Skip to main content
BenchLM
Advertise

Model comparison

GPT-5.4 Pro vs MiMo-V2-Flash

Data verified

Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.

60.89/100
Margin
6.8pts
← winning
54.06/100
0 category wins1 category wins

Public leaderboard positions: GPT-5.4 Pro #44 (Estimated); MiMo-V2-Flash #91 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. GPT-5.4 Pro and MiMo-V2-Flash share 1 comparable benchmark result. 1 of 8 categories are comparable. 11 results are unique to GPT-5.4 Pro; 18 to MiMo-V2-Flash.

Updated July 23, 2026
Shared results
1
GPT-5.4 Pro only
11
MiMo-V2-Flash only
18
Comparable categories
1 / 8

Pick GPT-5.4 Pro if you want the stronger benchmark profile. MiMo-V2-Flash only becomes the better choice if knowledge is the priority or you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

GPT-5.4 Pro is clearly ahead on the BenchAlign aggregate, 60.89 to 54.06. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GPT-5.4 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for MiMo-V2-Flash. That is roughly Infinityx on output cost alone. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 256K for MiMo-V2-Flash.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for GPT-5.4 Pro and MiMo-V2-Flash
CategoryGPT-5.4 ProΔMiMo-V2-Flash
KnowledgeGPT-5.4 Pro58.7Margin→ 26.0MiMo-V2-Flash84.7
AgenticGPT-5.4 Pro89.3MarginNo overlapMiMo-V2-FlashNot measured
CodingGPT-5.4 ProNot measuredMarginNo overlapMiMo-V2-Flash73.4
ReasoningGPT-5.4 Pro83.3MarginNo overlapMiMo-V2-FlashNot measured
MathGPT-5.4 Pro46.9MarginNo overlapMiMo-V2-FlashNot measured
MultimodalGPT-5.4 Pro94.0MarginNo overlapMiMo-V2-FlashNot measured

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricGPT-5.4 ProMiMo-V2-FlashComparison
Input / output priceUSD per 1M tokensGPT-5.4 Pro$30 input / $180 outputMiMo-V2-Flash$0 input / $0 outputMiMo-V2-Flash has the lower combined listed price.
Generation speedtokens per secondGPT-5.4 Pro74 tok/sMiMo-V2-Flash129 tok/sMiMo-V2-Flash has the higher measured throughput.
First-answer latencyseconds to first tokenGPT-5.4 Pro151.79 sMiMo-V2-Flash2.14 sMiMo-V2-Flash reaches the first token sooner.
Context windowmaximum listed tokensGPT-5.4 Pro1.05MMiMo-V2-Flash256KGPT-5.4 Pro lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkGPT-5.4 ProMiMo-V2-FlashResult
BrowseCompSource 89.3%—Not comparable
AA Agentic IndexSource —12.0%Not comparable
τ²-bench resultsSource —83.9%Not comparable
GDPval-AASource —16.7%Not comparable
GDPval-AASource —833Not comparable
Coding
BenchmarkGPT-5.4 ProMiMo-V2-FlashResult
SWE-bench VerifiedSource —73.4%Not comparable
AA Coding IndexSource —49.8%Not comparable
AA-SciCodeSource —25.9%Not comparable
Reasoning
BenchmarkGPT-5.4 ProMiMo-V2-FlashResult
ARC-AGI-2Source 83.3%—Not comparable
CritPtSource 30.0%0.0%GPT-5.4 Pro leads
AA-LCRSource —31.3%Not comparable
KnowledgeMiMo-V2-Flash wins
BenchmarkGPT-5.4 ProMiMo-V2-FlashResult
HLESource 58.7%—Not comparable
FrontierScienceSource 36.7%—Not comparable
FrontierScience ResearchSource 36.7%—Not comparable
HLE w/o toolsSource 42.7%—Not comparable
GPQASource —83.7%Not comparable
MMLU-ProSource —84.9%Not comparable
Artificial Analysis Intelligence IndexSource —24.7%Not comparable
AA-GPQA DiamondSource —65.6%Not comparable
AA-HLESource —8.0%Not comparable
AA-Omniscience IndexSource —-48.5%Not comparable
AA-Omniscience AccuracySource —15.2%Not comparable
AA-Omniscience Hallucination RateSource —75.1%Not comparable
Math
BenchmarkGPT-5.4 ProMiMo-V2-FlashResult
IPhO 2025 (Theory)Source 93.5%—Not comparable
FrontierMath (legacy)Source 50%—Not comparable
FrontierMath v2 (Tiers 1-3)Source 50.000%—Not comparable
FrontierMath v2 (Tier 4)Source 37.500%—Not comparable
AIME 2025Source —94.1%Not comparable
Multimodal
BenchmarkGPT-5.4 ProMiMo-V2-FlashResult
MMMU-ProSource 94%—Not comparable
Inst. Following
BenchmarkGPT-5.4 ProMiMo-V2-FlashResult
AA-IFBenchSource —39.9%Not comparable
Frequently Asked Questions (2)

Which is better, GPT-5.4 Pro or MiMo-V2-Flash?

GPT-5.4 Pro is ahead on BenchLM's BenchAlign leaderboard, 60.89 to 54.06.

Which is better for knowledge tasks, GPT-5.4 Pro or MiMo-V2-Flash?

MiMo-V2-Flash has the edge for knowledge tasks in this comparison, averaging 84.7 versus 58.7. GPT-5.4 Pro stays close enough that the answer can still flip depending on your workload.

Related Comparisons

Explore More

OpenAI Compare Pricing Methodology Find Your Best LLM Overall Rankings
Last updated: July 23, 2026

Choose a model with this week’s evidence

Join 2,000+ readers for ranking moves, pricing changes, and the claims that still need proof.

One email each week. Unsubscribe anytime.