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GPT-6.1 Sol vs DeepSeek V4.1 Flash 1017

Detailed technical comparison between GPT-6.1 Sol (OpenAI) and DeepSeek V4.1 Flash 1017 (DeepSeek). 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

GPT-6.1 Sol: 6 WinsvsDeepSeek V4.1 Flash 1017: 0 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
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 →
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 →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-6.1 SolDeepSeek V4.1 Flash 1017
ProviderOpenAIDeepSeek
Context Window1,050,000 tokens🏆1,048,576 tokens
Agent SuitabilityNot yet benchmarkedNot yet benchmarked
Time to First Token (TTFT)No public TTFT dataNo public TTFT data
Deployment Modelmanaged apiself hostable
Production StabilityStable releaseNot verified
API AvailableYesYes
Released Date2026-09-292026-10-17

API Pricing Comparison

Input Price per Million Tokens

GPT-6.1 Sol

$2.00

DeepSeek V4.1 Flash 1017

$0.15

Output Price per Million Tokens

GPT-6.1 Sol

$10.00

DeepSeek V4.1 Flash 1017

$0.60

💡 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.

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
79.0%vs74.4%+4.6% GPT-6.1 Sol
GPT-6.1 Sol 🏆
DeepSeek V4.1 Flash 1017
HumanEvalPython coding & logic synthesis
77.2%vs70.6%+6.6% GPT-6.1 Sol
GPT-6.1 Sol 🏆
DeepSeek V4.1 Flash 1017
MATHComplex mathematical problem solving
54.4%vs43.8%+10.6% GPT-6.1 Sol
GPT-6.1 Sol 🏆
DeepSeek V4.1 Flash 1017
GPQAGraduate-level expert reasoning
39.8%vs31.2%+8.6% GPT-6.1 Sol
GPT-6.1 Sol 🏆
DeepSeek V4.1 Flash 1017
HellaSwagCommonsense reasoning and inference
82.0%vs78.4%+3.6% GPT-6.1 Sol
GPT-6.1 Sol 🏆
DeepSeek V4.1 Flash 1017
MT-BenchMulti-turn conversation flow quality
8.5%vs8.1%+0.4% GPT-6.1 Sol
GPT-6.1 Sol 🏆
DeepSeek V4.1 Flash 1017

GPT-6.1 Sol Quirks & Gotchas

No developer gotchas reported.

DeepSeek V4.1 Flash 1017 Quirks & Gotchas

No developer gotchas reported.

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