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Compare / head-to-head

GPT-5.4 ProvsSeed2.1 Pro

GPT-5.4 Pro and Seed2.1 Pro do not yet share a public benchmark, so quality cannot be compared apples-to-apples.

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

Shared benchmarks
0
no overlap yet
Cheaper per token
list price, input + output
Larger context
both 1.1M tokens
Provider uptime (30d)
94.2446% · —
OpenAI · ByteDance Seed
GPT-5.4 Pro
OpenAI · released 2026-03-05
textvision
Context
1.1M
Max out
128K
Input /1M
$30
Output /1M
$180
Cached /1M
Scores
13 · 8 core
Seed2.1 Pro
ByteDance Seed · released 2026-07-13
textvisionvideo
Context
Max out
Input /1M
Output /1M
Cached /1M
Scores
26 · 2 core
Quality

Benchmark matrix

BenchmarkGPT-5.4 ProSeed2.1 ProΔEdge
Reported by both · 0
No public benchmark is reported for both models yet.
Only GPT-5.4 Pro reports · 12
GPQA Diamond94.4% not reported
Humanity's Last Exam (no tools)42.7% not reported
ARC-AGI-1 (Verified)94.5% not reported
ARC-AGI-2 (Verified)83.3% not reported
BrowseComp89.3% not reported
FrontierMath Tier 1-350% not reported
FrontierMath Tier 438% not reported
FrontierMath Tier 4 v2 (Epoch AI run)58.5% epochnot reported
FrontierMath Tiers 1-3 v2 (Epoch AI run)82.5% epochnot reported
GDPval (wins or ties)82% not reported
Humanity's Last Exam (with tools)58.7% not reported
SimpleQA Verified46.3% epochnot reported
Only Seed2.1 Pro reports · 26
Agent Startup Benchnot reported68.8%
BabyVisionnot reported73.7%
BeyondAIMEnot reported87%
CharXiv-RQnot reported85.4%
CharXiv-RQ (with tools)not reported86.4%
ERQAnot reported72%
KINAnot reported48.3%
MathVisionnot reported92.6%
MathVision (with tools)not reported94.5%
Minerva Video Reasoningnot reported70.7%
MMLongBench 128Knot reported78.3%
MMMU-Pronot reported81.6%
MMMU-Pro (with tools)not reported82.7%
NL2Repo-Benchnot reported47%
OVOBenchnot reported80.7%
SuperGPQAnot reported70.8%
SWE-Atlasnot reported35.2%
Terminal-Bench 2.1not reported71%
TOMATOnot reported79.5%
VideoMMEnot reported89.2%
VideoSimpleQAnot reported76.4%
Workspace Benchnot reported53%
WorldVQAnot reported53%
xDailyBenchnot reported61%
ZEROBenchnot reported18%
ZEROBench (with tools)not reported22%
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-5.4 Pro minus Seed2.1 Pro 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-5.4 ProSeed2.1 ProEdge
Context window1.1M tokens
Max output128K tokens
Input price / 1M$30
Output price / 1M$180
Cached input / 1M
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$210
Modalitiestext · visiontext · vision · videoSeed2.1 Pro
Released2026-03-052026-07-13
Cited benchmark scores1326
Reliability

Provider status

All providers
More matchups

GPT-5.4 Pro vs …

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Which one wins on your data?

Public benchmarks are a starting point. Run GPT-5.4 Pro and Seed2.1 Pro on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.