Devstral Small vs GPT-5.1 Codex mini
Benchmarks, API Token Pricing, Context Window & Speed Comparison
Related topics (12)
Devstral Small by Mistral AI and GPT-5.1 Codex mini by OpenAI represent two of the frontier AI models analyzed in our comprehensive 2026 AI benchmark and LLM comparison. In this head-to-head evaluation, we examine API token pricing, context window specifications, inference speed (tokens per second), and empirical reasoning performance. From a pure economic perspective, Devstral Small holds a notable pricing advantage for token ingestion. On output generation, Devstral Small is more economical per million generated tokens. In data-heavy architectures requiring extensive repository or document analysis, GPT-5.1 Codex mini provides an expanded memory horizon with 400K tokens. In latency-sensitive production environments, GPT-5.1 Codex mini leads in tokens-per-second throughput, making it ideal for real-time conversational agents and high-concurrency workflows. Below is the complete empirical head-to-head breakdown across cost, speed, context, and capability matrices.
किसी भी मॉडल को बदलें और तुलना करें
Select any AI models from our verified benchmark database to generate live side-by-side matrices.
Devstral Small
ओपन-वेट्स मॉडलMistral AI द्वारा विकसित Devstral Small एक उन्नत AI मॉडल है, जिसमें 128K टोकन का कॉन्टेक्स्ट विंडो और $0.15/1M इनपुट तथा $0.45/1M आउटपुट मूल्य निर्धारण है। यह कोडिंग, विश्लेषण और एंटरप्राइज वर्कफ़्लो के लिए उपयुक्त है।
$0.15 / 1M
$0.45 / 1M
128K tokens
42%
GPT-5.1 Codex mini
डीप रीजनिंग मॉडलOpenAI द्वारा विकसित GPT-5.1 Codex mini एक उन्नत AI मॉडल है, जिसमें 400K टोकन का कॉन्टेक्स्ट विंडो और $0.25/1M इनपुट तथा $2/1M आउटपुट मूल्य निर्धारण है। यह कोडिंग, विश्लेषण और एंटरप्राइज वर्कफ़्लो के लिए उपयुक्त है।
$0.25 / 1M
$2.00 / 1M
400K tokens
55.5%
एक नज़र में मुख्य अंतर
- Devstral Small is 3.1x cheaper for API usage (input + output tokens combined).
- GPT-5.1 Codex mini has a larger context window (400K vs 128K tokens).
- GPT-5.1 Codex mini is faster at 180 tok/s vs 95 tok/s.
- GPT-5.1 Codex mini leads on SWE-bench coding (55.5% vs 42.0%).
| Feature | Devstral Small | GPT-5.1 Codex mini |
|---|---|---|
Intelligence Index Composite reasoning & knowledge score (0-100) | 45 | 47 |
Provider | Mistral AI | OpenAI |
Input Price Cost per million input tokens | $0.15 / 1M | $0.25 / 1M |
Output Price Cost per million output tokens | $0.45 / 1M | $2.00 / 1M |
Blended Price Weighted 7:2:1 cache:input:output per 1M | $0.11 / 1M | $0.27 / 1M |
Context Window Maximum input + output tokens | 128K tokens~192 A4 pages of text | 400K tokens~600 A4 pages of text |
Max Output Tokens Per single request | 16K | 128K |
Throughput Speed Tokens generated per second | 95 tok/s | 180 tok/s |
SWE-bench Verified Real-world software engineering | 42% | 55.5% |
GPQA Diamond Graduate-level reasoning | 50% | 66.5% |
Cached Input Price Prompt caching discount per 1M tokens | $0.05 / 1M | $0.03 / 1M |
किस क्षेत्र में कौन आगे है?
At-a-glance decision frameworkसत्यापित बेंचमार्क स्कोर तुलना
Official evaluation metrics verified by independent third-party research labs.
Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.
Challenging questions created by domain experts to test complex PhD-level reasoning.
Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.
Crowdsourced human preference evaluation based on blind, head-to-head model battles.
Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.
Autonomous multi-step tasks executed inside a real command-line terminal environment.
Research-grade coding problems drawn from real scientific and numerical workloads.
Contamination-free competitive programming problems collected continuously over time.
American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.
Accuracy when reasoning over very large inputs that fill the model context window.
Tokens emitted per second during active generation streaming.
लेटेंसी और रिस्पॉन्स समय
Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.
रियल-टाइम टोकन लागत सिम्युलेटर
Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.
