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GPT-5 vs GPT-5.1

Benchmarks, API Token Pricing, Context Window & Speed Comparison

Geprüft vom GetInfoUs-ForschungsteamZuletzt geprüft: October 2026Redaktionelle Richtlinien
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AI CompareAI BenchmarkToken PricingModel CostModel SpecsSWE-bench CodingModel VersusWhich AI ModelLLM Speed & LatencyReasoning ModelsExtended ThinkingPrompt Caching ROI
GPT-5 vs GPT-5.1: Benchmarks, Pricing & Speed Comparison

GPT-5 von OpenAI und GPT-5.1 von OpenAI gehören zu den führenden KI-Modellen. GPT-5 bietet ein Kontextfenster von 400K Tokens bei API-Preisen von $1.25/$10.00 pro 1M Tokens, während GPT-5.1 400K Tokens Kontext zu $1.25/$10.00 pro 1M Tokens bereitstellt. Hier finden Sie den vollständigen Benchmark-, Latenz- und Kostenvergleich.

Direktvergleich (VS)

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OpenAI

GPT-5

Deep-Reasoning-Engine

GPT-5 von OpenAI ist ein KI-Modell für tiefgehendes logisches Denken, komplexe Mathematik und wissenschaftliche Analysen mit 400K Kontextfenster, 135 Token/s Durchsatz, einem Intelligenz-Index von 58/100 und $1.25/$10 pro 1M Token.

Intelligence Index58 / 100
Input Token:

$1.25 / 1M

Output Token:

$10.00 / 1M

Context Window:

400K tokens

SWE-bench Verified:

74.9%

OpenAI

GPT-5.1

Frontier-Flaggschiff-Modell

GPT-5.1 von OpenAI ist ein KI-Modell für anspruchsvolles Enterprise-Reasoning, Softwareentwicklung und produktive KI-Workflows mit 400K Kontextfenster, 130 Token/s Durchsatz, einem Intelligenz-Index von 60/100 und $1.25/$10 pro 1M Token.

Intelligence Index60 / 100
Input Token:

$1.25 / 1M

Output Token:

$10.00 / 1M

Context Window:

400K tokens

SWE-bench Verified:

74.9%

Wichtigste Unterschiede auf einen Blick

  • Both models cost the same under this workload — choose on capability, not price.
  • GPT-5 is faster at 135 tok/s vs 130 tok/s.
  • GPT-5.1 leads on SWE-bench coding (74.9% vs 74.9%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
FeatureGPT-5GPT-5.1
Intelligence Index
Composite reasoning & knowledge score (0-100)
5860
Provider
OpenAIOpenAI
Input Price
Cost per million input tokens
$1.25 / 1M$1.25 / 1M
Output Price
Cost per million output tokens
$10.00 / 1M$10.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$1.34 / 1M$1.34 / 1M
Context Window
Maximum input + output tokens
400K tokens~600 A4 pages of text400K tokens~600 A4 pages of text
Max Output Tokens
Per single request
128K128K
Throughput Speed
Tokens generated per second
135 tok/s130 tok/s
SWE-bench Verified
Real-world software engineering
74.9%74.9%
GPQA Diamond
Graduate-level reasoning
85.7%72.1%
Cached Input Price
Prompt caching discount per 1M tokens
$0.13 / 1M$0.13 / 1M

Wer gewinnt in welcher Disziplin?

At-a-glance decision framework
Coding
GPT-5.1
+0.0% SWE-bench lead
Cost
Tied
Identical monthly runtime cost
Speed
GPT-5
+4% faster generation
Context
Tied
400K tokens window

Geprüfte Benchmark-Ergebnisse im Vergleich

Official evaluation metrics verified by independent third-party research labs.

GPT-5GPT-5.1
SWE-bench Verified (Autonomous Coding)

Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.

74.9%vs74.9%
GPQA Diamond (Doctorate-Level Science & Math)

Challenging questions created by domain experts to test complex PhD-level reasoning.

