Llama 3.1 8B Instruct vs Mixtral 8x22B Instruct
Updated October 21, 2026. 7 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
Decision reading
Neither model has a coding score yet, so the two cannot be ranked on coding.
Llama 3.1 8B Instruct has the edge where output tokens cost 75.0x less, and where the context window is larger, 131K against 66K tokens.
- Shared results
- 7
- Llama 3.1 8B Instruct only
- 43
- Mixtral 8x22B Instruct only
- 0
- Like-for-like categories
- 5 of 9
Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.
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
Llama 3.1 8B Instruct
Llama 3.1 8B Instruct leads, 6.9 against 5.7.
Same board, both measured
Long documents
Listed context window
Llama 3.1 8B Instruct
Llama 3.1 8B Instruct takes 131K tokens against 66K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Llama 3.1 8B Instruct
Llama 3.1 8B Instruct $0.0001, Mixtral 8x22B Instruct $0.0050 per turn.
List prices
At a glance
- Coding index
- Llama 3.1 8B Instruct not benchmarked, Mixtral 8x22B Instruct not benchmarked.
- Widest category
- Knowledge, 6.1 points apart on average over 1 shared benchmark.
- Widest single gap
- GPQA Diamond (Artificial Analysis run): Llama 3.1 8B Instruct 25.9% against Mixtral 8x22B Instruct 33.2%, 7.3 points apart on a 0 to 100 scale.
- Output price
- Llama 3.1 8B Instruct $0.08 against Mixtral 8x22B Instruct $6.00 per million output tokens, 75.0x apart.
- Context window
- Llama 3.1 8B Instruct takes 131K tokens, Mixtral 8x22B Instruct 66K.
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.
| Category | Llama 3.1 8B Instruct | Bars | Mixtral 8x22B Instruct | Ties |
|---|---|---|---|---|
| Coding | 0 | 1 | ||
| Intelligence | 1 | 1 | ||
| Reasoning | 1 | 1 | ||
| Knowledge | 0 | 1 | ||
| General | 0 | 1 | ||
| All shared boards | 2 | 5 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index01
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B Instruct | Leader |
|---|---|---|---|
| AA Coding Index | 5.4 | Not measured | Only Llama 3.1 8B Instruct measured |
| LiveCodeBench (Artificial Analysis run) | 11.6% | 14.8% | Mixtral 8x22B Instruct |
| Terminal-Bench Hard (Artificial Analysis run) | 0.8% | Not measured | Only Llama 3.1 8B Instruct measured |
| WeirdML | 1.7% | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: coding | 1195 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: software and IT | 1195 | Not measured | 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 index11
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B Instruct | Leader |
|---|---|---|---|
| AA Intelligence Index | 6.9 | 5.7 | Llama 3.1 8B Instruct |
| Epoch Capabilities Index | 116.5 | 122.0 | Mixtral 8x22B Instruct |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B Instruct | Leader |
|---|---|---|---|
| τ²-Bench Telecom | 16.4% | Not measured | Only Llama 3.1 8B Instruct measured |
| BALROG | 15.1% | Not measured | Only Llama 3.1 8B Instruct measured |
| Neither model has a result on the other 37 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index11
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B Instruct | Leader |
|---|---|---|---|
| GPQA Diamond (Artificial Analysis run) | 25.9% | 33.2% | Mixtral 8x22B Instruct |
| Humanity's Last Exam (Artificial Analysis run) | 5.3% | 4.0% | Llama 3.1 8B Instruct |
| GPQA Diamond (Epoch AI run) | 27.0% | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: hard prompts | 1175 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: expert | 1144 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: hard prompts in English | 1196 | Not measured | Only Llama 3.1 8B Instruct measured |
| Neither model has a result on the other 15 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index7 boards, none shared
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B Instruct | Leader |
|---|---|---|---|
| AA Math Index | 4.3 | Not measured | Only Llama 3.1 8B Instruct measured |
| AIME 2025 (Artificial Analysis run) | 4.3% | Not measured | Only Llama 3.1 8B Instruct measured |
| OTIS Mock AIME | 1.7% | Not measured | Only Llama 3.1 8B Instruct measured |
| MATH level 5 | 22.9% | Not measured | Only Llama 3.1 8B Instruct measured |