Devstral Small · Strengths & Key Advantages
- Mistral AI की उन्नत Code-Optimized Autoregressive Transformer आर्किटेक्चर और 128K कॉन्टेक्स्ट विंडो क्षमता
- किफायती और पारदर्शी API मूल्य ($0.15/1M इनपुट, $0.45/1M आउटपुट) तेज़ रिस्पॉन्स के साथ
- जटिल कोडिंग, तार्किक विश्लेषण और बहुभाषी कार्यों में उच्च सटीकता
Considerations & Trade-offs
- बड़े पैमाने पर लंबे कॉन्टेक्स्ट प्रॉम्प्ट्स के लिए टोकन बजट प्रबंधन आवश्यक है
- विशिष्ट डोमेन कार्यों में सर्वोत्तम परिणाम के लिए सटीक प्रॉम्प्ट इंजीनियरिंग की आवश्यकता होती है
GPT-5.1 Codex mini · Strengths & Key Advantages
- OpenAI की उन्नत Compact code-specialised reasoning model आर्किटेक्चर और 400K कॉन्टेक्स्ट विंडो क्षमता
- किफायती और पारदर्शी API मूल्य ($0.25/1M इनपुट, $2/1M आउटपुट) तेज़ रिस्पॉन्स के साथ
- जटिल कोडिंग, तार्किक विश्लेषण और बहुभाषी कार्यों में उच्च सटीकता
Considerations & Trade-offs
- बड़े पैमाने पर लंबे कॉन्टेक्स्ट प्रॉम्प्ट्स के लिए टोकन बजट प्रबंधन आवश्यक है
- विशिष्ट डोमेन कार्यों में सर्वोत्तम परिणाम के लिए सटीक प्रॉम्प्ट इंजीनियरिंग की आवश्यकता होती है
Token Use & Task Economics
Estimated cost and token consumption to complete one representative agentic task.
| Metric | Devstral Small | GPT-5.1 Codex mini |
|---|---|---|
Cost per Task Estimated USD to finish one task | $0.14 | $0.33 |
Output Tokens / Task Tokens generated per task | 30K | 48K |
Reasoning Tokens / Task Thinking tokens burned per task | 0K | 23K |
तकनीकी विशिष्टताएँ (Specs)
Architecture, release timeline, capabilities, and modalities.
| Feature | Devstral Small | GPT-5.1 Codex mini |
|---|---|---|
| Official API Model ID (SDK) | devstral-small-latest | gpt-5-1-codex-mini |
| API Protocol | OpenAI-Compatible REST / vLLM / SGLang / HuggingFace TGI | OpenAI Responses API & Chat Completions v1 |
| Release Date | 2025-07 | 2025-11 |
| Knowledge Cutoff | May 2025 | October 2024 |
| Architecture | Code-Optimized Autoregressive Transformer | Compact code-specialised reasoning model |
| Parameters | 24B | Confidential |
| Enterprise Rate Limits (RPM / TPM) | Unlimited (Hardware-bound on self-hosted GPU) / 10,000 RPM Cloud · Unlimited local throughput / 10M+ TPM Managed Cloud | 10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM |
| Long-Context Tier (>128K/200K) | Flat rate ($0.15/1M in) across full 128K window | Flat rate ($0.25/1M in) across full 400K window |
| Prompt Cache Policy & TTL | Cached input at $0.05/1M tokens | Automatic prefix caching at $0.025/1M (no extra cache-write fee) |
| Computer Use / GUI Agent | API / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop) | Supported (Screen coordinate grounding, browser & desktop GUI action loops) |
| MCP & Parallel Tool Calling | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema |
| Web Search Grounding & Sandbox | Supported via external Tavily/Exa Search & E2B/Docker Sandbox tools | Native Web Search tool + Hosted Code Interpreter & File Search RAG |
| Official Fine-Tuning Support | Full Weights SFT, LoRA, QLoRA, DPO & GRPO RL (Unsloth / Axolotl / Llama-Factory) | Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT) |
| Multimodal Token Billing | Text BPE (~4 chars/token) | Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) |
| Quantization & Min GPU VRAM | BF16 / FP16, FP8 Dynamic, INT4 AWQ / GPTQ, GGUF (Q4_K_M / Q8_0) · 15 GB VRAM (4-bit Quantized) · 52 GB VRAM (Native BF16) | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) |
| Safety & Frontier Classification | Open-Weights System Card + Customizable Guardrail Layer (Llama Guard / ShieldGemma) | OpenAI Preparedness Framework Audited & System Card Published |
| Enterprise Compliance (ZDR/HIPAA/SOC2) | 100% Air-Gapped On-Premises / Private VPC · Full HIPAA, GDPR & SOC2 Control | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier |
| Input Modalities | text | text, vision |
| Output Modalities | text | text |
Devstral Small vs GPT-5.1 Codex mini: त्वरित प्रश्नोत्तर (FAQ)
Which is more intelligent, Devstral Small or GPT-5.1 Codex mini?
