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Devstral-2-123B vs Grok 4.1 Fast
Comprehensive side-by-side LLM comparison
Grok 4.1 Fast offers 1.8M more tokens in context window than Devstral-2-123B. Devstral-2-123B is $2.00 cheaper per million tokens. Grok 4.1 Fast supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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Mistral AI
Devstral 2, released by Mistral AI on December 9, 2025, is a 123 billion parameter dense transformer model specifically designed for software engineering tasks. It features a 256K token context window and achieved 72.2% on SWE-bench Verified at release, making it a competitive open-weight option for automated coding and agentic development. Devstral 2 targets code generation, multi-file software engineering, and agentic development workflows under a modified MIT license.
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xAI
Grok 4.1 Fast, released by xAI in November 2025, is a fast-response variant from the Grok 4 family featuring a 2M token context window designed for high-throughput applications. It omits thinking tokens for immediate responses, reducing latency while maintaining strong output quality. Grok 4.1 Fast targets production APIs, real-time assistants, and cost-sensitive applications requiring long-context understanding at high volume.
22 days newer
Grok 4.1 Fast
xAI
2025-11-17
Devstral-2-123B
Mistral AI
2025-12-09
Pricing Comparison
Cost per million tokens (USD)
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Devstral-2-123B
Input:$1.00
Output:$3.00($2.00 cheaper)
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Grok 4.1 Fast
Input:$1.00
Output:$5.00
Performance Metrics
Context window and performance specifications
Provider Availability & Performance
Available providers and their performance metrics
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Devstral-2-123B
1 providers
OpenRouter
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Grok 4.1 Fast
1 providers
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Devstral-2-123B
Avg Score:0.0%
Providers:1
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Grok 4.1 Fast
Avg Score:0.0%
Providers:1