85.7%vs72.1%
MMLU-Pro (Multi-task Language Understanding)

Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.

86.5%vs86.1%
LMSYS Chatbot Arena Elo

Crowdsourced human preference evaluation based on blind, head-to-head model battles.

1366ptsvs1368pts
Humanity's Last Exam (Frontier Expert Knowledge)

Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.

12.5%vs12.1%
Terminal-Bench (Agentic Coding & Terminal Use)

Autonomous multi-step tasks executed inside a real command-line terminal environment.

45%vs46.7%
SciCode (Scientific Computing)

Research-grade coding problems drawn from real scientific and numerical workloads.

42.8%vs43.2%
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

71%vs71.8%
AIME (Advanced Math Competition)

American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.

94.6%vs91.2%
Long-Context Reasoning

Accuracy when reasoning over very large inputs that fill the model context window.

78%vs77.9%
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

135 tok/s vs130 tok/s

Latenz & Antwortzeit

Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.

Time to First Token (TTFT)Lower is better
GPT-51.15s
GPT-5.11.20s
Est. End-to-End Response (500 tokens)TTFT + generation time
GPT-54.85s
GPT-5.15.05s

Interaktiver Token-Kosten-Simulator

Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.

100K / day
10K500K1M
30K / day
5K150K300K
50% cached
0% (Cold)50%90% (Warm)
GPT-5 Monthly API Bill
$11.06 / month
$1.25/1M in · $10/1M out
GPT-5.1 Monthly API Bill
$11.06 / month
$1.25/1M in · $10/1M out
These models cost the same under this workload — no savings either way.Break-even

GPT-5 · Strengths & Key Advantages

  • 400K Kontextfenster und bis zu 128K maximale Output-Token (SWE-bench Verified 74.9% · GPQA Diamond 85.7%)
  • Hohe Generierungsgeschwindigkeit von 135 Token/Sekunde bei nur 1150 ms Erstlatenz (TTFT)
  • Effiziente API-Struktur ($1.25/$10 pro 1M Token) inklusive Prompt-Caching, Tool-Calling und strikter JSON-Ausgabe
Considerations & Trade-offs
  • Proprietäres Cloud-Modell ohne Möglichkeit zum lokalen Download der Modellgewichte
  • Bei extrem komplexen mehrstufigen Forschungsfragen bieten schwere Reasoning-Spezialmodelle noch tiefere Analysen

GPT-5.1 · Strengths & Key Advantages

  • 400K Kontextfenster und bis zu 128K maximale Output-Token (SWE-bench Verified 74.9% · GPQA Diamond 72.1%)
  • Hohe Generierungsgeschwindigkeit von 130 Token/Sekunde bei nur 1200 ms Erstlatenz (TTFT)
  • Effiziente API-Struktur ($1.25/$10 pro 1M Token) inklusive Prompt-Caching, Tool-Calling und strikter JSON-Ausgabe
Considerations & Trade-offs
  • Proprietäres Cloud-Modell ohne Möglichkeit zum lokalen Download der Modellgewichte
  • Bei extrem komplexen mehrstufigen Forschungsfragen bieten schwere Reasoning-Spezialmodelle noch tiefere Analysen

Token Use & Task Economics

Estimated cost and token consumption to complete one representative agentic task.

MetricGPT-5GPT-5.1
Cost per Task
Estimated USD to finish one task
$1.55$1.45
Output Tokens / Task
Tokens generated per task
55K52K
Reasoning Tokens / Task
Thinking tokens burned per task
29K28K

Technische Spezifikationen

Architecture, release timeline, capabilities, and modalities.

