Gemini 3.8 Flash vs Claude Fable 5.1: 500K-Token Curriculum Pipelines

Gemini 3.8 Flash vs Claude Fable 5.1
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 Gemini 3.8 Flash
Google
Claude Fable 5.1
Anthropic
Calculation Results (Current Inputs) (50% cached)
Input Tokens 500,000 500,000
Output Tokens 2,000 2,000
Cost Breakdown
Input Cost $0.093750 (rounded ~ $0.09)Best $1.250000Worst
Output Cost $0.001875Best $0.025000 (rounded ~ $0.03)Worst
Unit Cost (Audio/OCR) $0.000000 $0.000000
Service Fees $0.000000 $0.000000
Total Cost $0.053438 (rounded ~ $0.05) Best Value $0.665625 (rounded ~ $0.67) Most Expensive
Processing Time 26 minutes, 20.00 seconds Fastest 42 minutes, 37.99 seconds Slowest
Tokens per Second 340Fastest 210Slowest
Time to First Token 105ms Best 430ms Worst
Cost per 1K tokens $0.000106Best $0.001326Worst
Tokens per Dollar 9,394,152Best Value 754,178Worst Value
Cost per 1 Million Tokens (Informational)
Input Cost / 1M (Base) $0.187500 (rounded ~ $0.19)Best $2.500000Worst
Output Cost / 1M (Base) $0.937500 (rounded ~ $0.94)Best $12.500000Worst
Input Cost / 1M (Optimized) $0.093750 (rounded ~ $0.09)Best
Optimizations: 50.0% batch
$1.250000Worst
Optimizations: 50.0% batch
Output Cost / 1M (Optimized) $0.468750 (rounded ~ $0.47)Best
Optimizations: 50.0% batch
$6.250000Worst
Optimizations: 50.0% batch
Capabilities & Advanced Features
Images Support ✓ Supported ✓ Supported
Video Support ✓ Supported ✗ Not Supported
Audio Support ✓ Supported ✗ Not Supported
Caching Support
50
✓ Supported ✓ Supported
Batch API Support ✓ Supported ✓ Supported
Tool Usage Support ✓ Supported ✓ Supported
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Select AI Model

Gemini 3.8 Flash
GoogleMax Context: 1,048,576 tokens
$0.75 / $3.75 per 1M tokens
▼
▼
Use Batch API (50% discount)
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

$0.053438 Total Cost
$0.046875 Input Cost
$0.001875 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
$0.000106Cost per 1K
9,394,152Tokens per $
📊 Advanced Cost Breakdown

Processing Speed

26m 20s Processing Time
340 Tokens/Second
105ms Time to First Token
318 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
Enable 6.0x Fast Mode multiplier
📚 Research & Citations
Enable $1.00/$4.00 rates + $10.00/1k search
Enable research tier pricing
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.

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 Gemini 3.8 Flash for high-speed generation of educational materials; choose Claude Fable 5.1 for nuancedlong-form scriptwriting requiring deep pedagogical consistency.

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 →

Claude Fable 5.1 Anthropic 1000000

$0.665625 (rounded ~ $0.67)
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) $1.275000 (rounded ~ $1.28) Input: $1.250000
Output: $0.025000 (rounded ~ $0.03)
Optimized Cost $0.665625 (rounded ~ $0.67) Input: $1.250000
Output: $0.025000 (rounded ~ $0.03)
Unit: $0.000000
Fees: $0.000000
Total Savings $0.609375 47.8% 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: $1.250000
  • Output Cost: $0.025000 (rounded ~ $0.03)
  • Total Cost: $0.665625 (rounded ~ $0.67)
  • Cost per 1K tokens: $0.001326
  • Tokens per dollar: 754,178 tokens
  • Context Window: 1000000 tokens

Speed & Performance Analysis

With a processing speed of 210 tokens per second and 430ms time to first token:

  • Processing Time: 42 minutes, 37.99 seconds
  • Latency: 430 milliseconds to first token
  • Base Throughput: 210 tokens/second
  • Effective Throughput: 196 tokens/second (temperature-adjusted)

Best Use Cases

Choose Gemini 3.8 Flash for high-speed generation of educational materials; choose Claude Fable 5.1 for nuancedlong-form scriptwriting requiring deep pedagogical consistency.

