GPT-OSS 120B gpt-oss-120b

openai · gpt-oss reasoning flagship efficient

unranked — no quality signals yet

params
117B (A5.1B)
arch
moe
context
128k
license
apache-2.0 open weights
released
Aug 2025
reasoning
yes
train compute
4.9e+24 FLOP
downloads/30d
2.5M

# architecture

attn shared · reasoning GQA 64q/8kv router top-4 of 128 expert ×128 expert out ×36 layers ctx 131,072 117B pool · A5.1B/token
layers
36
d_model
2880
heads
64q / 8kv
head dim
64
experts
top-4 of 128
vocab
201088
family
gpt_oss

signal path of one layer, generated from the registry's structured fields — dimension lines quote the model's real numbers; an MoE trace forks at the router, a dense trace runs straight through. Geometry fields come from the repo's config.json.

# why ranked

Overall: provisional — score 29.2 ● low — a single signal; treat with caution

provisional: too few independent signals for a numbered position — the score is shown, but this model sorts after every ranked model.

signalweightinput (0–100)
aa_intelligence 0.70 —
bench_composite 0.30 29.2

benchmark panel evidence:

complete panelscore (0–100)
aider-polyglot-v147.9
swe-bench-verified-v110.4

missing signals are dropped and the remaining weights renormalized — never imputed.

Coding: #5 — score 19.5 ● medium — one signal missing, weights renormalized

signalweightinput (0–100)
aa_coding 0.30 —
aider_polyglot 0.30 45.5
swe_bench_verified 0.40 0.0

missing signals are dropped and the remaining weights renormalized — never imputed.

Agentic: #22 — score — ● low — a single signal; treat with caution

signalweightinput (0–100)
swe_bench_verified 0.60 0.0
swe_rebench 0.40 —

missing signals are dropped and the remaining weights renormalized — never imputed.

full methodology

# trend

OGM score · last 112 days
OGM score over 112 days
overall rank (up is better)
Overall rank over 112 days

methodology changed during this history window; score movement across that boundary is not model movement. See methodology v6.

# benchmarks

benchmarkscoresourcedate
Aider Polyglot 41.8 Aider Aug 2025
Codeforces 0.8 / 3000 LLM Stats —
SWE-bench Verified 26.0 SWE-bench Aug 2025

# where to run

providerquantctx$/M in$/M out$/M cacheprice srctpsuptime✓
Featherless — ——— via hfrouter — —
PrimeIntellectfp4 128k $0.02$0.07$0.02 via openrouter — 98.5%
Near AIfp4 128k $0.03$0.15$0.01 via openrouter — 100.0%
CoreWeavefp4 128k $0.03$0.17$0.03 via openrouter — 99.9%
Wandb 131k $0.03$0.17— via litellm — —
DekaLLMbf16 128k $0.03$0.18$0.03 via openrouter — 100.0%
AkashMLbf16 128k $0.03$0.19$0.03 via openrouter — 100.0%
DeepInfrabf16 128k $0.04$0.17— deepinfra — 99.9% ✓
DeepInfrafp8 128k $0.04$0.17— deepinfra — 85.5% ✓
Kyma 125k $0.05$0.23— via litellm — —
Crusoebf16 128k $0.05$0.25$0.05 via openrouter — 100.0%
Mancer 2fp8 128k $0.05$0.25— via openrouter — 99.9%
Novitafp4 128k $0.05$0.25— novita — 99.6% ✓
Veniceint4 125k $0.07$0.30— venice — 98.4% ✓
Amazon Bedrockunknown 128k $0.07$0.30— bedrock — 100.0% ✓
Amazon Bedrockunknown 128k $0.07$0.30— bedrock — 100.0% ✓
Sail 128k $0.06$0.40— via litellm — —
Sail Researchfp4 128k $0.06$0.40$0.03 via openrouter — 100.0%
DigitalOceanunknown 125k $0.06$0.42$0.01 via openrouter — 100.0%
Googleunknown 128k $0.09$0.36— via openrouter — 62.5%
Nscale 128k $0.10$0.40— via hfrouter 116 —
OVHcloud 128k $0.09$0.47— ovhcloud 41 — ✓
BaseTenfp4 128k $0.10$0.50$0.10 via openrouter — 98.8%
BaseTenfp4 128k $0.10$0.50$0.10 via openrouter — 97.8%
Aiand 128k $0.15$0.60— via litellm — —
Azure — $0.15$0.60— azure — — ✓
Bedrock Mantle 128k $0.15$0.60— via litellm — —
Fireworks 128k $0.15$0.60$0.01 via requesty — —
Groqunknown 128k $0.15$0.60— groq — 100.0% ✓
Nebiusfp4 128k $0.15$0.60$0.10 openrouter — 100.0% ✓
Phalaunknown 128k $0.15$0.60— phala — 99.4% ✓
SiliconFlowfp8 128k $0.15$0.60$0.07 openrouter — 85.7% ✓
Tensormesh 128k $0.15$0.60— via litellm — —
Togetherunknown 128k $0.15$0.60— via openrouter — 100.0%
Zerogpu 125k $0.15$0.60— via litellm — —
Parasailfp4 128k $0.10$0.75$0.06 via openrouter — 100.0%
IBM watsonx 128k $0.16$0.64— via modelsdev — —
Scaleway — $0.17$0.68— via hfrouter 136 —
Maraunknown 128k $0.15$0.75— via openrouter — 99.5%
SambaNovaunknown 128k $0.22$0.59— sambanova — 99.7% ✓
Replicate — $0.18$0.72— via litellm — —
Inferenceapis 128k $0.20$0.80— via litellm — —
Cerebrasfp16 128k $0.35$0.75$0.35 openrouter — 100.0% ✓
Cloudflare 125k $0.35$0.75— via modelsdev — —

sorted by blended price ((3·input + output) / 4 per 1M) · ✓ = the provider's own catalog confirms the offer · "via …" prices are what the aggregator routing the offer charges, not the provider's own list price

source aliases
aa
gpt-oss-120b
aider
gpt-oss-120b (high)
arena
gpt-oss-120b
openrouter
openai/gpt-oss-120b