Agentic
Not comparable- Grok Code Fast 1
- Not measured
- LFM2.5-1.2B-Thinking
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Model comparison
Grok Code Fast 1 vs LFM2.5-1.2B-Thinking
Updated July 28, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.
The public evidence has no benchmark result shared by both models, so it does not support a quality verdict. Use the documented cost, context, and runtime rows instead.
0 results are shared. Category rows based on different benchmark sets are marked directional and do not name a winner.
Which one for your work
Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.
Long documents
Prompts that approach the documented context limit
Grok Code Fast 1
Grok Code Fast 1 has the larger documented context window.
Confidence: documented
Show secondary and unsupported calls
Coding work
Code generation, repair, and software-engineering tasks
Not enough matched evidence
No shared weighted benchmark basis supports a winner.
Confidence: limited
Agentic work
Tool use, computer use, and multi-step task completion
Not enough matched evidence
No shared weighted benchmark basis supports a winner.
Confidence: limited
Chat turn cost
1K fresh input + 500 output tokens
Not enough matched evidence
A complete comparable API-rate estimate is not available for both models.
Confidence: listed-rates
Cache-heavy agent loop cost
200K cached + 20K fresh input + 10K output tokens
Not enough matched evidence
The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. LFM2.5-1.2B-Thinking does not fit this workload in one request. Grok Code Fast 1 has no published cached-input rate, so cached tokens use its listed input rate. LFM2.5-1.2B-Thinking has no comparable published API token rate.
Confidence: rate-fallback
Repository review cost
50K fresh input + 3K output tokens
Not enough matched evidence
The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. LFM2.5-1.2B-Thinking does not fit this workload in one request. LFM2.5-1.2B-Thinking has no comparable published API token rate.
Confidence: listed-rates
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
1 Grok Code Fast 1 only
- Shared results
- 0
- Grok Code Fast 1 only
- 1
- LFM2.5-1.2B-Thinking only
- 0
- Like-for-like categories
- 0 / 8
Category results, on a stated basis
Each row states whether both averages use the same weighted benchmark set. Directional and not-comparable rows remain visible, but they never receive a winner in this template.
Coding
Not comparable- Grok Code Fast 1
- 70.8
- LFM2.5-1.2B-Thinking
- Not measured
- Weighted basis
- 1 vs 0 rows
- Reading
- Not comparable
Reasoning
Not comparable- Grok Code Fast 1
- Not measured
- LFM2.5-1.2B-Thinking
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Knowledge
Not comparable- Grok Code Fast 1
- Not measured
- LFM2.5-1.2B-Thinking
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Math
Not comparable- Grok Code Fast 1
- Not measured
- LFM2.5-1.2B-Thinking
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Multilingual
Not comparable- Grok Code Fast 1
- Not measured
- LFM2.5-1.2B-Thinking
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Multimodal
Not comparable- Grok Code Fast 1
- Not measured
- LFM2.5-1.2B-Thinking
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Instruction following
Not comparable- Grok Code Fast 1
- Not measured
- LFM2.5-1.2B-Thinking
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
| Category | Grok Code Fast 1 | LFM2.5-1.2B-Thinking | Weighted basis | Reading |
|---|---|---|---|---|
| Agentic | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Coding | 70.8 | Not measured | Not comparable1 vs 0 rows | Not comparable |
| Reasoning | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Knowledge | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Math | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Multilingual | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Multimodal | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Instruction following | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
Shape of the matched evidence
Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.
A shared-evidence shape is not available.
BenchLM does not draw a radar or infer missing axes when the matched evidence is too sparse.
What each workload costs
Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.
Chat turn
1K fresh input + 500 output tokens
- Grok Code Fast 1
- $0.00095
- Fits in one request
- LFM2.5-1.2B-Thinking
- No hosted API token rate
- Fits in one request
LFM2.5-1.2B-Thinking has no comparable published API token rate.
Repository review
50K fresh input + 3K output tokens
- Grok Code Fast 1
- $0.0145
- Fits in one request
- LFM2.5-1.2B-Thinking
- No hosted API token rate
- Does not fit in one request
LFM2.5-1.2B-Thinking does not fit this workload in one request. LFM2.5-1.2B-Thinking has no comparable published API token rate.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- Grok Code Fast 1
- $0.059
- Fits in one request
- Cached input priced at the published list-input rate
- LFM2.5-1.2B-Thinking
- No hosted API token rate
- Does not fit in one request
- Cached-input rate unavailable
LFM2.5-1.2B-Thinking does not fit this workload in one request. Grok Code Fast 1 has no published cached-input rate, so cached tokens use its listed input rate. LFM2.5-1.2B-Thinking has no comparable published API token rate.
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationGrok Code Fast 1LFM2.5-1.2B-Thinking
Context window
Maximum documented context; output-token limits may be lower.
Grok Code Fast 1
256K
LFM2.5-1.2B-Thinking
32K
API model ID
Grok Code Fast 1
Not sourced
LFM2.5-1.2B-Thinking
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Grok Code Fast 1
Not published
LFM2.5-1.2B-Thinking
No comparable hosted API rate
Documented inputs
Grok Code Fast 1
Not sourced
LFM2.5-1.2B-Thinking
Not sourced
Documented outputs
Grok Code Fast 1
Not sourced
LFM2.5-1.2B-Thinking
Not sourced
Provider availability
Grok Code Fast 1
Not sourced
LFM2.5-1.2B-Thinking
Not sourced
Reasoning profile
Grok Code Fast 1
Non-Reasoning
LFM2.5-1.2B-Thinking
Reasoning
Weight access
Grok Code Fast 1
Proprietary
LFM2.5-1.2B-Thinking
Proprietary
License
Grok Code Fast 1
Proprietary
LFM2.5-1.2B-Thinking
Proprietary
Release date
Grok Code Fast 1
2025-08-28
LFM2.5-1.2B-Thinking
2026-03-01
If you already use one of these models
- Deployment change
- The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
- Quality signal
- The public evidence has no benchmark result shared by both models, so it does not support a quality verdict.
- Workload cost
- A complete comparable API-rate estimate is not available for both models.
- Context tradeoff
- Grok Code Fast 1 has the larger documented window (256K).
Run the same representative tasks against both endpoints before changing production traffic.
Benchmark evidence
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Browse raw public benchmark evidence1 rows
Coding
SWE-bench Verified
Grok Code Fast 170.8%SourceLFM2.5-1.2B-Thinking—Not directly comparable
Frequently asked questions
Which is better, Grok Code Fast 1 or LFM2.5-1.2B-Thinking?
The public evidence has no benchmark result shared by both models, so it does not support a quality verdict. The page therefore keeps the decision tied to the specific documented workload.
Which is better for coding, Grok Code Fast 1 or LFM2.5-1.2B-Thinking?
The published evidence does not provide a shared weighted coding basis for both models, so BenchLM does not name a coding winner.
Which is better for agentic tasks, Grok Code Fast 1 or LFM2.5-1.2B-Thinking?
The published evidence does not provide a shared weighted agentic tasks basis for both models, so BenchLM does not name a agentic tasks winner.
Which costs less, Grok Code Fast 1 or LFM2.5-1.2B-Thinking?
Both models do not have comparable published API token rates, so this page does not name a universal price winner.
Which has the larger context window, Grok Code Fast 1 or LFM2.5-1.2B-Thinking?
Grok Code Fast 1 has the larger documented context window: 256K, compared with 32K.
Related comparisons
Last updated July 28, 2026
Keep the decision current
One weekly note on benchmark changes, pricing moves, and models worth re-testing.