Gemini 2.5 Flash Lite vs Llama 3.1 8B Instruct

Gemini 2.5 Flash Lite leads Llama 3.1 8B Instruct on the Artificial Analysis Intelligence Index, 10.4 to 6.9, and Llama 3.1 8B Instruct costs 5.0x less per output token ($0.08 vs $0.40 per million). Updated October 21, 2026; 15 benchmarks have a result for both.

Replace Gemini 2.5 Flash Lite Replace Llama 3.1 8B Instruct

Gemini 2.5 Flash LiteGoogle

Coding: No data
Overall: No data
Output $/M: $0.40

Llama 3.1 8B InstructMeta Llama

Coding: No data
Overall: 17.9
Output $/M: $0.08

vs boards won of 15 shared

Gemini 2.5 Flash Lite or Llama 3.1 8B Instruct: which to pick

Neither model has a coding score yet, so the two cannot be ranked on coding.

Pick Gemini 2.5 Flash Lite for a larger context window (1.05M against 131K tokens).

Model AGemini 2.5 Flash LiteGoogleNot benchmarkedNo coding benchmarkNo cost per solved task Model BLlama 3.1 8B InstructMeta LlamaNot benchmarkedNo coding benchmarkNo cost per solved task

151536

Shared results: 15
Gemini 2.5 Flash Lite only: 15
Llama 3.1 8B Instruct only: 36
Like-for-like categories: 7 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

Coding
Vibe Coding Index, six public coding benchmarks
No call
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
Gemini 2.5 Flash Lite
Gemini 2.5 Flash Lite leads, 10.4 against 6.9.
Same board, both measured
Reasoning
GPQA Diamond
No call
Only Gemini 2.5 Flash Lite has a GPQA Diamond result, 70.2%.
Directional only
Math
AIME
No call
Only Gemini 2.5 Flash Lite has a AIME result, 42.1%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 2.5 Flash Lite has a MMLU Pro result, 79.1%.
Directional only
Long documents
Listed context window
Gemini 2.5 Flash Lite
Gemini 2.5 Flash Lite takes 1.05M tokens against 131K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Llama 3.1 8B Instruct
Gemini 2.5 Flash Lite $0.0003, Llama 3.1 8B Instruct $0.0001 per turn.
List prices

At a glance

Coding index: Gemini 2.5 Flash Lite not benchmarked, Llama 3.1 8B Instruct not benchmarked.
Widest category: Math, 49.0 points apart on average over 2 shared benchmarks.
Widest single gap: AA Math Index: Gemini 2.5 Flash Lite 53.3 against Llama 3.1 8B Instruct 4.3, 49.0 points apart on a 0 to 100 scale.
Output price: Gemini 2.5 Flash Lite $0.40 against Llama 3.1 8B Instruct $0.08 per million output tokens, 5.0x apart.
Context window: Gemini 2.5 Flash Lite takes 1.05M tokens, Llama 3.1 8B Instruct 131K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
Category	Gemini 2.5 Flash Lite	Bars	Llama 3.1 8B Instruct	Ties
Coding	2		0
Intelligence	2		0
Agentic work	2		0
Reasoning	2		0
Math	2		0
Knowledge	1		0
General	4		0
All shared boards	15		0

CodingLike-for-likeSix of these boards feed the Vibe Coding Index20

Coding benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
AA Coding Index	Not measured	5.4	Only Llama 3.1 8B Instruct measured
LiveCodeBench (Vals AI)	71.4%	Not measured	Only Gemini 2.5 Flash Lite measured
LiveCodeBench (Artificial Analysis run)	59.3%	11.6%	Gemini 2.5 Flash Lite
Terminal-Bench Hard (Artificial Analysis run)	4.5%	0.8%	Gemini 2.5 Flash Lite
WeirdML	Not measured	1.7%	Only Llama 3.1 8B Instruct measured
LMArena Text: coding	Not measured	1195	Only Llama 3.1 8B Instruct measured
LMArena Text: software and IT	Not measured	1195	Only Llama 3.1 8B Instruct measured
Neither model has a result on the other 32 boards here

IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20

Intelligence benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
AA Intelligence Index	10.4	6.9	Gemini 2.5 Flash Lite
Epoch Capabilities Index	133.8	116.5	Gemini 2.5 Flash Lite

Agentic workLike-for-likePublic boards, shown as published, kept out of the index20