Want this applied to YOUR actual stack?

This calculator shows the math for Claude Fable 5.1. 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 Gemini 3.8 Flash
📋 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 Gemini 3.8 Flash vs Claude Fable 5.1
🏆 Gemini 3.1 Flash Lite
Google
 $0.017938 (rounded ~ $0.02) Best Value ↓ 66.4% cheaper ↓ 97.3% cheaper
🥈 Gemini 3.5 Flash-Lite
Google
 $0.021875 (rounded ~ $0.02) ↓ 59.1% cheaper ↓ 96.7% cheaper
🥉 Gemini 2.5 Flash
Google
 $0.021875 (rounded ~ $0.02) ↓ 59.1% cheaper ↓ 96.7% cheaper
#4 GPT-5.6 Luna
OpenAI
 $0.071750 (rounded ~ $0.07) ↑ 34.3% more ↓ 89.2% cheaper
#5 Gemini 3.6 Flash
Google
 $0.106875 (rounded ~ $0.11) ↑ 100% more ↓ 83.9% cheaper
#6 Gemini 3.5 Flash
Google
 $0.107625 (rounded ~ $0.11) ↑ 101.4% more ↓ 83.8% cheaper
#7 Claude Sonnet 5
Anthropic
 $0.142500 (rounded ~ $0.14) ↑ 166.7% more ↓ 78.6% cheaper
#8 Gemini 3.1 Flash
Google
 $0.143500 (rounded ~ $0.14) ↑ 168.5% more ↓ 78.4% cheaper
#9 GPT-5.6 Terra
OpenAI
 $0.179375 ↑ 235.7% more ↓ 73.1% cheaper
#10 Claude Sonnet 4.6
Anthropic
 $0.213750 (rounded ~ $0.21) ↑ 300% more ↓ 67.9% cheaper
#11 Claude Opus 4.7
Anthropic
 $0.356250 (rounded ~ $0.36) ↑ 566.7% more ↓ 46.5% cheaper
#12 Claude Opus 5
Anthropic
 $0.356250 (rounded ~ $0.36) ↑ 566.7% more ↓ 46.5% cheaper
#13 Claude Opus 4.8
Anthropic
 $0.356250 (rounded ~ $0.36) ↑ 566.7% more ↓ 46.5% cheaper
#14 Claude Opus 4.6
Anthropic
 $0.356250 (rounded ~ $0.36) ↑ 566.7% more ↓ 46.5% cheaper
#15 Gemini 2.5 Pro
Google
 $0.358750 (rounded ~ $0.36) ↑ 571.3% more ↓ 46.1% cheaper
#16 GPT-5.6 Sol
OpenAI
 $0.358750 (rounded ~ $0.36) ↑ 571.3% more ↓ 46.1% cheaper
#17 Grok 4.3
xAI
 $0.558000 (rounded ~ $0.56) ↑ 944.2% more ↓ 16.2% cheaper
#18 Grok 4.20 Beta
xAI
 $0.558000 (rounded ~ $0.56) ↑ 944.2% more ↓ 16.2% cheaper
#19 Gemini 3.1 Pro
Google
 $0.568000 (rounded ~ $0.57) ↑ 962.9% more ↓ 14.7% cheaper
#20 Claude Fable 5.1
Anthropic
 $0.665625 (rounded ~ $0.67) ↑ 1145.6% more Same price
#21 Claude Mythos 5.1
Anthropic
 $0.665625 (rounded ~ $0.67) ↑ 1145.6% more Same price
#22 GPT-5.4
OpenAI
 $0.710000 ↑ 1228.7% more ↑ 6.7% more
#23 GPT-5.4 Thinking
OpenAI
 $0.710000 ↑ 1228.7% more ↑ 6.7% more
#24 Claude Fable 5
Anthropic
 $0.712500 (rounded ~ $0.71) ↑ 1233.3% more ↑ 7% more
#25 Claude Mythos 5
Anthropic
 $0.712500 (rounded ~ $0.71) ↑ 1233.3% more ↑ 7% more
#26 GPT-5.5
OpenAI
 $1.420000 ↑ 2557.3% more ↑ 113.3% more
#27 GPT-6 Astra
OpenAI
 $2.850000 ↑ 5233.3% more ↑ 328.2% more
#28 GPT-6 Astra
OpenAI
 $2.850000 ↑ 5233.3% more ↑ 328.2% more
🏆

