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Codestral 2508 vs DeepSeek V3.1 Terminus

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Codestral 2508 and DeepSeek V3.1 Terminus.

Mistral

Codestral 2508

Mistral's cutting-edge language model for coding released end of July 2025. Codestral specializes in low-latency, high-frequency tasks such as fill-in-the-middle (FIM), code correction and test generation. [Blog Post](https://mistral.ai/news/codestral-25-08)

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DeepSeek

DeepSeek V3.1 Terminus

DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further optimizing the model's...

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Technical Specifications

SpecificationCodestral 2508DeepSeek V3.1 Terminus
ProviderMistralDeepSeek
Context Window256,000 tokens163,840 tokens
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelself hostableself hostable
Production Stabilitystablestable
API AvailableYesYes
Released Date2025-08-012025-09-22

API Pricing Comparison

Input Price per Million Tokens

Codestral 2508

$0.30

DeepSeek V3.1 Terminus

$0.27

Output Price per Million Tokens

Codestral 2508

$0.90

DeepSeek V3.1 Terminus

$0.95

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

Codestral 2508 Quirks & Gotchas

No developer gotchas reported.

DeepSeek V3.1 Terminus Quirks & Gotchas

No developer gotchas reported.