Devstral 2 vs GPT-5.1: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
Mistral
Devstral 2
Pricing (per 1M tokens)
Input$0.4000
Output$0.9000
Context & Output
Context Window262.1K tokens
Max Output32.8K tokens
Capabilities
Categorymid
Multimodaltext
Fine-tuningNo
StreamingYes
OpenAI
GPT-5.1
Pricing (per 1M tokens)
Input$1.25
Output$10.00
Cached Input$0.1250
Context & Output
Context Window400K tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Devstral 2
68.0% cheaper
Cheaper Output Price
Devstral 2
91.0% cheaper
Larger Context Window
GPT-5.1
+137.9K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Devstral 2
$1.30
$0.4000/1M input + $0.9000/1M output
GPT-5.1
$11.25
$1.25/1M input + $10.00/1M output
Devstral 2 is 88.4% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Devstral 2 or GPT-5.1?
For input tokens, Devstral 2 is cheaper at $0.4000 per 1M tokens. For output tokens, Devstral 2 is cheaper at $0.9000 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of Devstral 2 vs GPT-5.1?
Devstral 2 has a context window of 262.1K tokens, while GPT-5.1 has 400K tokens. GPT-5.1 supports a larger context window of 400K tokens, which is beneficial for processing longer documents.
Need more tools?
Explore our complete suite of LLM calculators and comparison tools.