Gemini 3.1 Flash Lite
Google

$0.017938 (rounded ~ $0.02)
vs Gemini 3.8 Flash: ↓ 66.4%
vs Claude Fable 5.1: ↓ 97.3%
🥈

Gemini 3.5 Flash-Lite
Google

$0.021875 (rounded ~ $0.02)
vs Gemini 3.8 Flash: ↓ 59.1%
vs Claude Fable 5.1: ↓ 96.7%
🥉

Gemini 2.5 Flash
Google

$0.021875 (rounded ~ $0.02)
vs Gemini 3.8 Flash: ↓ 59.1%
vs Claude Fable 5.1: ↓ 96.7%
#4

GPT-5.6 Luna
OpenAI

$0.071750 (rounded ~ $0.07)
vs Gemini 3.8 Flash: ↑ 34.3%
vs Claude Fable 5.1: ↓ 89.2%
#5

Gemini 3.6 Flash
Google

$0.106875 (rounded ~ $0.11)
vs Gemini 3.8 Flash: ↑ 100%
vs Claude Fable 5.1: ↓ 83.9%
#6

Gemini 3.5 Flash
Google

$0.107625 (rounded ~ $0.11)
vs Gemini 3.8 Flash: ↑ 101.4%
vs Claude Fable 5.1: ↓ 83.8%
#7

Claude Sonnet 5
Anthropic

$0.142500 (rounded ~ $0.14)
vs Gemini 3.8 Flash: ↑ 166.7%
vs Claude Fable 5.1: ↓ 78.6%
#8

Gemini 3.1 Flash
Google

$0.143500 (rounded ~ $0.14)
vs Gemini 3.8 Flash: ↑ 168.5%
vs Claude Fable 5.1: ↓ 78.4%
#9

GPT-5.6 Terra
OpenAI

$0.179375
vs Gemini 3.8 Flash: ↑ 235.7%
vs Claude Fable 5.1: ↓ 73.1%
#10

Claude Sonnet 4.6
Anthropic

$0.213750 (rounded ~ $0.21)
vs Gemini 3.8 Flash: ↑ 300%
vs Claude Fable 5.1: ↓ 67.9%
#11

Claude Opus 4.7
Anthropic

$0.356250 (rounded ~ $0.36)
vs Gemini 3.8 Flash: ↑ 566.7%
vs Claude Fable 5.1: ↓ 46.5%
#12

Claude Opus 5
Anthropic

$0.356250 (rounded ~ $0.36)
vs Gemini 3.8 Flash: ↑ 566.7%
vs Claude Fable 5.1: ↓ 46.5%
#13

Claude Opus 4.8
Anthropic

$0.356250 (rounded ~ $0.36)
vs Gemini 3.8 Flash: ↑ 566.7%
vs Claude Fable 5.1: ↓ 46.5%
#14

Claude Opus 4.6
Anthropic

$0.356250 (rounded ~ $0.36)
vs Gemini 3.8 Flash: ↑ 566.7%
vs Claude Fable 5.1: ↓ 46.5%
#15

Gemini 2.5 Pro
Google

$0.358750 (rounded ~ $0.36)
vs Gemini 3.8 Flash: ↑ 571.3%
vs Claude Fable 5.1: ↓ 46.1%
#16

GPT-5.6 Sol
OpenAI

$0.358750 (rounded ~ $0.36)
vs Gemini 3.8 Flash: ↑ 571.3%
vs Claude Fable 5.1: ↓ 46.1%
#17