FeatureGPT-5GPT-5.1
Official API Model ID (SDK)gpt-5gpt-5-1
API ProtocolOpenAI Responses API & Chat Completions v1OpenAI Responses API & Chat Completions v1
Release Date2025-082025-11
Knowledge CutoffSeptember 2024October 2024
ArchitectureUnified reasoning model (fast + thinking modes)Unified Reasoning (Instant & Thinking)
ParametersConfidentialConfidential
Enterprise Rate Limits (RPM / TPM)10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM
Long-Context Tier (>128K/200K)Flat rate ($1.25/1M in) across full 400K windowFlat rate ($1.25/1M in) across full 400K window
Prompt Cache Policy & TTLAutomatic prefix caching at $0.125/1M (no extra cache-write fee)Automatic prefix caching at $0.125/1M (no extra cache-write fee)
Computer Use / GUI AgentSupported (Screen coordinate grounding, browser & desktop GUI action loops)Supported (Screen coordinate grounding, browser & desktop GUI action loops)
MCP & Parallel Tool CallingNative MCP Client/Server ready · Parallel function calling · 100% Strict JSON SchemaNative MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema
Web Search Grounding & SandboxNative Web Search tool + Hosted Code Interpreter & File Search RAGNative Web Search tool + Hosted Code Interpreter & File Search RAG
Official Fine-Tuning SupportSupervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT)Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT)
Multimodal Token BillingText BPE (~4 chars/token) · Vision (~258–765 tokens per image tile)Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile)
Quantization & Min GPU VRAMCloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API)Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API)
Safety & Frontier ClassificationOpenAI Preparedness Framework Audited & System Card PublishedOpenAI Preparedness Framework Audited & System Card Published
Enterprise Compliance (ZDR/HIPAA/SOC2)SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise TierSOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier
Input Modalitiestext, visiontext, vision
Output Modalitiestexttext

GPT-5 vs GPT-5.1: Schnelle Antworten (FAQ)

Which is more intelligent, GPT-5 or GPT-5.1?

GPT-5.1 is more intelligent. It scores 60 compared with 58 on the composite Intelligence Index.

Which model is faster?

GPT-5 is faster, generating 135 tokens per second compared with 130 tokens per second.

Which model has lower latency?

GPT-5 has lower latency, with a time to first token of 1.15s compared with 1.20s.

Fazit

Sowohl GPT-5 (Optimal für tiefgehendes logisches Denken, komplexe Mathematik und wissenschaftliche Analysen, Enterprise-RAG-Systeme und skalierbare API-Pipelines.) als auch GPT-5.1 (Optimal für anspruchsvolles Enterprise-Reasoning, Softwareentwicklung und produktive KI-Workflows, Enterprise-RAG-Systeme und skalierbare API-Pipelines.) überzeugen im Produktionseinsatz: GPT-5.1 führt bei komplexem Reasoning und Coding, GPT-5 liefert den höheren Token-Durchsatz und GPT-5 ist die kosteneffizienteste Wahl für große API-Workloads.

Häufig gestellte Fragen (FAQ)

Welches Modell ist besser für Coding und Reasoning – GPT-5 oder GPT-5.1?+

Im Gesamt-Intelligenzindex und bei Software-Benchmarks liegt GPT-5.1 vorn. Prüfen Sie oben die SWE-bench- und GPQA-Werte für Ihren Anwendungsfall.

Wie unterscheiden sich die API-Preise von GPT-5 und GPT-5.1?+

GPT-5 kostet $1.25 / $10.00 pro 1M Input-/Output-Tokens, GPT-5.1 liegt bei $1.25 / $10.00. Beim gewichteten Gesamtpreis ist GPT-5 günstiger.

Welches Modell hat das größere Kontextfenster und die höhere Geschwindigkeit?+

GPT-5 bietet 400K Tokens Kontext gegenüber 400K Tokens bei GPT-5.1. Bei der Generierungsgeschwindigkeit liegt GPT-5 vorn.

AI Terminology & Guide
Explore Glossary →

Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.

Tokens & PricingContext WindowAI BenchmarksReasoning ModelsTool CallingModel Context Protocol (MCP)

Related reading

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.

Offizielle Quellen: Offizielle API-Dokumentation von OpenAI und OpenAI, Systemkarten und unabhängige Benchmark-Auswertungen (2026).