Compare · ModelsLive · 2 picked · head to head
gpt-oss-120b (free) vs Grok 4.3
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Grok 4.3 wins on 3/3 benchmarks
Grok 4.3 wins 3 of 3 shared benchmarks. Leads in speed.
Category leads
speed·Grok 4.3
Hype vs Reality
Attention vs performance
gpt-oss-120b (free)
#26 by perf·no signal
Grok 4.3
#32 by perf·no signal
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
xAI
$250.0B·Tier 1
Head to head
3 benchmarks · 2 models
gpt-oss-120b (free)Grok 4.3
Artificial Analysis · Agentic Index
Grok 4.3 leads by +10.9
Artificial Analysis Agentic Index · a composite score measuring how well a model performs in agentic workflows · multi-step tool use, planning, error recovery, and autonomous task completion. Aggregates results from multiple agentic benchmarks including SWE-bench, tool-use tests, and planning evaluations. The canonical single-number metric for "how good is this model as an agent?"
gpt-oss-120b (free)
13.2
Grok 4.3
24.1
Artificial Analysis · Coding Index
Grok 4.3 leads by +11.8
Artificial Analysis Coding Index · a composite score that aggregates performance across multiple coding benchmarks into a single index. Tracks code generation quality, debugging ability, multi-language competence, and real-world software engineering tasks. Used by Artificial Analysis to rank model coding capability in a normalized, comparable format. Useful for developers choosing between models for coding-heavy workloads.
gpt-oss-120b (free)
30.4
Grok 4.3
42.3
Artificial Analysis · Quality Index
Grok 4.3 leads by +13.8
gpt-oss-120b (free)
23.8
Grok 4.3
37.6
Full benchmark table
| Benchmark | gpt-oss-120b (free) | Grok 4.3 |
|---|---|---|
Artificial Analysis · Agentic Index Artificial Analysis Agentic Index · a composite score measuring how well a model performs in agentic workflows · multi-step tool use, planning, error recovery, and autonomous task completion. Aggregates results from multiple agentic benchmarks including SWE-bench, tool-use tests, and planning evaluations. The canonical single-number metric for "how good is this model as an agent?" | 13.2 | 24.1 |
Artificial Analysis · Coding Index Artificial Analysis Coding Index · a composite score that aggregates performance across multiple coding benchmarks into a single index. Tracks code generation quality, debugging ability, multi-language competence, and real-world software engineering tasks. Used by Artificial Analysis to rank model coding capability in a normalized, comparable format. Useful for developers choosing between models for coding-heavy workloads. | 30.4 | 42.3 |
Artificial Analysis · Quality Index | 23.8 | 37.6 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.00 | $0.00 | 131K tokens (~66 books) | — | |
| $1.25 | $2.50 | 1.0M tokens (~500 books) | $15.63 |