| GSM8K | 82.4% | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: math | 1179 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: mathematical work | 1180 | Not measured | Only Llama 3.1 8B Instruct measured |
| Neither model has a result on the other 6 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B Instruct | Leader |
|---|---|---|---|
| MMLU Pro (Artificial Analysis run) | 47.6% | 53.7% | Mixtral 8x22B Instruct |
| MMLU | 56.1% | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: science | 1193 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: medicine and healthcare | 1182 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: legal and government | 1206 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: business and finance | 1166 | Not measured | Only Llama 3.1 8B Instruct measured |
| Neither model has a result on the other 11 boards here | |||
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B Instruct | Leader |
|---|---|---|---|
| Neither model has a result on 9 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B Instruct | Leader |
|---|---|---|---|
| IFBench | 28.6% | Not measured | Only Llama 3.1 8B Instruct measured |
| Long context reasoning (AA-LCR) | 18.0% | Not measured | Only Llama 3.1 8B Instruct measured |
| DTBench | 50.9% | 55.1% | Mixtral 8x22B Instruct |
| LMCA | 5.4% | Not measured | Only Llama 3.1 8B Instruct measured |
| PIQA | 81.2% | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text | 1187 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: instruction following | 1159 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: creative writing | 1154 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: English | 1218 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: non-English | 1148 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: Chinese | 1151 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: German | 1144 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: Japanese | 1061 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: Korean | 1053 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: French | 1178 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: Spanish | 1169 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: Russian | 1158 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: multi-turn | 1172 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: longer queries | 1181 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: writing and language | 1162 | Not measured | Only Llama 3.1 8B Instruct measured |
| LMArena Text: entertainment and media | 1145 | Not measured | Only Llama 3.1 8B Instruct measured |
| Neither model has a result on the other 25 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Llama 3.1 8B Instruct | Mixtral 8x22B 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
Llama 3.1 8B Instruct costs less
Repository review
50K input + 3K output tokens
Llama 3.1 8B Instruct costs less
Agent loop
200K input + 10K output tokens
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.
| Specification | Meta Llama 3.1 8B Instruct | Mistral Mixtral 8x22B Instruct |
|---|---|---|
| Maker | Meta Llama | Mistral AI |
| Weights | Open weights | Open weights |
| Released | July 23, 2024 | April 17, 2024 |
| Context window | 131K | 66K |
| Input $/Mtok | $0.05 | $2.00 |
| Output $/Mtok | $0.08 | $6.00 |
| 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 Llama 3.1 8B Instruct better than Mixtral 8x22B Instruct for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Llama 3.1 8B Instruct has the edge where output tokens cost 75.0x less, and where the context window is larger, 131K against 66K tokens.
Which is cheaper, Llama 3.1 8B Instruct or Mixtral 8x22B Instruct?
Llama 3.1 8B Instruct costs $0.05 per million input tokens and $0.08 per million output tokens; Mixtral 8x22B Instruct costs $2.00 and $6.00. Cost per solved task is known for neither of them.
Which has the bigger context window, Llama 3.1 8B Instruct or Mixtral 8x22B Instruct?
Llama 3.1 8B Instruct, with 131K tokens against 66K.
How many benchmarks is the Llama 3.1 8B Instruct vs Mixtral 8x22B Instruct comparison based on?
7 benchmarks have a result for both models as of October 21, 2026. Llama 3.1 8B Instruct's coding index rests on 0 independent benchmarks and Mixtral 8x22B Instruct's on 0. Where only one model has a result, the page says so instead of naming a winner.