.5%
#14

GPT-5.6 Terra
OpenAI

$0.143500 (rounded ~ $0.14)
vs Claude Opus 5: ↓ 59.7%
vs Gemini 3.8 Flash: ↑ 168.5%
#15

Claude Sonnet 4.6
Anthropic

$0.213750 (rounded ~ $0.21)
vs Claude Opus 5: ↓ 40%
vs Gemini 3.8 Flash: ↑ 300%
#16

Claude Opus 5.5
Anthropic

$0.272500 (rounded ~ $0.27)
vs Claude Opus 5: ↓ 23.5%
vs Gemini 3.8 Flash: ↑ 409.9%
#17

GPT-5.6 Sol
OpenAI

$0.285000 (rounded ~ $0.29)
vs Claude Opus 5: ↓ 20%
vs Gemini 3.8 Flash: ↑ 433.3%
#18

Claude Opus 4.7
Anthropic

$0.356250 (rounded ~ $0.36)
vs Claude Opus 5: Same
vs Gemini 3.8 Flash: ↑ 566.7%
#19

Claude Opus 4.8
Anthropic

$0.356250 (rounded ~ $0.36)
vs Claude Opus 5: Same
vs Gemini 3.8 Flash: ↑ 566.7%
#20

Claude Opus 4.6
Anthropic

$0.356250 (rounded ~ $0.36)
vs Claude Opus 5: Same
vs Gemini 3.8 Flash: ↑ 566.7%
#21

Gemini 2.5 Pro
Google

$0.358750 (rounded ~ $0.36)
vs Claude Opus 5: ↑ 0.7%
vs Gemini 3.8 Flash: ↑ 571.3%
#22

Grok 4.3
xAI

$0.558000 (rounded ~ $0.56)
vs Claude Opus 5: ↑ 56.6%
vs Gemini 3.8 Flash: ↑ 944.2%
#23

Grok 4.20 Beta
xAI

$0.558000 (rounded ~ $0.56)
vs Claude Opus 5: ↑ 56.6%
vs Gemini 3.8 Flash: ↑ 944.2%
#24

GPT-6.1 Sol
OpenAI

$0.565000 (rounded ~ $0.57)
vs Claude Opus 5: ↑ 58.6%
vs Gemini 3.8 Flash: ↑ 957.3%
#25

GPT-6 Sol
OpenAI

$0.565000 (rounded ~ $0.57)
vs Claude Opus 5: ↑ 58.6%
vs Gemini 3.8 Flash: ↑ 957.3%
#26

Gemini 3.1 Pro
Google

$0.568000 (rounded ~ $0.57)
vs Claude Opus 5: ↑ 59.4%
vs Gemini 3.8 Flash: ↑ 962.9%
#27

Claude Fable 5.1
Anthropic

$0.665625 (rounded ~ $0.67)
vs Claude Opus 5: ↑ 86.8%
vs Gemini 3.8 Flash: ↑ 1145.6%
#28

Claude Mythos 5.1
Anthropic

$0.665625 (rounded ~ $0.67)
vs Claude Opus 5: ↑ 86.8%
vs Gemini 3.8 Flash: ↑ 1145.6%
#29

GPT-5.4
OpenAI

$0.710000
vs Claude Opus 5: ↑ 99.3%
vs Gemini 3.8 Flash: ↑ 1228.7%
#30

GPT-5.4 Thinking
OpenAI

$0.710000
vs Claude Opus 5: ↑ 99.3%
vs Gemini 3.8 Flash: ↑ 1228.7%
#31

Claude Fable 5
Anthropic

$0.712500 (rounded ~ $0.71)
vs Claude Opus 5: ↑ 100%
vs Gemini 3.8 Flash: ↑ 1233.3%
#32

Claude Mythos 5
Anthropic

$0.712500 (rounded ~ $0.71)
vs Claude Opus 5: ↑ 100%
vs Gemini 3.8 Flash: ↑ 1233.3%
#33

