vs
0:0
overall capability wins (1 ties across 1 scored). Price/speed category wins do not decide overall. Tied overall.
- Pricing3:0
Verdict
Mercury 2 is ~8.0x cheaper on a blended token basis than Reka Core.
Cost for 1M in + 250K out
Illustrative chat workload at primary-provider list prices.
- Mercury 2
- $0.44
- Reka Core
- $3.50
Mercury 2 is about 8.0x cheaper on this workload.
Price per 1M tokens
Full comparison
Organization
Inception Labs
Reka
Family
Other
Other
License
Proprietary
Proprietary
Open weights
No
No
Release
Sep 1, 2026
Apr 15, 2024
Knowledge cutoff
-
-
API / provider
Inception Labs
Reka
Modalities
text → text
text, image, video → text
Specs
Context window
128K
128K
Max output
-
4K
Parameters
—
—
Pricing
Input $/1M
$0.25
$2
Output $/1M
$0.75
$6
Blended $/1M (3∶1)
$0.38
$3
Speed
tok/s
-
70
TTFT (s)
-
0.5
Reasoning
MMLU-Pro
—
—
GPQA Diamond
77.0
—
Humanity's Last Exam
17.1
—
AIME 2025
—
—
MATH-500
—
—
Humanity's Last Exam (with tools)
—
—
AA-Omniscience Accuracy
21.2
—
AA-LCR v1.1
43.7
—
CritPt
0.8
—
MMMU-Pro
—
—
IFBench
69.8
—
Chartography
—
—
Chartography (With Tools)
—
—
Coding
SWE-bench Verified
—
—
SWE-bench Pro
—
—
SWE-bench Multilingual
—
—
LiveCodeBench
—
—
Terminal-Bench 2.1
27.3
—
Aider Polyglot
—
—
Terminal-Bench 3
—
—
BigCodeBench
—
—
SciCode
37.7
—
CursorBench
—
—
SWE-Rebench
—
—
NL2Repo-Bench
—
—
DeepSWE
—
—
WebDev Arena
1,167
—
Terminal-Bench 4.0
—
—
CursorBench 4.0
—
—
FrontierCode v1.1 (Main)
—
—
Arena
LMArena Elo
—
1,288
| Metric | Mercury 2 | Reka Core | Delta |
|---|---|---|---|
| Identity | |||
| Organization | Inception Labs | Reka | — |
| Family | Other | Other | — |
| License | Proprietary | Proprietary | — |
| Open weights | No | No | — |
| Release | Sep 1, 2026 | Apr 15, 2024 | — |
| Knowledge cutoff | - | - | — |
| API / provider | Inception Labs | Reka | — |
| Modalities | text → text | text, image, video → text | — |
| Specs | |||
| Context window | 128K | 128K | tie |
| Max output | - | 4K | — |
| Parameters | — | — | — |
| Pricing | |||
| Input $/1M | $0.25 | $2 | A +$1.75 |
| Output $/1M | $0.75 | $6 | A +$5.25 |
| Blended $/1M (3∶1) | $0.38 | $3 | A +$2.63 |
| Speed | |||
| tok/s | - | 70 | — |
| TTFT (s) | - | 0.5 | — |
| Reasoning | |||
| MMLU-Pro | — | — | — |
| GPQA Diamond | 77.0 | — | — |
| Humanity's Last Exam | 17.1 | — | — |
| AIME 2025 | — | — | — |
| MATH-500 | — | — | — |
| Humanity's Last Exam (with tools) | — | — | — |
| AA-Omniscience Accuracy | 21.2 | — | — |
| AA-LCR v1.1 | 43.7 | — | — |
| CritPt | 0.8 | — | — |
| MMMU-Pro | — | — | — |
| IFBench | 69.8 | — | — |
| Chartography | — | — | — |
| Chartography (With Tools) | — | — | — |
| Coding | |||
| SWE-bench Verified | — | — | — |
| SWE-bench Pro | — | — | — |
| SWE-bench Multilingual | — | — | — |
| LiveCodeBench | — | — | — |
| Terminal-Bench 2.1 | 27.3 | — | — |
| Aider Polyglot | — | — | — |
| Terminal-Bench 3 | — | — | — |
| BigCodeBench | — | — | — |
| SciCode | 37.7 | — | — |
| CursorBench | — | — | — |
| SWE-Rebench | — | — | — |
| NL2Repo-Bench | — | — | — |
| DeepSWE | — | — | — |
| WebDev Arena | 1,167 | — | — |
| Terminal-Bench 4.0 | — | — | — |
| CursorBench 4.0 | — | — | — |
| FrontierCode v1.1 (Main) | — | — | — |
| Arena | |||
| LMArena Elo | — | 1,288 | — |
Mercury 2
- Context
- 128K
- Parameters
- —
- Price
- $0.25 / $0.75
- Speed
- —
- Modalities
- text → text
- License
- Proprietary
Inception Labs' diffusion-based (non-autoregressive) reasoning LLM, API-only with a 128K context window and high-throughput inference on Blackwell GPUs.
Reka Core
- Context
- 128K / 4K out
- Parameters
- —
- Price
- $2 / $6
- Speed
- 70 tok/s · 0.5s TTFT
- Modalities
- text, image, video → text
- License
- Proprietary
Reka flagship multimodal model for complex reasoning over mixed media inputs.
Benchmark charts
Winner bars are emphasized. Per-benchmark deltas sit above each chart.
These two models have no overlapping published benchmarks in our dataset. Compare specs and pricing instead.