GPT-5.1 Codex mini is more intelligent. It scores 47 compared with 45 on the composite Intelligence Index.
Which model is faster?
GPT-5.1 Codex mini is faster, generating 180 tokens per second compared with 95 tokens per second.
Which model is cheaper to run?
Devstral Small is cheaper at $0.11 per 1M tokens blended, compared with $0.27 (7:2:1 cache:input:output ratio).
Which model has lower latency?
Devstral Small has lower latency, with a time to first token of 0.42s compared with 0.72s.
Which model has a larger context window?
GPT-5.1 Codex mini has a larger context window, supporting 400K tokens compared with 128K tokens.
निष्कर्ष
Verdict & Model Selection Recommendation: Choose Devstral Small if your priority is Local IDE coding companions, automated unit test generation, and secure on-premise PR reviews. Its performance in demanding tasks justifies its operational token cost. Choose GPT-5.1 Codex mini if your workflow prioritizes High-volume code automation and inline review. For large-scale batch processing or customer-facing conversational interfaces, its balance of speed and economics delivers superior ROI.
अक्सर पूछे जाने वाले प्रश्न (FAQ)
How does Devstral Small compare to GPT-5.1 Codex mini in API token pricing and cost per token?+
Devstral Small costs $0.15 per 1M input tokens and $0.45 per 1M output tokens, whereas GPT-5.1 Codex mini costs $0.25 input and $2.00 output. Overall, Devstral Small is the more cost-effective model for high-volume API pipelines. Both models support prompt caching discounts of up to 90% for repeated prompt prefixes.
Which model has a larger context window: Devstral Small or GPT-5.1 Codex mini?+
Devstral Small supports a context window of 128K tokens (~96k words), while GPT-5.1 Codex mini supports 400K tokens (~300k words). Therefore, GPT-5.1 Codex mini can process more textual data and document context in a single prompt.
Which AI model is better for software engineering and coding: Devstral Small or GPT-5.1 Codex mini?+
Devstral Small scores 42% on SWE-bench Verified while GPT-5.1 Codex mini scores 55.5%. For autonomous software engineering and multi-file debugging, GPT-5.1 Codex mini holds the verified benchmark lead.
What is the difference in reasoning capability and extended thinking between Devstral Small and GPT-5.1 Codex mini?+
Devstral Small is optimized for low-latency direct generation. In contrast, GPT-5.1 Codex mini provides chain-of-thought reasoning depth for complex math and science.
How does inference speed (tokens per second) compare between Devstral Small and GPT-5.1 Codex mini?+
Devstral Small generates approximately 95 tokens per second, while GPT-5.1 Codex mini delivers 180 tokens per second. In latency-sensitive production environments, GPT-5.1 Codex mini provides faster time-to-first-token (TTFT) and higher streaming response velocity.
Can you implement a tiered LLM routing setup combining Devstral Small and GPT-5.1 Codex mini to optimize costs?+
Yes! High-efficiency architectures route high-frequency routine classification and conversational tasks to Devstral Small to save operational costs, and dynamically escalate complex architectural queries or reasoning tasks to GPT-5.1 Codex mini. This tiered routing pattern cuts overall API bills by up to 70%.
Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.
Related reading
- Devstral Medium vs GPT-5.1 Codex mini: Benchmarks, Pricing & Speed Comparisonतुलना
- Devstral Small vs Codestral: Benchmarks, Pricing & Speed Comparisonतुलना
- GPT-5.1 Codex mini vs GPT-5-Codex: Benchmarks, Pricing & Speed Comparisonतुलना
- GPT-5.1 Codex vs GPT-5.1 Codex mini: Benchmarks, Pricing & Speed Comparisonतुलना
- North Mini Code vs GPT-5.1 Codex mini: Benchmarks, Pricing & Speed Comparisonतुलना
- Aion-3.0 vs Aion-Mini: Benchmarks, Pricing & Speed Comparisonतुलना
Benchmark scores, token prices, and rate limits evolve rapidly as AI labs release model updates. Always verify current specifications and pricing on the official provider documentation.
स्रोत: GetInfoUs Independent AI Benchmarks & Official API Specs