GPT-5.5
OpenAI

$1.420000
vs Claude Opus 5: ↑ 298.6%
vs Gemini 3.8 Flash: ↑ 2557.3%
#34

GPT-6 Astra
OpenAI

$2.850000
vs Claude Opus 5: ↑ 700%
vs Gemini 3.8 Flash: ↑ 5233.3%
#35

GPT-6 Astra
OpenAI

$2.850000
vs Claude Opus 5: ↑ 700%
vs Gemini 3.8 Flash: ↑ 5233.3%
✨ How recommendations work (v8.6.0): We scan all active models in the registry and only include those that support ALL your current inputs. For token-based models, we check if they can handle your token counts. For special pricing models (OCR, video, audio), we verify they have the correct pricing structure. Features marked requested were in your inputs but not supported by that model. Now using official provider pricing without reseller markups.

Choosing the Right Engine for Autonomous Browser Tasks

For enterprise architects managing high-volume agentic pipelines, the choice between Claude Opus 5 and Gemini 3.8 Flash often comes down to the specific orchestration requirements of the task. At a 500K-token scale, these models offer distinct approaches to complex browser interaction and multi-step reasoning.

Claude Opus 5 excels in environments where precision and complex instruction following are paramount. Its reasoning capabilities, particularly when dealing with non-standard DOM structures or brittle web interfaces, make it a robust choice for mission-critical automation where reliability is the primary budget driver. Enterprise teams often find that Opus 5’s ability to plan and execute multi-step tool calls with minimal oversight reduces the need for human intervention, which is a significant factor in long-term operational efficiency.

Gemini 3.8 Flash, conversely, is built for scale and throughput. Its performance in agentic benchmarks, particularly those requiring rapid-fire tool use and terminal interaction, makes it a compelling option for high-concurrency pipelines. The model thrives in environments where minimizing latency across hundreds of thousands of daily sessions is the key performance indicator. While it may require more granular guardrails to match the consistency of a frontier-tier model like Opus 5, the efficiency gains at scale are substantial for teams managing 100M+ tokens per month.

When deciding between these two for your browser automation stack, consider whether your bottleneck is task reliability or session throughput. For complex, high-stakes tasks, Opus 5 provides the extra layer of reasoning necessary to reduce error rates. For high-volume, high-concurrency workloads, Gemini 3.8 Flash delivers the rapid performance needed to keep costs manageable at enterprise scale.

Frequently Asked Questions

How accurate are these AI model cost calculations?
Our calculations are based on official pricing from each provider (Google, OpenAI, Anthropic, Meta, xAI, Perplexity, DeepSeek, Mistral) and are updated regularly. We account for all factors including multimodal inputs, caching discounts, batch API pricing, tool usage multipliers, OCR processing, audio minutes, silence fees, and research mode pricing. Note: Reseller markups and dedicated instance multipliers have been removed to reflect official provider pricing.
How does prompt caching work?
Caching discounts vary by provider: Google and OpenAI offer 90% discounts on cached input tokens. Anthropic uses write (1.25x) and read (0.10x) multipliers. Savings are applied to the token portion only, not unit-based fees.
How do Market Recommendations work (v8.6.0)?
Our recommendation engine scans the entire model registry and only includes models that support ALL your current input parameters (tokens, images, video, audio, OCR, tools, batch API, etc.). It calculates exact costs with your settings and sorts by price, showing you the best value options that can handle your complete workflow. Special pricing models (OCR, video, audio, image generation) are properly handled and only appear when their specific input types are requested. v8.6.0 removes reseller markups (20% buffer) and dedicated instance multipliers to reflect official provider pricing.
What is the YemHub AI Calculator Tool?
The YemHub AI Calculator is the most comprehensive tool for estimating costs and comparing performance metrics across 50+ AI models. It calculates token-based pricing, analyzes multimodal processing, accounts for state-dependent pricing (context cliffs, tiered tunnels), provides optimization recommendations, and now offers intelligent market matching to find the best alternatives for your specific needs.