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gpt-oss-120b vs Laguna S 2.1

gpt-oss-120b

OpenAI

41#183
vs
Laguna S 2.1

poolside

40#184
Signal-by-Signal Comparison
Signalgpt-oss-120bDeltaLaguna S 2.1
Capabilities
67
+17
50
Benchmarks
46
+46
0
Pricing
100
--
100
Context window size
81
-14
96
Recency
69
-31
100
Output Capacity
85
--
85
Overall Result
2 wins
of 6
2 wins
It's a tie - both models win 2 signals each

Score History

Score History (23 data points)
gpt-oss-120bLaguna S 2.1
gpt-oss-120b

40.5

current score

Leader

gpt-oss-120b

right now

Laguna S 2.1

40

current score

LMMarketCap.com
Interactive Price Comparison
100Kcalls/month
1,000tokens (~1,333 chars)
500tokens (~667 chars)

gpt-oss-120b

OpenAI

Best Value
Per request$0.000122
Daily$0.41
Monthly$12.20
Annual$146.40

Laguna S 2.1

poolside

Per request$0.000200
Daily$0.67
Monthly$20.00
Annual$240.00

gpt-oss-120b saves you $7.80/month

That's $93.60/year compared to Laguna S 2.1 at your current usage level of 100K calls/month.

39% cheaper
Choose gpt-oss-120b for cost optimization

gpt-oss-120b pricing:
Input:$0.04/M tokens
Output:$0.17/M tokens
Laguna S 2.1 pricing:
Input:$0.10/M tokens
Output:$0.20/M tokens
Winner
gpt-oss-120b

OpenAI

41

Composite Score

Laguna S 2.1

poolside

40

Composite Score

Signal-by-Signal Comparison
Metricgpt-oss-120bLaguna S 2.1Winner
Overall Score
41
40
gpt-oss-120b
Rank#183#184
gpt-oss-120b
Quality Rank#183#184
gpt-oss-120b
Adoption Rank#183#184
gpt-oss-120b
Parameters120B----
Context Window131K1049K
Laguna S 2.1
Pricing$0.04/$0.17/M$0.10/$0.20/M--
Signal Scores
Capabilities
67
50
gpt-oss-120b
Benchmarks
46
--
gpt-oss-120b
Pricing
100
100
gpt-oss-120b
Context window size
81
96
Laguna S 2.1
Recency
69
100
Laguna S 2.1
Output Capacity
85
85
gpt-oss-120b
Benchmark Head-to-Head(2 benchmarks)
gpt-oss-120b: 0Laguna S: 0
gpt-oss-120b
Laguna S
Normalized 0-100%
SWE-bench Verified
26%-
Arena Elo
1353-
Benchmark Interpretation

Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.

gpt-oss-120bEntry Level

Scores 41/100 (rank #183), placing it in the top 37% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
Laguna S 2.1Entry Level

Scores 40/100 (rank #184), placing it in the top 37% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

With only a 1-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.

When to Use Each Model

Choose gpt-oss-120b when you need:

  • Step-by-step reasoning and chain-of-thought problem solving
  • Self-hosted deployments where you need full control over the model

Choose Laguna S 2.1 when you need:

  • Processing long documents or large codebases (1049K token context)
  • Step-by-step reasoning and chain-of-thought problem solving
  • Self-hosted deployments where you need full control over the model
Cost-Performance Analysis
gpt-oss-120bBest Value
Input cost$0.04/M tokens
Output cost$0.17/M tokens
Cost per quality point$0.005
Est. monthly (1M tokens/day)$3.10
Laguna S 2.1
Input cost$0.10/M tokens
Output cost$0.20/M tokens
Cost per quality point$0.007
Est. monthly (1M tokens/day)$4.50

gpt-oss-120b offers 31% better value per quality point. At 1M tokens/day, you'd spend $3.10/month with gpt-oss-120b vs $4.50/month with Laguna S 2.1 - a $1.39 monthly difference.

Latency & Speed
gpt-oss-120bFaster
Speed score0/100
Laguna S 2.1
Speed score0/100

Both models have comparable response speeds. For most applications, the latency difference is negligible.

When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.

Example Use Cases

Code generation & review

Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring

gpt-oss-120b

Customer support chatbot

Suitable for user-facing chat with competitive response times. gpt-oss-120b also offers lower per-token costs for high-volume support

gpt-oss-120b

Long document analysis

Larger context window (1049K tokens) can process longer documents, contracts, and research papers in a single pass

Laguna S 2.1

Batch data extraction

Lower output pricing ($0.17/M) reduces costs when processing thousands of records daily

gpt-oss-120b

Creative writing & content

Higher overall composite score (41/100) correlates with better nuance, coherence, and style in long-form content

gpt-oss-120b
Which Should You Choose?
Our recommendation:
gpt-oss-120b

gpt-oss-120b and Laguna S 2.1 are extremely close in overall performance (only 0.5 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.

gpt-oss-120b
Recommended

by OpenAI

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Cost - 31% lower pricing; better value at scale
  • Choose for Reliability - Higher uptime and faster response speeds
  • Choose for Prototyping - Stronger community support and better developer experience
  • Choose for Production - Wider enterprise adoption and proven at scale

by poolside

Consider for specialized use cases.

Capability Comparison
Capabilitygpt-oss-120bLaguna S 2.1
Vision (Image Input)
Function Calling
Streaming
JSON Modediffers
Reasoning
Web Search
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

gpt-oss-120b

OpenAI

Best Value
$0.2706
estimated monthly cost

Laguna S 2.1

poolside

$0.4200
estimated monthly cost

gpt-oss-120b saves you $0.1494/month

That's 36% cheaper than Laguna S 2.1 at 1,000 tokens/request and 100 requests/day.

Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.

Parameters & Context
Parametergpt-oss-120bLaguna S 2.1
Context Window131K1.0M
Max Output Tokens131,072131,072
Open SourceYesYes
CreatedAug 5, 2025Jul 21, 2026
Last updated: 15m ago

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gpt-oss-120b vs Laguna S 2.1 (2026) | LM Market Cap