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Gemini 2.5 Pro (batch) vs GPT-5.6 Luna Pro (batch)

Signal-by-Signal Comparison
SignalGemini 2.5 Pro (batch)DeltaGPT-5.6 Luna Pro (batch)
Capabilities
100
--
100
Benchmarks
80
-8
88
Pricing
95
-4
99
Context window size
96
0
96
Recency
50
-50
100
Output Capacity
77
-5
82
Overall Result
0 wins
of 6
5 wins
GPT-5.6 Luna Pro (batch) wins 5 of 6 signals

Score History

Score History (6 data points)
Gemini 2.5 Pro (batch)GPT-5.6 Luna Pro (batch)
Gemini 2.5 Pro (batch)

83.5

current score

Leader

GPT-5.6 Luna Pro (batch)

right now

GPT-5.6 Luna Pro (batch)

89

current score

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

Gemini 2.5 Pro (batch)

Google

Per request$0.003125
Daily$10.42
Monthly$312.50
Annual$3750.00

GPT-5.6 Luna Pro (batch)

OpenAI

Best Value
Per request$0.000400
Daily$1.33
Monthly$40.00
Annual$480.00

GPT-5.6 Luna Pro (batch) saves you $272.50/month

That's $3270.00/year compared to Gemini 2.5 Pro (batch) at your current usage level of 100K calls/month.

87% cheaper
Choose GPT-5.6 Luna Pro (batch) for cost optimization

Gemini 2.5 Pro (batch) pricing:
Input:$0.63/M tokens
Output:$5.00/M tokens
GPT-5.6 Luna Pro (batch) pricing:
Input:$0.10/M tokens
Output:$0.60/M tokens
Gemini 2.5 Pro (batch)

Google

84

Composite Score

Winner
GPT-5.6 Luna Pro (batch)

OpenAI

89

Composite Score

Signal-by-Signal Comparison
MetricGemini 2.5 Pro (batch)GPT-5.6 Luna Pro (batch)Winner
Overall Score
84
89
GPT-5.6 Luna Pro (batch)
Rank#67#31
GPT-5.6 Luna Pro (batch)
Quality Rank#67#31
GPT-5.6 Luna Pro (batch)
Adoption Rank#67#31
GPT-5.6 Luna Pro (batch)
Parameters------
Context Window1049K1050K
GPT-5.6 Luna Pro (batch)
Pricing$0.63/$5.00/M$0.10/$0.60/M--
Signal Scores
Capabilities
100
100
Gemini 2.5 Pro (batch)
Benchmarks
80
88
GPT-5.6 Luna Pro (batch)
Pricing
95
99
GPT-5.6 Luna Pro (batch)
Context window size
96
96
GPT-5.6 Luna Pro (batch)
Recency
50
100
GPT-5.6 Luna Pro (batch)
Output Capacity
77
82
GPT-5.6 Luna Pro (batch)
Benchmark Head-to-Head(13 benchmarks)
Gemini 2.5: 3GPT-5.6 Luna: 7
Gemini 2.5
GPT-5.6 Luna
Normalized 0-100%
MMLU
90.8%93%
MMLU-Pro
86%84.5%
GPQA Diamond
84%85%
MATH-500
95.2%92.5%
HumanEval
-96.5%
SWE-bench Verified
63.8%75%
AIME 2024
92%-
IFEval
87.2%92%
BBH
88%90.5%
Arena Elo
14441465
LiveBench
75.6%76%
HLE
35.2%35%
BigCodeBench
29.7%-
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.

Gemini 2.5 Pro (batch)Strong Performer

Scores 84/100 (rank #67), placing it in the top 77% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
GPT-5.6 Luna Pro (batch)Elite Tier

Scores 89/100 (rank #31), placing it in the top 90% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

GPT-5.6 Luna Pro (batch) has a 6-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.

When to Use Each Model

Choose Gemini 2.5 Pro (batch) when you need:

  • Step-by-step reasoning and chain-of-thought problem solving

Choose GPT-5.6 Luna Pro (batch) when you need:

  • High-volume production workloads where API costs must be minimized
  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Gemini 2.5 Pro (batch)
Input cost$0.63/M tokens
Output cost$5.00/M tokens
Cost per quality point$0.067
Est. monthly (1M tokens/day)$84.38
GPT-5.6 Luna Pro (batch)Best Value
Input cost$0.10/M tokens
Output cost$0.60/M tokens
Cost per quality point$0.008
Est. monthly (1M tokens/day)$10.50

GPT-5.6 Luna Pro (batch) offers 88% better value per quality point. At 1M tokens/day, you'd spend $10.50/month with GPT-5.6 Luna Pro (batch) vs $84.38/month with Gemini 2.5 Pro (batch) - a $73.88 monthly difference.

Latency & Speed
Gemini 2.5 Pro (batch)Faster
Speed score0/100
GPT-5.6 Luna Pro (batch)
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

Gemini 2.5 Pro (batch)

Customer support chatbot

Suitable for user-facing chat with competitive response times. GPT-5.6 Luna Pro (batch) also offers lower per-token costs for high-volume support

Gemini 2.5 Pro (batch)

Long document analysis

Larger context window (1050K tokens) can process longer documents, contracts, and research papers in a single pass

GPT-5.6 Luna Pro (batch)

Batch data extraction

Lower output pricing ($0.60/M) reduces costs when processing thousands of records daily

GPT-5.6 Luna Pro (batch)

Creative writing & content

Higher overall composite score (89/100) correlates with better nuance, coherence, and style in long-form content

GPT-5.6 Luna Pro (batch)

Image understanding & OCR

Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly

Gemini 2.5 Pro (batch)
Which Should You Choose?
Our recommendation:
GPT-5.6 Luna Pro (batch)

GPT-5.6 Luna Pro (batch) has a moderate advantage with a 5.5-point lead in composite score. It wins on more signal dimensions, but Gemini 2.5 Pro (batch) has specific strengths that could make it the better choice for certain workflows.

by Google

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • 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 OpenAI

  • Choose for Cost - 88% lower pricing; better value at scale
Capability Comparison
CapabilityGemini 2.5 Pro (batch)GPT-5.6 Luna Pro (batch)
Vision (Image Input)
Function Calling
Streaming
JSON Mode
Reasoning
Web Search
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

Gemini 2.5 Pro (batch)

Google

$7.13
estimated monthly cost

GPT-5.6 Luna Pro (batch)

OpenAI

Best Value
$0.9000
estimated monthly cost

GPT-5.6 Luna Pro (batch) saves you $6.22/month

That's 87% cheaper than Gemini 2.5 Pro (batch) 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
ParameterGemini 2.5 Pro (batch)GPT-5.6 Luna Pro (batch)
Context Window1.0M1.1M
Max Output Tokens65,536128,000
Open SourceNoNo
CreatedJun 17, 2025Jul 9, 2026
Last updated: 13m ago

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Gemini 2.5 Pro (batch) vs GPT-5.6 Luna Pro (batch) (2026) | LM Market Cap