Compare · ModelsLive · 2 picked · head to head
gpt-oss-20b vs Grok 4.3
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Grok 4.3 wins on 1/1 benchmarks
Grok 4.3 wins 1 of 1 shared benchmarks. Leads in arena.
Category leads
arena·Grok 4.3
Hype vs Reality
Attention vs performance
gpt-oss-20b
#29 by perf·no signal
Grok 4.3
#32 by perf·no signal
Best value
gpt-oss-20b
22.4x better value than Grok 4.3
gpt-oss-20b
797.6 pts/$
$0.08/M
Grok 4.3
35.6 pts/$
$1.88/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
xAI
$250.0B·Tier 1
Head to head
1 benchmark · 2 models
gpt-oss-20bGrok 4.3
Chatbot Arena Elo · Overall
Grok 4.3 leads by +126.5
gpt-oss-20b
1317.6
Grok 4.3
1444.0
Full benchmark table
| Benchmark | gpt-oss-20b | Grok 4.3 |
|---|---|---|
Chatbot Arena Elo · Overall | 1317.6 | 1444.0 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.03 | $0.14 | 131K tokens (~66 books) | $0.57 | |
| $1.25 | $2.50 | 1.0M tokens (~500 books) | $15.63 |