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GPT Chat Latest vs DeepSeek V3.1

Detailed technical comparison between GPT Chat Latest (OpenAI) and DeepSeek V3.1 (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 Chat Latest: 5 WinsvsDeepSeek V3.1: 1 Win
Context Leader

GPT Chat Latest

400,000 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

DeepSeek V3.1

$0.25 / MTok
OpenAIactive

GPT Chat Latest

GPT Chat Latest points to OpenAI's stable API alias `chat-latest` that always resolves to the latest Instant chat model used in ChatGPT. As OpenAI rolls out new Instant model updates...

View GPT Chat Latest Full Specs →
DeepSeekactive

DeepSeek V3.1

DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context...

View DeepSeek V3.1 Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT Chat LatestDeepSeek V3.1
ProviderOpenAIDeepSeek
Context Window400,000 tokens🏆163,840 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 GA (est.)Stable GA (est.)
API AvailableYesYes
Released Date2026-05-052025-08-21

API Pricing Comparison

Input Price per Million Tokens

GPT Chat Latest

$5.00

DeepSeek V3.1

$0.25

Output Price per Million Tokens

GPT Chat Latest

$30.00

DeepSeek V3.1

$0.95

💡 Cost Ratio: DeepSeek V3.1 is 20.0x cheaper per input token than GPT Chat Latest.

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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
80.8%vs80.0%+0.8% GPT Chat Latest
GPT Chat Latest 🏆
DeepSeek V3.1
HumanEvalPython coding & logic synthesis
79.0%vs78.2%+0.8% GPT Chat Latest
GPT Chat Latest 🏆
DeepSeek V3.1
MATHComplex mathematical problem solving
56.2%vs55.4%+0.8% GPT Chat Latest
GPT Chat Latest 🏆
DeepSeek V3.1
GPQAGraduate-level expert reasoning
41.6%vs40.8%+0.8% GPT Chat Latest
GPT Chat Latest 🏆
DeepSeek V3.1
HellaSwagCommonsense reasoning and inference
80.4%vs83.0%+2.6% DeepSeek V3.1
GPT Chat Latest
DeepSeek V3.1 🏆
MT-BenchMulti-turn conversation flow quality
8.6%vs8.6%+0.1% GPT Chat Latest
GPT Chat Latest 🏆
DeepSeek V3.1

GPT Chat Latest Quirks & Gotchas

No developer gotchas reported.

DeepSeek V3.1 Quirks & Gotchas

No developer gotchas reported.

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