Grok 4.3
xAI

$0.558000 (rounded ~ $0.56)
vs Gemini 3.8 Flash: ↑ 944.2%
vs Claude Fable 5.1: ↓ 16.2%
#18

Grok 4.20 Beta
xAI

$0.558000 (rounded ~ $0.56)
vs Gemini 3.8 Flash: ↑ 944.2%
vs Claude Fable 5.1: ↓ 16.2%
#19

Gemini 3.1 Pro
Google

$0.568000 (rounded ~ $0.57)
vs Gemini 3.8 Flash: ↑ 962.9%
vs Claude Fable 5.1: ↓ 14.7%
#20

Claude Fable 5.1
Anthropic

$0.665625 (rounded ~ $0.67)
vs Gemini 3.8 Flash: ↑ 1145.6%
vs Claude Fable 5.1: Same
#21

Claude Mythos 5.1
Anthropic

$0.665625 (rounded ~ $0.67)
vs Gemini 3.8 Flash: ↑ 1145.6%
vs Claude Fable 5.1: Same
#22

GPT-5.4
OpenAI

$0.710000
vs Gemini 3.8 Flash: ↑ 1228.7%
vs Claude Fable 5.1: ↑ 6.7%
#23

GPT-5.4 Thinking
OpenAI

$0.710000
vs Gemini 3.8 Flash: ↑ 1228.7%
vs Claude Fable 5.1: ↑ 6.7%
#24

Claude Fable 5
Anthropic

$0.712500 (rounded ~ $0.71)
vs Gemini 3.8 Flash: ↑ 1233.3%
vs Claude Fable 5.1: ↑ 7%
#25

Claude Mythos 5
Anthropic

$0.712500 (rounded ~ $0.71)
vs Gemini 3.8 Flash: ↑ 1233.3%
vs Claude Fable 5.1: ↑ 7%
#26

GPT-5.5
OpenAI

$1.420000
vs Gemini 3.8 Flash: ↑ 2557.3%
vs Claude Fable 5.1: ↑ 113.3%
#27

GPT-6 Astra
OpenAI

$2.850000
vs Gemini 3.8 Flash: ↑ 5233.3%
vs Claude Fable 5.1: ↑ 328.2%
#28

GPT-6 Astra
OpenAI

$2.850000
vs Gemini 3.8 Flash: ↑ 5233.3%
vs Claude Fable 5.1: ↑ 328.2%
✨ 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.

For educational content creators managing large-scale curriculum design, the choice between these two models often comes down to the balance between high-speed iteration and complex structural reasoning. Gemini 3.8 Flash is exceptionally well-suited for rapid prototyping of lesson outlines and generating bulk practice material, where the primary need is throughput and maintaining a consistent, accessible instructional tone. Its native ability to handle multi-modal inputs is a significant advantage if your curriculum includes visual aids, diagrams, or existing lecture videos that need to be transcribed and adapted into text-based lessons.

Claude Fable 5.1, conversely, acts as a more rigorous editorial partner. When developing long-form video scripts or comprehensive course modules that require deep thematic consistency, Claude Fable 5.1 excels at maintaining a specific pedagogical voice across thousands of tokens. While Gemini 3.8 Flash is the workhorse for high-volume, repetitive tasks—such as generating quiz banks or summarizing feedback—Claude Fable 5.1 provides the nuanced reasoning needed for complex narrative arcs in video storytelling. If your workflow involves creating long-form educational scripts that must balance entertainment with academic accuracy, Claude Fable 5.1 often requires less manual intervention to reach the final draft. Evaluate your current bottleneck: if you are struggling with content volume, lean into the speed of Gemini; if the challenge is content depth and tone alignment, Claude Fable 5.1 is the stronger investment for your production pipeline.

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.

Related model pricing

Gemini 3.8 Flash currently costs $0.75 / $3.75 per 1M tokens. These are the models worth pricing against it, taken live from the tracked registry.

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