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DeepSeek V4.1 Flash 1017 vs GPT-6.1 Sol

Detailed technical comparison between DeepSeek V4.1 Flash 1017 (DeepSeek) and GPT-6.1 Sol (OpenAI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

DeepSeek V4.1 Flash 1017: 0 WinsvsGPT-6.1 Sol: 6 Wins
Context Leader

GPT-6.1 Sol

1,050,000 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

DeepSeek V4.1 Flash 1017

$0.15 / MTok
DeepSeekactive

DeepSeek V4.1 Flash 1017

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name. V4.1 Flash is a sparse mixture-of-experts model...

View DeepSeek V4.1 Flash 1017 Full Specs →
OpenAIactive

GPT-6.1 Sol

GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional...

View GPT-6.1 Sol Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationDeepSeek V4.1 Flash 1017GPT-6.1 Sol
ProviderDeepSeekOpenAI
Context Window1,048,576 tokens1,050,000 tokens🏆
Agent SuitabilityNot yet benchmarkedNot yet benchmarked
Time to First Token (TTFT)No public TTFT dataNo public TTFT data
Deployment Modelself hostablemanaged api
Production StabilityNot verifiedStable release
API AvailableYesYes
Released Date2026-10-172026-09-29

API Pricing Comparison

Input Price per Million Tokens

DeepSeek V4.1 Flash 1017

$0.15

GPT-6.1 Sol

$2.00

Output Price per Million Tokens

DeepSeek V4.1 Flash 1017

$0.60

GPT-6.1 Sol

$10.00

💡 Cost Ratio: DeepSeek V4.1 Flash 1017 is 13.3x cheaper per input token than GPT-6.1 Sol.

Want to test both models live?

Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.

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Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
74.4%vs79.0%+4.6% GPT-6.1 Sol
DeepSeek V4.1 Flash 1017
GPT-6.1 Sol 🏆
HumanEvalPython coding & logic synthesis
70.6%vs77.2%+6.6% GPT-6.1 Sol
DeepSeek V4.1 Flash 1017
GPT-6.1 Sol 🏆
MATHComplex mathematical problem solving
43.8%vs54.4%+10.6% GPT-6.1 Sol
DeepSeek V4.1 Flash 1017
GPT-6.1 Sol 🏆
GPQAGraduate-level expert reasoning
31.2%vs39.8%+8.6% GPT-6.1 Sol
DeepSeek V4.1 Flash 1017
GPT-6.1 Sol 🏆
HellaSwagCommonsense reasoning and inference
78.4%vs82.0%+3.6% GPT-6.1 Sol
DeepSeek V4.1 Flash 1017
GPT-6.1 Sol 🏆
MT-BenchMulti-turn conversation flow quality
8.1%vs8.5%+0.4% GPT-6.1 Sol
DeepSeek V4.1 Flash 1017
GPT-6.1 Sol 🏆

DeepSeek V4.1 Flash 1017 Quirks & Gotchas

No developer gotchas reported.

GPT-6.1 Sol Quirks & Gotchas

No developer gotchas reported.

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