Agentic work benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
τ²-Bench Telecom	19.0%	16.4%	Gemini 2.5 Flash Lite
BALROG	Not measured	15.1%	Only Llama 3.1 8B Instruct measured
Berkeley Function Calling Leaderboard (BFCL)	36.9%	25.8%	Gemini 2.5 Flash Lite
Neither model has a result on the other 38 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index20

Reasoning benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
GPQA Diamond	70.2%	Not measured	Only Gemini 2.5 Flash Lite measured
MMMU Pro (Vals AI)	75.4%	Not measured	Only Gemini 2.5 Flash Lite measured
GPQA Diamond (Artificial Analysis run)	62.5%	25.9%	Gemini 2.5 Flash Lite
Humanity's Last Exam (Artificial Analysis run)	6.8%	5.3%	Gemini 2.5 Flash Lite
GPQA Diamond (Epoch AI run)	Not measured	27.0%	Only Llama 3.1 8B Instruct measured
LMArena Text: hard prompts	Not measured	1175	Only Llama 3.1 8B Instruct measured
LMArena Text: expert	Not measured	1144	Only Llama 3.1 8B Instruct measured
LMArena Text: hard prompts in English	Not measured	1196	Only Llama 3.1 8B Instruct measured
Kagi LLM Benchmark	40.5%	Not measured	Only Gemini 2.5 Flash Lite measured
Neither model has a result on the other 13 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index20

Math benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
AIME	42.1%	Not measured	Only Gemini 2.5 Flash Lite measured
MGSM (Vals AI)	89.5%	Not measured	Only Gemini 2.5 Flash Lite measured
AA Math Index	53.3	4.3	Gemini 2.5 Flash Lite
AIME 2025 (Artificial Analysis run)	53.3%	4.3%	Gemini 2.5 Flash Lite
OTIS Mock AIME	Not measured	1.7%	Only Llama 3.1 8B Instruct measured
MATH level 5	Not measured	22.9%	Only Llama 3.1 8B Instruct measured
GSM8K	Not measured	82.4%	Only Llama 3.1 8B Instruct measured
LMArena Text: math	Not measured	1179	Only Llama 3.1 8B Instruct measured
LMArena Text: mathematical work	Not measured	1180	Only Llama 3.1 8B Instruct measured
Neither model has a result on the other 4 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index10

Knowledge benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
MMLU Pro	79.1%	Not measured	Only Gemini 2.5 Flash Lite measured
LegalBench (Vals AI)	82.0%	Not measured	Only Gemini 2.5 Flash Lite measured
CorpFin (Vals AI)	57.6%	Not measured	Only Gemini 2.5 Flash Lite measured
TaxEval (Vals AI)	66.2%	Not measured	Only Gemini 2.5 Flash Lite measured
MortgageTax (Vals AI)	57.6%	Not measured	Only Gemini 2.5 Flash Lite measured
MedQA (Vals AI)	88.9%	Not measured	Only Gemini 2.5 Flash Lite measured
MedCode (Vals AI)	34.2%	Not measured	Only Gemini 2.5 Flash Lite measured
MMLU Pro (Artificial Analysis run)	75.9%	47.6%	Gemini 2.5 Flash Lite
MMLU	Not measured	56.1%	Only Llama 3.1 8B Instruct measured
LMArena Text: science	Not measured	1193	Only Llama 3.1 8B Instruct measured
LMArena Text: medicine and healthcare	Not measured	1182	Only Llama 3.1 8B Instruct measured
LMArena Text: legal and government	Not measured	1206	Only Llama 3.1 8B Instruct measured
LMArena Text: business and finance	Not measured	1166	Only Llama 3.1 8B Instruct measured
Neither model has a result on the other 5 boards here

Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared

Web design benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
Neither model has a result on 9 boards here

