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Compare / head-to-head

GPT-4.1vsGPT-5

GPT-5 leads 6 of 6 shared benchmarks. GPT-4.1 is 1.1x cheaper per token. GPT-4.1 has the larger context window (1.0M tokens).

Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.

Shared benchmarks
0 – 6
GPT-5 leads
Cheaper per token
GPT-4.1
1.1x cheaper, input + output
Larger context
GPT-4.1
1.0M tokens
Provider uptime (30d)
95.0156%
OpenAI
GPT-4.1
OpenAI · released 2025-04-14
textvision
Context
1.0M
Max out
33K
Input /1M
$2
Output /1M
$8
Cached /1M
$0.5
Scores
10 · 8 core
GPT-5
OpenAI · released 2025-08-07
textvision
Context
400K
Max out
128K
Input /1M
$1.25
Output /1M
$10
Cached /1M
$0.125
Scores
9 · 8 core
Quality

Benchmark matrix

BenchmarkGPT-4.1GPT-5ΔEdge
Reported by both · 6
SWE-bench Verified54.6% 74.9% -20.3 ptGPT-5
GPQA Diamond66.3% 86.2% epoch-19.9 ptGPT-5
FrontierMath Tiers 1-3 v2 (Epoch AI run)6% epoch55.4% epoch-49.4 ptGPT-5
OTIS Mock AIME 2024-2025 (Epoch AI run)38.3% epoch91.4% epoch-53.1 ptGPT-5
SimpleQA Verified31.1% epoch50.1% epoch-19 ptGPT-5
SWE-bench Verified (Epoch AI run)48.5% epoch73.6% epoch-25.1 ptGPT-5
Only GPT-4.1 reports · 3
MMLU90.2% not reported
AIME 202448.1% not reported
Video-MME (long, no subtitles)72% not reported
Only GPT-5 reports · 2
AIME 2025not reported94.6%
FrontierMath Tier 4 v2 (Epoch AI run)not reported22% epoch
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GPT-4.1 minus GPT-5 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing

Side by side

SpecGPT-4.1GPT-5Edge
Context window1.0M tokens400K tokensGPT-4.1
Max output33K tokens128K tokensGPT-5
Input price / 1M$2 $1.25 GPT-5
Output price / 1M$8 $10 GPT-4.1
Cached input / 1M$0.5 $0.125 GPT-5
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$10$11.25GPT-4.1
Modalitiestext · visiontext · visionTie
Released2025-04-142025-08-07
Cited benchmark scores109
Reliability

OpenAI status

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Which one wins on your data?

Public benchmarks are a starting point. Run GPT-4.1 and GPT-5 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.