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Gemini 3.8 Flash vs GPT-6 Sol

Gemini 3.8 Flash and GPT-6 Sol are closely matched at 49.7 and 49.4 on the LLM Stats Score. Gemini 3.8 Flash is 2.7x cheaper per token.

Google · OpenAI · Updated for 2026

Which is better?

Gemini 3.8 Flash and GPT-6 Sol are closely matched on the overall LLM Stats Score at 49.7 and 49.4.

The models split the 2 individual benchmarks reported for both models evenly.

On price, Gemini 3.8 Flash is roughly 2.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-6 Sol also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini 3.8 Flash

  • cost matters — it's about 2.7x cheaper per token

Choose GPT-6 Sol

  • you process long inputs — it offers a 1,050,000 token context window
  • you want the most recent training data — it shipped Sep 2026

At a glance

The differences that matter most.

Gemini 3.8 Flash
Google
GPT-6 Sol
OpenAI
Core performance indexes
LLM Stats Score
49.7
#19
49.4
#21
Reasoning
45.9
#28
45.6
#29
Coding
37.7
#18
35.8
#25
Agents
34.6
#22
36.7
#15
Cost, coverage & limits
Benchmark wins
1 of 2
1 of 2
Input price
$0.75 / M
$2.00 / M
Output price
$3.75 / M
$10.00 / M
Context window
1,048,576
1,050,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Gemini 3.8 Flash
GPT-6 Sol
Tool use
23.0#40
26.6#25
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for Gemini 3.8 Flash · 5 for GPT-6 Sol

2 shared

Gemini 3.8 Flash outperforms in 1 benchmarks (DeepSWE 1.1), while GPT-6 Sol is better at 1 benchmark (OSWorld 2.0).

Both models are evenly matched across the benchmarks.

Wed Sep 23 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Gemini 3.8 Flash costs less

For input processing, Gemini 3.8 Flash ($0.75/1M tokens) is 2.7x cheaper than GPT-6 Sol ($2.00/1M tokens).

For output processing, Gemini 3.8 Flash ($3.75/1M tokens) is 2.7x cheaper than GPT-6 Sol ($10.00/1M tokens).

In conclusion, GPT-6 Sol is more expensive than Gemini 3.8 Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Wed Sep 23 2026 • llm-stats.com
Google
Gemini 3.8 Flash
Input tokens$0.75
Output tokens$3.75
Best providerGoogle
OpenAI
GPT-6 Sol
Input tokens$2.00
Output tokens$10.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-6 Sol accepts 1,050,000 input tokens compared to Gemini 3.8 Flash's 1,048,576 tokens. GPT-6 Sol can generate longer responses up to 128,000 tokens, while Gemini 3.8 Flash is limited to 65,536 tokens.

Google
Gemini 3.8 Flash
Input1,048,576 tokens
Output65,536 tokens
OpenAI
GPT-6 Sol
Input1,050,000 tokens
Output128,000 tokens
Wed Sep 23 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 3.8 Flash and GPT-6 Sol support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 3.8 Flash

Text
Images
Audio
Video

GPT-6 Sol

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 3.8 Flash

Proprietary

Closed source

GPT-6 Sol

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.8 Flash was released on 2026-09-02, while GPT-6 Sol was released on 2026-09-22.

GPT-6 Sol is 1 month newer than Gemini 3.8 Flash.

Gemini 3.8 Flash

Sep 2, 2026

2 weeks ago

GPT-6 Sol

Sep 22, 2026

0 days ago

2w newer

Knowledge Cutoff

When training data ends

Gemini 3.8 Flash has a knowledge cutoff of 2026-03-31, while GPT-6 Sol has a cutoff of 2026-04-20.

GPT-6 Sol has more recent training data (up to 2026-04-20), making it potentially better informed about events through that date compared to Gemini 3.8 Flash (2026-03-31).

Gemini 3.8 Flash

Mar 2026

GPT-6 Sol

Apr 2026

1 mo newer

Provider Availability

Gemini 3.8 Flash is available from Google. GPT-6 Sol is available from OpenAI.

Gemini 3.8 Flash

google logo
Google
Input Price:Input: $0.75/1MOutput Price:Output: $3.75/1M

GPT-6 Sol

openai logo
OpenAI
Input Price:Input: $2.00/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 3.8 Flash and GPT-6 Sol side-by-side, then vote on the output you prefer.

Gemini 3.8 Flash
✓ Preferred
GPT-6 Sol
Open in Playground

FAQ

Common questions about Gemini 3.8 Flash vs GPT-6 Sol.

Which is better, Gemini 3.8 Flash or GPT-6 Sol?

Gemini 3.8 Flash and GPT-6 Sol are closely matched on the LLM Stats Score at 49.7 and 49.4. Gemini 3.8 Flash is made by Google and GPT-6 Sol is made by OpenAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 3.8 Flash compare to GPT-6 Sol in benchmarks?

Gemini 3.8 Flash scores Terminal-Bench 2.1: 89.4%, LVBench: 87.1%, CharXiv-R: 86.2%, LABBench2: 86.2%, DeepSWE 1.1: 73.7%. GPT-6 Sol scores DeepSWE 1.1: 68.8%, OSWorld 2.0: 64.4%, Agents' Last Exam: 56.4%, FrontierCode 1.1: 49.3%, AutomationBench v1.0.6: 33.2%.

Is Gemini 3.8 Flash cheaper than GPT-6 Sol?

Gemini 3.8 Flash is 2.7x cheaper for input tokens. Gemini 3.8 Flash costs $0.75/M input and $3.75/M output via google. GPT-6 Sol costs $2.00/M input and $10.00/M output via openai.

What are the context window sizes for Gemini 3.8 Flash and GPT-6 Sol?

Gemini 3.8 Flash supports 1.0M tokens and GPT-6 Sol supports 1.1M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3.8 Flash and GPT-6 Sol?

Key differences include LLM Stats Score (49.7 vs 49.4), context window (1.0M vs 1.1M), input pricing ($0.75 vs $2.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3.8 Flash and GPT-6 Sol?

Gemini 3.8 Flash is developed by Google and GPT-6 Sol is developed by OpenAI.

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