GeneralLike-for-likePublic boards, shown as published, kept out of the index40

General benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
SAGE (Vals AI)	30.8%	Not measured	Only Gemini 2.5 Flash Lite measured
MedScribe (Vals AI)	75.8%	Not measured	Only Gemini 2.5 Flash Lite measured
IFBench	49.9%	28.6%	Gemini 2.5 Flash Lite
Long context reasoning (AA-LCR)	55.7%	18.0%	Gemini 2.5 Flash Lite
DTBench	62.8%	50.9%	Gemini 2.5 Flash Lite
LMCA	18.1%	5.4%	Gemini 2.5 Flash Lite
PIQA	Not measured	81.2%	Only Llama 3.1 8B Instruct measured
LMArena Text	Not measured	1187	Only Llama 3.1 8B Instruct measured
LMArena Text: instruction following	Not measured	1159	Only Llama 3.1 8B Instruct measured
LMArena Text: creative writing	Not measured	1154	Only Llama 3.1 8B Instruct measured
LMArena Text: English	Not measured	1218	Only Llama 3.1 8B Instruct measured
LMArena Text: non-English	Not measured	1148	Only Llama 3.1 8B Instruct measured
LMArena Text: Chinese	Not measured	1151	Only Llama 3.1 8B Instruct measured
LMArena Text: German	Not measured	1144	Only Llama 3.1 8B Instruct measured
LMArena Text: Japanese	Not measured	1061	Only Llama 3.1 8B Instruct measured
LMArena Text: Korean	Not measured	1053	Only Llama 3.1 8B Instruct measured
LMArena Text: French	Not measured	1178	Only Llama 3.1 8B Instruct measured
LMArena Text: Spanish	Not measured	1169	Only Llama 3.1 8B Instruct measured
LMArena Text: Russian	Not measured	1158	Only Llama 3.1 8B Instruct measured
LMArena Text: multi-turn	Not measured	1172	Only Llama 3.1 8B Instruct measured
LMArena Text: longer queries	Not measured	1181	Only Llama 3.1 8B Instruct measured
LMArena Text: writing and language	Not measured	1162	Only Llama 3.1 8B Instruct measured
LMArena Text: entertainment and media	Not measured	1145	Only Llama 3.1 8B Instruct measured
Neither model has a result on the other 23 boards here

Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared

Image generation benchmarks for Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Benchmark	Gemini 2.5 Flash Lite	Llama 3.1 8B Instruct	Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Gemini 2.5 Flash Lite$0.0003Fits in one request

Llama 3.1 8B Instruct$0.0001Fits in one request

Llama 3.1 8B Instruct costs less

Repository review

50K input + 3K output tokens

Gemini 2.5 Flash Lite$0.0062Fits in one request

Llama 3.1 8B Instruct$0.0027Fits in one request

Llama 3.1 8B Instruct costs less

Agent loop

200K input + 10K output tokens

Gemini 2.5 Flash Lite$0.024Fits in one request

Llama 3.1 8B Instruct$0.011Exceeds the context window

Llama 3.1 8B Instruct costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Gemini 2.5 Flash Lite and Llama 3.1 8B Instruct
Specification	Google Gemini 2.5 Flash Lite	Meta Llama 3.1 8B Instruct
Maker	Google	Meta Llama
Weights	No public weights listed	Open weights
Released	July 22, 2025	July 23, 2024
Context window	1.05M	131K
Input $/Mtok	$0.10	$0.05
Output $/Mtok	$0.40	$0.08
Coding index	Not benchmarked	Not benchmarked
Independent measurements behind it	0	0
Cost per solved task	Not computable	Not computable
Source	OpenRouter listing	OpenRouter listing

Questions

Is Gemini 2.5 Flash Lite better than Llama 3.1 8B Instruct for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Gemini 2.5 Flash Lite for a larger context window (1.05M against 131K tokens).

Which is cheaper, Gemini 2.5 Flash Lite or Llama 3.1 8B Instruct?

Gemini 2.5 Flash Lite costs $0.10 per million input tokens and $0.40 per million output tokens; Llama 3.1 8B Instruct costs $0.05 and $0.08. Cost per solved task is known for neither of them.

Which has the bigger context window, Gemini 2.5 Flash Lite or Llama 3.1 8B Instruct?

Gemini 2.5 Flash Lite, with 1.05M tokens against 131K.

How many benchmarks is the Gemini 2.5 Flash Lite vs Llama 3.1 8B Instruct comparison based on?

15 benchmarks have a result for both models as of October 21, 2026. Gemini 2.5 Flash Lite's coding index rests on 0 independent benchmarks and Llama 3.1 8B Instruct's on 0. Where only one model has a result, the page says so instead of naming a winner.

Gemini 2.5 Flash Lite or Llama 3.1 8B Instruct: which to pick

Which one for your work

Coding

Intelligence

Reasoning

Math

Knowledge

Long documents

Everyday cost

At a glance

Benchmark by benchmark

What each workload costs

Chat turn

Repository review

Agent loop

Specification differences

Questions

Compare next