Compare · ModelsLive · 2 picked · head to head
DeepSeek V4 Flash vs gpt-oss-120b (free)
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
DeepSeek V4 Flash wins on 3/3 benchmarks
DeepSeek V4 Flash wins 3 of 3 shared benchmarks. Leads in speed.
Category leads
speed·DeepSeek V4 Flash
Hype vs Reality
Attention vs performance
DeepSeek V4 Flash
#31 by perf·no signal
gpt-oss-120b (free)
#26 by perf·no signal
Best value
DeepSeek V4 Flash
DeepSeek V4 Flash
533.3 pts/$
$0.13/M
gpt-oss-120b (free)
—
$0.00/M
Vendor risk
Mixed exposure
One or more vendors flagged
DeepSeek
$3.4B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
3 benchmarks · 2 models
DeepSeek V4 Flashgpt-oss-120b (free)
Artificial Analysis · Agentic Index
DeepSeek V4 Flash leads by +17.9
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?"
DeepSeek V4 Flash
31.1
gpt-oss-120b (free)
13.2
Artificial Analysis · Coding Index
DeepSeek V4 Flash leads by +25.7
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.
DeepSeek V4 Flash
56.2
gpt-oss-120b (free)
30.4
Artificial Analysis · Quality Index
DeepSeek V4 Flash leads by +16.5
DeepSeek V4 Flash
40.3
gpt-oss-120b (free)
23.8
Full benchmark table
| Benchmark | DeepSeek V4 Flash | gpt-oss-120b (free) |
|---|---|---|
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?" | 31.1 | 13.2 |
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. | 56.2 | 30.4 |
Artificial Analysis · Quality Index | 40.3 | 23.8 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.08 | $0.17 | 1.0M tokens (~524 books) | $1.05 | |
| $0.00 | $0.00 | 131K tokens (~66 books) | — |
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